CN112227755A - Waterproof repairing structure and method for old roof - Google Patents
Waterproof repairing structure and method for old roof Download PDFInfo
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- CN112227755A CN112227755A CN202010916921.8A CN202010916921A CN112227755A CN 112227755 A CN112227755 A CN 112227755A CN 202010916921 A CN202010916921 A CN 202010916921A CN 112227755 A CN112227755 A CN 112227755A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0281—Repairing or restoring roofing or roof covering
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
- E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention belongs to the technical field of building waterproofing, and provides a method for repairing old roof waterproofing, which comprises the following steps: chiseling the defects of the old roof and repairing holes with plain cement; leveling the defect position by using self-leveling cement paste to form an old roof leveling layer; cleaning the separation seams, and filling the bottoms of the separation seams with caulking paste; the waterproof adhesive tape is laid along the separation seams; coating a base layer treating agent on the old roof; painting waterproof paint on the old roof and the separation seam and synchronously paving waterproof coiled materials; and laying reflection-type aluminum film self-adhesive coiled materials on the old roof and the separation seams. The method for repairing the old roof by water proofing does not damage the original roof structure layer, reduces the load of the roof by subtracting the traditional concrete protective layer, has excellent water-proof and leakage-stopping effects, and has the advantages of simple and convenient construction and low cost. The invention also provides a waterproof repairing structure for the old roof.
Description
Technical Field
The invention relates to the technical field of building waterproofing, in particular to a waterproof repairing structure and method for an old roof.
Background
The old roof of the factory building is a large-span factory building in an industrial building, the building has large span, more structures such as expansion joints, separation joints, flues, pipelines and the like exist in the construction process, and because the old roof of the factory building has large span and more devices are added in the subsequent reconstruction, the roof is easy to deform, and the selection of a waterproof structure is more rigorous. Compared with an indoor structure, the roof is exposed and influenced by sunshine, rain and rain, the seepage-proofing effect of the old roof of the factory building is gradually deteriorated, and the old roof of the factory building needs to be repaired in a waterproof way.
Most of the existing waterproof repair work needs to excavate and repair the whole ground, so that the cost is high on one hand, the integrity of a building can be influenced due to vibration in the excavation process, the structural layer of the building can be damaged, the construction time is long, and great loss can be caused indoors in winter and rain in the construction process. The overall excavation and repair mode is not suitable for old buildings such as old workshops and the like, once the old buildings are repaired poorly, irreversible damage is easily caused, and great loss is caused to the property of personnel, so that the original structure cannot be damaged, and the load of the buildings is not increased.
The Chinese patent 'construction method for repairing leakage of waterproof coiled material roof' (application number: 201010525215.7) discloses a construction method for repairing leakage of waterproof coiled material roof, which comprises the steps of base layer treatment, detail repair, large-area repair and the like. Wherein the detailed repair comprises the repair of cracking of the gutter and the cornice coiled material, the repair of the flashing part and the repair of a deformation joint; the large-area repairing comprises the steps of paving and pasting waterproof coiled materials, repairing cracks of a waterproof layer of the coiled materials, repairing opening and edge warping of seams, repairing bulging and the like. The whole repairing scheme has the advantages of scientific design, reasonable system, comprehensive investigation, rigorous analysis, feasible scheme, capability of effectively repairing the leakage of the house and better construction effect.
However, the method can damage the original roof structure and is not suitable for waterproof repair of old roofs and other buildings.
Therefore, a method for performing waterproof repair on an old roof without damaging the structural layer of the building is needed.
Disclosure of Invention
The invention aims to overcome at least one defect (deficiency) of the prior art and provides a method for repairing the old roof by water resistance, which achieves excellent water-proof and leakage-stopping effects and small load on the roof under the condition of not damaging the original roof.
The invention also aims to provide a waterproof repairing structure for the old roof.
The invention adopts the technical scheme that the method for repairing the water-proof old roof is characterized in that the old roof is provided with a separation seam, and comprises the following steps
The following steps:
s1: chiseling the defects of the old roof and repairing holes with plain cement;
s2: leveling the defect position by using self-leveling cement paste to form an old roof leveling layer;
s3: coating a base layer treating agent on the leveling layer and the old roof not covered by the leveling layer to form a base layer treating layer;
s4: coating waterproof paint on the base layer treatment layer and the separation seams and synchronously paving waterproof rolls;
s5: and laying a reflection-type aluminum film self-adhesive coiled material on the surface of the waterproof coiled material.
In the invention, the defects refer to the places of the old roof, such as loose, honeycomb pitted surface, mortar surface layer and the like; chiseling the defective part, and repairing the hole by using the plain cement so as to better fuse the defective part with the original defective part; self-leveling cement paste is used for leveling the defects, so that the surface is kept flat, and the subsequent construction can achieve a better effect; the base layer treating agent can remove dust on the leveling layer, keep the base surface clean and facilitate the construction of subsequent waterproof coatings; waterproof paint is coated and waterproof coiled materials are laid synchronously, so that the overall waterproof effect is improved; laying reflection-type aluminum film self-adhesive coiled material, reflecting ultraviolet ray, and playing the role of protective layer.
Further, step S4 is preceded by: cleaning the separation seams, and filling the bottoms of the separation seams with caulking paste.
The caulking paste is filled in the separation seams, so that even if the upper layer is damaged, the situation of leakage through the separation seams can be effectively prevented.
Further, a waterproof adhesive tape is attached to the separation seam.
The waterproof adhesive tape can be a butyl waterproof adhesive tape, can adapt to deformation of the separation seams and has a good protection effect on the separation seams.
Further, the specific laminating process of the waterproof adhesive tape is as follows: the waterproof adhesive tape is laid from one end of the old roof, extends to one side wall surface of the separation seam, the surface of the caulking paste, the other side wall surface of the separation seam and then reaches the other end of the old roof, and is in a U-shaped structure; the two ends of the waterproof adhesive tape are connected with the base layer treatment layer and are as high as the base layer treatment layer. The waterproof adhesive tape is laid not only in the separation seam, but also extends to the surfaces of the old roofs on the two sides of the separation seam, and the two ends of the butyl waterproof adhesive tape are arranged on the surfaces of the old roofs and have a better attaching effect with the old roofs and the separation seam, so that the butyl waterproof adhesive tape can better adapt to the deformation caused by expansion with heat and contraction with cold, and a better waterproof effect is ensured.
Further, the step S3 of coating the base layer treating agent includes: and (3) brushing twice, brushing a first base layer treating agent on the leveling layer and the old roof not covered with the leveling layer, rolling and coating once along the same direction, brushing a second base layer treating agent after surface drying, and rolling and coating once along the vertical direction. The base layer treating agent is a water-based base layer treating agent for KS-302 asphalt-based coiled materials and is prepared from high-molecular polymer modified emulsified asphalt, and the two times of base layer treating agents are transversely and longitudinally cross-coated to ensure that the base surface is coated with the water-based base layer treating agent.
Further, in the step S4, the waterproof coating is a KS-520 creep type non-cured asphalt waterproof coating with a thickness of 2mm, and the waterproof roll is a PE film SBS modified asphalt waterproof roll with a thickness of 4 mm. The creep type non-cured asphalt waterproof coating has good flexibility and can better adapt to structural deformation. The construction process of the creep asphalt waterproof coating composite SBS modified asphalt waterproof coiled material comprises the following steps: heating creep type asphalt waterproof coating, placing into a spraying machine, adjusting flow rate of the spraying machine to ensure that the thickness of the sprayed coating is a certain thickness, for example 2mm is an optimal thickness value determined by experiments, and the thickness of the coating is 2.3kg/m2And spraying and paving the SBS modified asphalt waterproof coiled material at the same time, rolling and compacting, and closing the lap joint of the coiled material by a hot melting method. This composite constructionThe method is favorable for the coating layer in direct contact with the base surface to be capable of automatically and perfectly adapting to structural deformation, creep repair can be carried out according to the expansion and contraction of the base surface, and the stress of the base layer is not reflected to the waterproof roll material layer, so that the waterproof layer can be lasting and effective under the condition that the structural main body does not displace in a large range, and the hidden danger of leakage is avoided in the true sense.
Further, before the step S4, the old roof treated by the base layer treating agent needs to be subjected to a drying test, and the water content is less than 9%. The tax rate exceeding 10% will affect the subsequent waterproof effect, and is not good for the subsequent use of the waterproof layer.
Further, in step S2, the self-leveling cement slurry comprises: mixing ordinary silica cement, high-alumina cement and portland cement, and adding surfactant and dispersed latex powder.
Further, the caulking compound is prepared by mixing rubber particles with a polyurethane sealant 1: 1, and preparing the composition.
Furthermore, the polyurethane sealant consists of polyurethane prepolymer containing isocyanate group, curing agent containing polyhydroxy group, reinforcing agent and tackifier. The polyurethane sealant has the advantages of durability, structural deformation adaptability, expansion with heat and contraction with cold and the like.
The waterproof repairing structure of the old roof of the workshop, which is obtained by the waterproof repairing method of the old roof, comprises a leveling layer, a base layer treating agent layer, a first waterproof coating layer, a first waterproof coil material layer and a first reflection type aluminum film self-adhesive coil material layer which are sequentially paved on the old roof, and a caulking paste layer, a waterproof adhesive tape layer, a second waterproof coating layer, a second waterproof coil material layer and a second reflection type aluminum film self-adhesive coil material layer which are sequentially paved on a separation seam; the base course treating agent layer is connected with the waterproof adhesive tape layer and is at the same height, the first waterproof coating layer is connected with the second waterproof coating layer and is at the same height, the first waterproof roll material layer is connected with the second waterproof roll material layer and is at the same height, and the first reflection type aluminum film self-adhesive roll material layer is connected with the second reflection type aluminum film self-adhesive roll material layer and is at the same height. A separation seam is reserved between the structural base layers on the old roof to adapt to deformation caused by expansion with heat and contraction with cold; when the waterproof repair is carried out, the defects on the old roof are repaired, and the waterproof repair of the dividing seams is also needed, so that the defects on the old roof and the repair structure of the dividing seams form a whole, and the waterproof leak stoppage can be better carried out.
Further, the thickness of the leveling layer is 3-8 mm, the basic unit processing layer is 500 μm, the first waterproof coating layer and the second waterproof coating layer are 2mm, the first waterproof roll layer and the second waterproof roll layer are 4mm, the first reflection type aluminum film self-adhesive roll layer and the second reflection type aluminum film self-adhesive roll layer are 2mm, and the caulking paste layer is 20 mm.
The method for performing waterproof repair on the old roof does not need to damage the structure layer of the old roof, and the defect part is chiseled and repaired. Re-caulking the original separation seams, paving a butyl waterproof adhesive tape on the surface layer, and reserving the deformation width; the KS-302 asphalt base coiled material aqueous base layer treating agent is coated on the whole old roof base layer twice and is used as the base layer treating agent before construction, so that the bonding property of a waterproof material and the base layer is improved, and the effects of sealing pores of a mortar base layer and blocking water vapor permeation are achieved; waterproof paint is coated on the old roof and the separation seams and waterproof rolls are laid synchronously, the paint layer in direct contact with the base surface can automatically and perfectly adapt to structural deformation, creep deformation repair can be carried out according to the expansion and contraction of the base surface, and the stress of the base layer is not reflected to the waterproof roll layer, so that the waterproof layer can be effective and lasting under the condition that the structure main body does not displace in a large range, and the hidden danger of leakage is avoided in the true sense. And finally, paving and pasting the reflection-type aluminum film self-adhesive coiled material as a protective layer, ensuring that the SBS waterproof coiled material is in direct contact with sunlight through the reflection effect of the aluminum film, and reducing the surface problem through reflection, so that the effect of the protective layer can be achieved after construction is completed, and the load of the surface is not increased.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method for repairing the old roof by water proofing does not damage the original roof structure layer, reduces the load of the roof by subtracting the traditional concrete protective layer, has excellent water-proof and leakage-stopping effects, and has simple and convenient construction and low cost;
(2) the invention carries out waterproof repair on the old roof, the first layer of base layer in the waterproof structure adopts the KS-302 asphalt-based roll material aqueous base layer treating agent, and the base layer treating agent can improve the bonding property of the roll material and the base layer and has the functions of sealing the capillary holes of the mortar base layer and blocking the water vapor permeation.
(3) The waterproof coating composite waterproof coiled material is used for forming a second waterproof layer, wherein the coating is creep-type asphalt waterproof coating, a whole full-paved waterproof layer is formed by the coating and a base surface, the coiled material is a SBS modified asphalt waterproof coiled material with the thickness of 4mm, the waterproof system is very light, the coating layer in direct contact with the base surface can automatically and perfectly adapt to structural deformation, creep restoration can be carried out according to expansion and contraction of the base surface, and the stress of the base layer is not reflected into the waterproof coiled material layer, so that the waterproof layer can be lasting and effective under the condition that a structural main body does not displace in a large range, and the hidden danger of leakage is really avoided.
(4) The invention uses the reflection type aluminum film self-adhesive coiled material to form a third protective layer, wherein the coiled material is an APF-405 aluminum film self-adhesive polymer modified asphalt waterproof coiled material, the SBS waterproof coiled material is ensured to be directly contacted with sunlight through the reflection effect of the aluminum film, the surface problem is reduced through reflection, the construction can play a role of the protective layer, and the surface load is not increased.
Drawings
Fig. 1 is a sectional surface of a waterproof repairing structure of an old roof.
In the drawings are labeled: 1-caulking plaster layer, 2-parting joint, 3-reflection type aluminum film self-adhesive coil material layer, 4-waterproof coil material layer, 5-waterproof coating layer, 6-waterproof adhesive tape layer, 7-leveling layer, 8-base layer treating agent layer and 9-old roof.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
A method for repairing the water-proof of an old roof, which is provided with a separating seam, comprises the following steps:
s1: chiseling the defects of the old roof and repairing holes with plain cement;
s2: leveling the defect position by using self-leveling cement paste to form an old roof leveling layer;
s3: coating a base layer treating agent on the leveling layer and the old roof not covered by the leveling layer to form a base layer treating layer;
s4: coating waterproof paint on the base layer treatment layer and the separation seams and synchronously paving waterproof rolls;
s5: and laying a reflection-type aluminum film self-adhesive coiled material on the surface of the waterproof coiled material.
In this embodiment, the defects refer to the loose, honeycomb pitted surface, mortar surface layer and other places of the old roof; chiseling the defect part, cleaning, and repairing the hole by using the plain cement so as to better fuse with the original defect part; leveling the defect position by using self-leveling cement paste, keeping the surface flat and facilitating subsequent construction to achieve better effect; the self-leveling cement paste can be used for leveling the defect, the self-leveling cement paste can be used for leveling the old roof except the defect, and the hollow on the old roof is filled, so that the defect and the surface of the old roof except the defect can be kept flat and the same height is kept, and the subsequent construction is facilitated; the base layer treating agent can remove dust on the leveling layer, keep the base surface clean and facilitate the construction of subsequent waterproof coatings; waterproof paint is coated and waterproof coiled materials are laid synchronously, so that the overall waterproof effect is improved; laying reflection-type aluminum film self-adhesive coiled material, reflecting ultraviolet ray, and playing the role of protective layer.
The self-leveling cement paste is prepared by adding various surface active auxiliary agents and dispersed latex powder into ordinary silicon cement, high-alumina cement and portland cement.
In this embodiment, step S3 is preceded by: cleaning the separation seams, and filling the bottoms of the separation seams with caulking paste. This step may be performed before or after any of steps S1-S2. In order to better adapt to expansion caused by heat and contraction caused by cold, the old roofs are not a single whole, but a separation seam is arranged between two adjacent old roofs, and during construction, the separation seam is cleaned and caulking paste is filled before waterproof paint is coated and waterproof coiled materials are laid; the existence of the caulking paste can avoid the damage of accumulated water to the old roof through the separation seam when the upper structural layer leaks; the caulking compound may completely fill the separation gap or fill only the bottom portion, the filling thickness is usually determined according to the depth of the separation gap, and a filling thickness of 20mm is generally preferred.
The caulking paste is prepared from rubber particles and polyurethane sealant 1: 1, preparing; the polyurethane sealant consists of polyurethane prepolymer containing isocyanate group, curing agent containing polyhydroxy group, reinforcing agent and tackifier.
In this embodiment, after the caulking compound is filled in the separation gap, a waterproof tape is attached to the surface of the caulking compound. The waterproof adhesive tape is attached to the surface of the caulking paste, and can effectively prevent accumulated water from entering the caulking paste, so that the waterproof effect of the separation joint is further improved.
In this embodiment, the specific attaching process of the waterproof tape is as follows: the waterproof adhesive tape is laid from one end of the old roof, extends to one side wall surface of the separation seam, the surface of the caulking paste, the other side wall surface of the separation seam and then reaches the other end of the old roof, and is in a U-shaped structure; the two ends of the waterproof adhesive tape are connected with the base layer treatment layer and are as high as the base layer treatment layer. The waterproof adhesive tape is laid not only in the separation seam, but also extends to the surfaces of the old roofs on the two sides of the separation seam, and the two ends of the butyl waterproof adhesive tape are arranged on the surfaces of the old roofs and have a better attaching effect with the old roofs and the separation seam, so that the butyl waterproof adhesive tape can better adapt to the deformation caused by expansion with heat and contraction with cold, and a better waterproof effect is ensured.
In an embodiment, the step S3 of brushing the base layer treating agent includes: brushing at least twice, wherein the brushing sequence is as follows: and brushing a first base layer treating agent on the leveling layer and the old roof not covered with the leveling layer once along the same direction, and brushing a second base layer treating agent once along the vertical direction after the surface is dried. The base layer treating agent is prepared from high molecular polymer modified emulsified asphalt; the concrete construction process is as follows: the treatment and cleaning of the screed and the uncovered screed house of the old roof ensures that the hard, dust-free → open → shake → paint the first base treatment in the same direction and roll-coat once → after surface drying paint the second base treatment in the vertical direction and roll-coat once. The leveling layer and the old roof not covered by the leveling layer can be better coated by the base layer treating agent by adopting a cross coating mode, and the influence on the subsequent construction effect caused by the fact that the base layer treating agent is partially not coated can be avoided.
In this embodiment, before the step S4, the old roof treated by the base layer treating agent needs to be subjected to a drying test, and the water content is less than 9%. The old roof treated by the base layer treating agent is subjected to drying test, so that the waterproof effect can be better exerted after the subsequent waterproof coating and waterproof coiled material construction.
In this embodiment, the waterproof coating in step S4 is a creep type asphalt waterproof coating, and the waterproof roll is an SBS modified asphalt waterproof roll. The creep type non-cured asphalt waterproof coating has good flexibility and can better adapt to structural deformation. The construction process of the creep asphalt waterproof coating composite SBS modified asphalt waterproof coiled material comprises the following steps: elastic pre-paving coiled material, heating the creep asphalt waterproof coating after pre-paving the coiled material, putting the heated creep asphalt waterproof coating into a spraying machine, adjusting the flow of the spraying machine to ensure that the thickness of the sprayed coating is a certain thickness, for example, 2mm is an optimal thickness value determined by experiments, and the coating is 2.3kg/m2And spraying and paving the SBS modified asphalt waterproof coiled material at the same time, rolling and compacting, and closing the lap joint of the coiled material by a hot melting method. The composite construction method is favorable for the coating layer in direct contact with the base surface to adapt to structural deformation automatically and perfectly, creep repair can be carried out according to the expansion and contraction of the base surface, and the stress of the base layer is not reflected to the waterproof coil layer, so that the waterproof layer can be effective and lasting under the condition that the structural main body does not displace in a large range, and the hidden danger of leakage is avoided in the true sense.
In the embodiment, the surface of the laid waterproof roll is cleaned, and then the reflection type aluminum film self-adhesive roll is laid; the reflection-type aluminum film self-adhesive coiled material is an APF-405 aluminum film self-adhesive polymer modified asphalt waterproof coiled material, and the specific construction process comprises the following steps: the surface of the waterproof coiled material is cleaned to be ash-free and dust-free → special part treatment (additional layer treatment such as internal and external corners, pipe orifices and the like) → laying APF-405 aluminum-plated film self-adhesive polymer modified asphalt waterproof coiled material → lapping of coiled material seams → fixing, edge pressing → sealing material edge sealing → tissue acceptance inspection.
After the construction is finished, in order to verify the feasibility of the method for repairing the waterproof surface of the old roof, the waterproof surface of the repaired old roof is subjected to a waterproof test, and the test process is as follows:
and (3) performing an uninterrupted water closing test for 48 hours, observing no leakage indoors, and preventing water accumulation on the ground after water drainage, so that the requirements of 'roof engineering quality acceptance standard' of waterproof acceptance standard are met.
Example 2
A waterproof repairing structure of an old roof of a factory building, which is obtained by the construction of an old roof waterproof repairing method, comprises a leveling layer, a base layer treating agent layer, a first waterproof coating layer, a first waterproof coil layer, a first reflection type aluminum film self-adhesive coil layer, a caulking paste layer, a waterproof adhesive tape layer, a second waterproof coating layer, a second waterproof coil layer and a second reflection type aluminum film self-adhesive coil layer, wherein the leveling layer, the base layer treating agent layer, the first waterproof coating layer, the first waterproof coil layer and the first reflection type aluminum film self-adhesive coil layer are sequentially paved on the old roof; the base course treating agent layer is connected with the waterproof adhesive tape layer and is at the same height, the first waterproof coating layer is connected with the second waterproof coating layer and is at the same height, the first waterproof roll material layer is connected with the second waterproof roll material layer and is at the same height, and the first reflection type aluminum film self-adhesive roll material layer is connected with the second reflection type aluminum film self-adhesive roll material layer and is at the same height.
In this embodiment, the first waterproof coating layer and the second waterproof coating layer are integrated to form a waterproof coating layer 5; the first waterproof roll layer and the second waterproof roll layer are integrated into a waterproof roll layer 4; the first reflection-type aluminum film self-adhesive coil layer and the second reflection-type aluminum film self-adhesive coil layer are integrated to form a reflection-type aluminum film self-adhesive coil layer 3.
In this embodiment, the old roofs 9 are not integral, and in order to better adapt to thermal expansion and cold contraction, a separation seam 2 is usually provided between adjacent old roofs 9, and the separation seam 2 may be pre-filled with a waterproof material, or may not be filled with a structural layer directly covering the waterproof coating layer 5, the waterproof roll layer 4, the reflective aluminum film self-adhesive roll layer 3, and the like; the pre-filled waterproof material can prevent accumulated water from being formed in the separation seam 2 when the waterproof coating layer 5, the waterproof roll material layer 4 and the reflection-type aluminum film self-adhesion roll material layer 3 at the outlet of the separation seam 2 are leaked, so that the old roof 9 at the separation seam 2 is damaged, and the leakage risk is increased.
In this embodiment, the defects refer to places such as loose old roofs, honeycomb pitted surfaces, mortar surface layers and the like, the defect positions are cleaned firstly, and then the defect positions are leveled to form a leveling layer 7, so that the surface of the base surface is level; in the specific implementation process, not only can be trowelled at the defect, but also the old roofing 9 except the defect can be trowelled, so that the whole old roofing 9 is ensured to be flat, no pothole can be generated, the subsequent waterproof construction is convenient, and the water leakage point can be reduced.
Through on screed-coat 7 and old roofing 9, adopt basic unit's finishing agent to brush alternately and form basic unit's finishing agent layer 8, can remove dust on screed-coat 7 and old roofing 9, the screed-coat 7 of being convenient for and old roofing 9 can laminate better with follow-up waterproof layer, improve water-proof effects.
In the present embodiment, the separation gap 2 is pre-filled with caulking paste. The caulking paste is prepared from rubber particles and polyurethane sealant 1: 1 proportion, has better water-proof effects, and the thickness of caulking paste is about 20mm generally, avoids forming great load pressure to old roofing again as far as possible under guaranteeing better water-proof effects.
In this embodiment, a waterproof adhesive tape is attached to the surface of the caulking compound layer 1; the waterproof adhesive tape also covers the wall surface of the whole separation seam 2 and extends to the old roof 9, and the upper surface of the waterproof adhesive tape is attached to the lower surface of the waterproof coating layer 5. The waterproof adhesive tape layer 6 can improve the waterproof performance of the caulking paste layer 1; the waterproof adhesive tape 6 also covers the wall surface of the whole separation seam 2 and extends to the old roof 9 to be connected with the base layer treating agent layer 8 on the old roof 9, so that the seam of the whole waterproof repairing structure is reduced, and the leakage points are reduced; during construction, the waterproof adhesive tape extends to one side wall surface of the separation seam 2, the surface of the caulking paste layer 1, the other side wall surface of the separation seam 2 and the other end of the old roof 9 from one end of the old roof 9, and deformation widths are reserved on two sides of the separation seam 2 to adapt to deformation of the separation seam 2.
In this embodiment, when the separation seam 2 is an inverted trapezoid structure, the waterproof coating layer 5, the waterproof roll layer 4, and the part of the reflection-type aluminum film self-adhesive roll layer 3 extending to the separation seam 2 are laid by attaching the waterproof tape layer 6, and are in a U-shaped structure. The structure of the separation seam 2 can be square, V-shaped or other structures, when the separation seam 2 is of an inverted trapezoidal structure, the waterproof coating layer 5, the waterproof roll material layer 4 and the reflection-type aluminum film self-adhesive roll material layer 3 can be conveniently paved in the separation seam 2, and when the separation seam 2 deforms, a plurality of structural layers paved on the separation seam can also be kept in a fit state better, so that the waterproof effect is improved.
In this embodiment, the screed 7 is a self-leveling cement layer. The self-leveling cement paste layer has better fluidity and cohesiveness, is tightly combined with the old roof 9, is easy to form a leveling base surface and is convenient for subsequent construction.
In this embodiment, the base layer treating agent layer 8 is a high molecular polymer modified emulsified asphalt layer, the waterproof coating layer 5 is a creep type non-cured asphalt waterproof coating layer, and the waterproof roll layer 4 is a PE film SBS modified asphalt waterproof roll. The high molecular polymer modified emulsified asphalt is used as a base layer treating agent for coating, so that the dust removal effect and the waterproof effect are achieved; the creep deformation type non-cured asphalt waterproof coating and the base layer treating agent layer 8 form an integral full-paved waterproof layer, a coating layer in direct contact with the base layer treating agent layer 8 can automatically and perfectly adapt to structural deformation, creep deformation repair can be carried out according to the expansion and contraction of the base layer treating agent layer 8, and the stress of the base layer treating agent layer 8 is not reflected into the waterproof coil material layer; the PE film SBS modified asphalt waterproof coiled material is laid on the creep deformation type non-cured asphalt waterproof coating layer to form a double-layer waterproof layer, the creep deformation type non-cured asphalt waterproof coating layer can obstruct the stress reflection of the base layer treating agent layer 8, so that the waterproof layer can be lasting and effective under the condition that the structural main body does not displace to a large extent, and the hidden danger of leakage is avoided in the real sense.
In this embodiment, the thickness of the leveling layer 7 is 3-8 mm, the thickness of the base layer treating agent layer 8 is 500 μm, the thickness of the waterproof coating layer 5 is 2mm, the thickness of the waterproof roll layer 4 is 4mm, and the thickness of the reflection-type aluminum film self-adhesive roll layer 3 is 2 mm. The thickness of the non-cured waterproof coating waterproof layer is 2mm, the filling of subsequent thermal barrier cold contraction to a base surface is fully considered, and sufficient deformation supplement is reserved while the waterproof effect is ensured; the waterproof layer with the thickness of 4mm is selected to fully consider the durability of the subsequent waterproof layer, and the thickness directly reflects the effect of the waterproof layer; the protective layer adopts an aluminum film with the thickness of 2mm, the coiled material with the thickness less than 2mm is a non-padding coiled material, the waterproof layer with larger thickness can be more effectively protected, and the service life is prolonged.
In this embodiment, the old roof 9 is pre-filled with plain cement at the defect. The defects such as loose, honeycomb pitted surface, mortar surface layer and the like on the old roof 9 are filled with the plain cement, and the plain cement can be well and tightly combined with the defects to avoid the defects from becoming leakage points.
The waterproof repairing structure of the embodiment can not damage the structure layer of the old roof, the whole waterproof repairing structure layer mainly achieves the purpose of preventing water leakage by brushing waterproof paint and laying a waterproof coil layer, a high-weight waterproof structure layer is not required to be applied, and the load on the old roof can be effectively reduced.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (10)
1. A method for repairing an old roof by water proofing, wherein the old roof is provided with a separating seam, is characterized by comprising the following steps:
s1: chiseling the defects of the old roof and repairing holes with plain cement;
s2: leveling the defect position by using self-leveling cement paste to form an old roof leveling layer;
s3: coating a base layer treating agent on the leveling layer and the old roof not covered by the leveling layer to form a base layer treating layer;
s4: coating waterproof paint on the base layer treatment layer and the separation seams and synchronously paving waterproof rolls;
s5: and laying a reflection-type aluminum film self-adhesive coiled material on the surface of the waterproof coiled material.
2. The method for repairing old roofing according to claim 1, wherein said step S4 is preceded by the steps of: cleaning the separation seams, and filling the bottoms of the separation seams with caulking paste.
3. The method for waterproofing and repairing an old roof according to claim 2, wherein a waterproof tape is applied to the surface of the caulking compound after the caulking compound is filled in the separation joints.
4. The method for repairing the old roof by waterproof according to claim 3, wherein the specific attaching process of the waterproof adhesive tape comprises the following steps: the waterproof adhesive tape is laid from one end of the old roof, extends to one side wall surface of the separation seam, the surface of the caulking paste, the other side wall surface of the separation seam and then reaches the other end of the old roof, and is in a U-shaped structure; the two ends of the waterproof adhesive tape are connected with the base layer treatment layer and are as high as the base layer treatment layer.
5. The method for repairing the water proof of the old roof as claimed in claim 1, wherein the step S3 of coating the base layer treating agent comprises: brushing at least twice, wherein the brushing sequence is as follows: and brushing a first base layer treating agent on the leveling layer and the old roof not covered with the leveling layer once along the same direction, and brushing a second base layer treating agent once along the vertical direction after the surface is dried.
6. The method for repairing the water-proof surface of the old roof as claimed in claim 1, wherein the water-proof paint in step S4 is creep asphalt water-proof paint, and the water-proof coiled material is SBS modified asphalt water-proof coiled material.
7. The method for repairing the water proofing of the old roof according to claim 6, wherein the creep asphalt waterproof coating composite SBS modified asphalt waterproof coiled material is prepared by the following steps: heating the creep asphalt waterproof coating, putting the creep asphalt waterproof coating into a spraying machine, adjusting the flow of the spraying machine, paving and adhering the SBS modified asphalt waterproof coiled material while spraying, rolling and compacting, and closing the lap joint of the coiled material by a hot melting method.
8. The method for repairing old roofing waterproof according to claim 1, wherein before the step S4, the old roofing treated with the base layer treating agent is subjected to a drying test, and the water content is less than 9%.
9. The method for repairing the water-proof of the old roof as claimed in claim 2, wherein the caulking paste is prepared by mixing rubber particles and polyurethane sealant 1: 1, and preparing the composition.
10. A waterproof renovation structure of an old roof of a factory building, which is obtained by the waterproof renovation method of the old roof as claimed in any one of claims 1 to 9, and which comprises a leveling layer, a base layer treating agent layer, a first waterproof coating layer, a first waterproof roll layer, a first reflection type aluminum film self-adhesive roll layer, and a caulking paste layer, a waterproof adhesive tape layer, a second waterproof coating layer, a second waterproof roll layer, a second reflection type aluminum film self-adhesive roll layer, which are sequentially laid on the old roof; the base course treating agent layer is connected with the waterproof adhesive tape layer and is at the same height, the first waterproof coating layer is connected with the second waterproof coating layer and is at the same height, the first waterproof roll material layer is connected with the second waterproof roll material layer and is at the same height, and the first reflection type aluminum film self-adhesive roll material layer is connected with the second reflection type aluminum film self-adhesive roll material layer and is at the same height.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852063A (en) * | 2020-06-22 | 2020-10-30 | 北京建工集团有限责任公司 | Construction method for renovating and reforming large building roof |
| CN113047662A (en) * | 2021-05-17 | 2021-06-29 | 曾桂惠 | Leakage repairing method for crack of roof platform |
| CN113605740A (en) * | 2021-08-13 | 2021-11-05 | 中国水利水电第九工程局有限公司 | Waterproof construction method for hydropower house |
| CN114182901A (en) * | 2021-12-01 | 2022-03-15 | 深圳市科顺防水工程有限公司 | Waterproof repairing construction method for expansion joint and repairing structure thereof |
| CN114592651A (en) * | 2022-03-04 | 2022-06-07 | 安徽凯辰新材料有限公司 | Self-repairing maintenance-free waterproof system for roof and construction method |
| CN115898064A (en) * | 2021-10-13 | 2023-04-04 | 常熟市三恒建材有限责任公司 | Waterproof maintenance method for steel structure roof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109417U (en) * | 1991-12-30 | 1992-07-08 | 张国明 | Self-adhesive thermo-insulating water-proof coiled material |
| JP2002161643A (en) * | 2000-11-22 | 2002-06-04 | Mitsui Constr Co Ltd | Method for repairing concrete structure |
| JP2004011394A (en) * | 2002-06-11 | 2004-01-15 | Asahi Rubber Kk | Draining material |
| CN103774862A (en) * | 2014-01-24 | 2014-05-07 | 中国建材检验认证集团苏州有限公司 | Construction method for applying one-component polyurethane to renovation and reconstruction of old hard waterproof roof |
| CN204691091U (en) * | 2015-02-09 | 2015-10-07 | 海南红杉科创实业有限公司 | Light roofing system |
| CN206428985U (en) * | 2016-12-19 | 2017-08-22 | 四川东方雨虹防水工程有限公司 | A kind of local antiseep repairing structure of positively fixed type roofing |
| CN207892138U (en) * | 2017-12-27 | 2018-09-21 | 贾汇松 | A kind of fabricated roofing piece waterproof construction |
| CN109320748A (en) * | 2018-09-25 | 2019-02-12 | 四川杨氏达防水材料有限公司 | Waterproof system and preparation method thereof |
-
2020
- 2020-09-03 CN CN202010916921.8A patent/CN112227755A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109417U (en) * | 1991-12-30 | 1992-07-08 | 张国明 | Self-adhesive thermo-insulating water-proof coiled material |
| JP2002161643A (en) * | 2000-11-22 | 2002-06-04 | Mitsui Constr Co Ltd | Method for repairing concrete structure |
| JP2004011394A (en) * | 2002-06-11 | 2004-01-15 | Asahi Rubber Kk | Draining material |
| CN103774862A (en) * | 2014-01-24 | 2014-05-07 | 中国建材检验认证集团苏州有限公司 | Construction method for applying one-component polyurethane to renovation and reconstruction of old hard waterproof roof |
| CN204691091U (en) * | 2015-02-09 | 2015-10-07 | 海南红杉科创实业有限公司 | Light roofing system |
| CN206428985U (en) * | 2016-12-19 | 2017-08-22 | 四川东方雨虹防水工程有限公司 | A kind of local antiseep repairing structure of positively fixed type roofing |
| CN207892138U (en) * | 2017-12-27 | 2018-09-21 | 贾汇松 | A kind of fabricated roofing piece waterproof construction |
| CN109320748A (en) * | 2018-09-25 | 2019-02-12 | 四川杨氏达防水材料有限公司 | Waterproof system and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852063A (en) * | 2020-06-22 | 2020-10-30 | 北京建工集团有限责任公司 | Construction method for renovating and reforming large building roof |
| CN113047662A (en) * | 2021-05-17 | 2021-06-29 | 曾桂惠 | Leakage repairing method for crack of roof platform |
| CN113605740A (en) * | 2021-08-13 | 2021-11-05 | 中国水利水电第九工程局有限公司 | Waterproof construction method for hydropower house |
| CN115898064A (en) * | 2021-10-13 | 2023-04-04 | 常熟市三恒建材有限责任公司 | Waterproof maintenance method for steel structure roof |
| CN114182901A (en) * | 2021-12-01 | 2022-03-15 | 深圳市科顺防水工程有限公司 | Waterproof repairing construction method for expansion joint and repairing structure thereof |
| CN114182901B (en) * | 2021-12-01 | 2023-08-04 | 深圳市科顺防水工程有限公司 | Expansion joint waterproof repair construction method and repair structure thereof |
| CN114592651A (en) * | 2022-03-04 | 2022-06-07 | 安徽凯辰新材料有限公司 | Self-repairing maintenance-free waterproof system for roof and construction method |
| CN114592651B (en) * | 2022-03-04 | 2024-03-12 | 安徽中科凯辰高分子材料有限公司 | Roof self-repairing maintenance-free waterproof system and construction method |
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Application publication date: 20210115 |