CN104074292A - A damp-proof and heat insulating ground system and a construction method thereof - Google Patents

Abstract

The invention discloses a moisture-proof and heat-insulating ground system and a construction method thereof, wherein the ground system comprises: a base layer; a damp-proof layer laid on the base layer; a heat-insulating layer laid on the damp-proof layer; an inorganic heat-insulating and heat-preserving mortar layer , laid on top of the insulation layer. The invention is applicable to the ground of non-concrete full house foundation in industrial and civil multi-storey or low-rise buildings.

Description

Moisture-proof and heat-insulating ground system and its construction method

technical field

The invention relates to the technical field of ground structures, in particular to a moisture-proof and heat-insulating ground system and a construction method thereof.

Background technique

With the gradual advancement of building energy-saving policies, the thermal insulation of various industrial and civil building envelopes has become the focus of research, mainly including building walls, doors, windows, roofs, etc., but the thermal insulation of the ground as an envelope has always been Failed to get attention.

The foundations of urban high-rise buildings generally adopt reinforced concrete full-height foundations (such as raft foundations or box foundations), and the moisture-proof and thermal insulation of the ground can be solved by setting special waterproof layers and structural layers. Most of the industrial and civil buildings around the city and in the vast rural areas are multi-storey or low-rise buildings, and the building foundations are mostly strip foundations, independent foundations or pile foundations, and the ground is directly connected to the earth. For the building foundations whose ground is directly connected to the earth, there are requirements for moisture-proof fortifications as well as thermal insulation. The ground system integrating moisture-proof and heat insulation is the development direction of multi-storey or low-rise industrial and civil buildings in the future. However, there is no satisfactory ground system in the prior art to meet this requirement.

Contents of the invention

In view of this, the embodiments of the present invention provide a moisture-proof and heat-insulating ground system and its construction method, the main purpose of which is to provide a ground system and its construction method suitable for non-concrete full hall foundations in industrial and civil multi-storey or low-rise buildings.

In order to achieve the above object, the present invention mainly provides the following technical solutions:

On the one hand, an embodiment of the present invention provides a moisture-proof and heat-insulating ground system, which includes:

base layer;

Moisture-proof layer, laid on top of the base layer;

The insulation layer is laid on the moisture-proof layer;

The inorganic thermal insulation mortar layer is laid on the thermal insulation layer.

Preferably, the ground system also includes:

The leveling layer is laid on the inorganic heat insulation mortar layer;

The ground decoration layer is laid on the leveling layer.

Preferably, the leveling layer is formed by plastering with cement mortar, and the leveling layer is built with a crack-resistant reinforced steel wire mesh.

Preferably, the thickness of the leveling layer is 1 cm-2 cm, and the compressive strength of the leveling layer is not less than 20 MPa.

Preferably, the ground decoration layer is made of wooden floor, ceramic tile or stone.

Preferably, the base layer is formed by pouring concrete, laying bricks or rubble, or the base layer is rammed by lime soil, composite soil or plain soil.

As a preference, the moisture-proof layer is made of waterproof coiled material or PVC plastic film, wherein when the waterproof coiled material or PVC plastic film is spliced, the width of the lap joint is not less than 10 cm, and the lap joint is fixed by bonding or welding to ensure waterproof The thickness of the coil is not less than 2mm, and the thickness of the PVC plastic film is not less than 0.1mm.

Preferably, the insulation layer is laid by prefabricated insulation boards.

Preferably, the thickness of the prefabricated insulation board is not less than 5cm, the prefabricated insulation board includes an organic insulation board and an inorganic insulation board, the compressive strength of the organic insulation board is not less than 0.15MPa, and the compressive strength of the inorganic insulation board is not less than 0.3 MPa.

Preferably, the prefabricated insulation board includes molded polystyrene board, extruded polystyrene board, rigid polyurethane foam board, foam glass board, aerated concrete board or foam concrete board.

Preferably, the inorganic thermal insulation mortar layer is made of vitrified microbead thermal insulation mortar or expanded perlite thermal insulation mortar. The thickness of the inorganic thermal insulation mortar layer is not less than 5cm. The inorganic thermal insulation mortar layer formed after hardening The compressive strength of the thermal insulation mortar layer is not less than 0.2MPa.

On the other hand, an embodiment of the present invention also provides a construction method for a moisture-proof and heat-insulating ground system, the method comprising:

Use concrete to pour the base layer, or lay bricks or rubble to form the base layer, or tamp lime soil, composite soil or plain soil to form the base layer;

Lay waterproof coiled material or PVC plastic film on the base layer to form a moisture-proof layer, and use empty laying technology during construction;

Prefabricated insulation boards are laid on the moisture-proof layer to form an insulation layer. No bonding materials are required during construction, and the dry laying is smooth;

Vitrified microbead thermal insulation mortar or expanded perlite thermal insulation mortar is applied on-site on the thermal insulation layer to form an inorganic thermal insulation mortar layer;

When surface decoration is required, cement mortar is used to level the inorganic heat insulation mortar layer on site to form a leveling layer; then a ground decoration layer is laid on the leveling layer.

A moisture-proof and heat-insulating ground system and its construction method proposed by the embodiment of the present invention,

The ground system of the invention integrates moisture-proof and heat-insulating, and conforms to the development direction of multi-storey or low-rise industrial and civil buildings in the future. It greatly reduces energy consumption and has economic and social benefits.

Description of drawings

Fig. 1 is a schematic structural diagram of a moisture-proof and heat-insulating ground system provided by an embodiment of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Fig. 1 is a schematic structural diagram of a moisture-proof and heat-insulating ground system provided by an embodiment of the present invention. As shown in Figure 1, a moisture-proof and heat-insulating ground system, the system includes:

base layer 1;

The moisture-proof layer 2 is laid on the base layer 1;

The insulation layer 3 is laid on the moisture-proof layer 2;

The inorganic thermal insulation mortar layer 4 is laid on the thermal insulation layer 3 .

In the embodiment of the present invention, the base layer 1 provides a supporting foundation for the ground system, preventing local collapse, deformation and damage of the ground system. In this embodiment, the base layer may be formed by pouring concrete, or laid with bricks or rubble, or rammed lime soil, composite soil or plain soil to form the base layer. The materials used for the base layer in the above embodiments are all economical and readily available materials, which can be reasonably selected according to local conditions, and the construction method is simple and easy. The main function of the moisture-proof layer 2 is to isolate the moisture of the earth and prevent the moisture from affecting the ground system and the space above the ground system. In this embodiment, waterproof roll material or PVC plastic film is used as the moisture-proof isolation layer. On the one hand, the materials are cheap and easy to obtain, and on the other hand, these materials have relevant national standards, so the quality is easy to guarantee. The lap joints of the waterproof membrane or PVC plastic film are fixed by bonding or welding to ensure the integrity of the moisture-proof layer. During construction, the empty laying process is adopted to not bond with the base layer as a whole, so as to avoid stress and strain on the moisture-proof layer during uneven settlement of the base layer, which will cause the moisture-proof layer to be torn. On the one hand, the thermal insulation layer 3 plays the main role of thermal insulation of the ground system, effectively preventing the heat in the space above the ground system from exchanging heat with the earth, and on the other hand, plays a role of protection for the moisture-proof layer. In this embodiment, prefabricated insulation boards are laid to form the insulation layer 3 . Insulation layer 3 is dry-laid and flat without adhesive materials. On the one hand, it does not interfere with the moisture-proof layer below. On the other hand, no adhesive materials are used between the insulation panels to avoid the phenomenon of cold and heat bridges affecting the overall thermal insulation effect of the insulation layer. . The prefabricated insulation board in this embodiment can be molded polystyrene board, extruded polystyrene board, rigid polyurethane foam board, foam glass board, aerated concrete board or foam concrete board. The prefabricated thermal insulation board material selected in this embodiment has a low thermal conductivity and good thermal insulation effect, and at the same time, the supply is sufficient in the market and is easy to purchase. On the one hand, the inorganic thermal insulation mortar layer 4 has a good thermal insulation effect, and together with the thermal insulation layer 3, it can effectively prevent the heat in the space above the ground system from exchanging heat with the earth, thereby reducing the maintenance of the ground system. The temperature of the space needs to consume energy. On the other hand, the inorganic thermal insulation mortar layer in this embodiment is a non-combustible material, which is laid on the thermal insulation layer to protect the thermal insulation layer from being ignited by the fire source that may come from the room. The ground system of the present invention integrates moisture-proof, heat-insulating and fire-proof, and conforms to the development direction of ground engineering of multi-storey or low-rise industrial and civil buildings in the future. On the premise of ensuring safety, the energy consumption is greatly reduced, and it has significant economic and social benefits.

When surface decoration is required for other requirements such as comfort in use, the ground system also includes a leveling layer 5 and a ground decoration layer 6. The foundation maintains the stability of the ground decoration layer 6 and prevents its deformation; the ground decoration layer 6 is laid on the leveling layer 5 .

The construction method of the moisture-proof and heat-insulating ground system of the embodiment of the present invention is as follows:

Use concrete to pour the base layer, or lay bricks or rubble to form the base layer, or tamp lime soil, composite soil or plain soil to form the base layer;

Lay waterproof coiled material or PVC plastic film on the base layer to form a moisture-proof layer, and use empty laying technology during construction;

Prefabricated insulation boards are laid on the moisture-proof layer to form an insulation layer. No bonding materials are required during construction, and the dry laying is smooth;

Vitrified microbead thermal insulation mortar or expanded perlite thermal insulation mortar is applied on-site on the thermal insulation layer to form an inorganic thermal insulation mortar layer;

When surface decoration is required, cement mortar is used to level the inorganic heat insulation mortar layer on site to form a leveling layer; then a ground decoration layer is laid on the leveling layer.

Splicing is often required when laying the moisture-proof layer. When splicing waterproof coiled materials or PVC plastic films, the width of the lap joints should not be less than 10cm, and the lap joints should be fixed by bonding or ultrasonic welding. Make the moisture-proof layer form a solid structure, improve the moisture-proof effect and service life. Generally speaking, the thickness of the waterproof membrane is not less than 2mm, and the thickness of the PVC plastic film is not less than 0.1mm. This thickness provides sufficient strength and moisture resistance.

The insulation layer is laid with prefabricated insulation boards, no bonding materials are required during construction, and the dry laying is smooth. The thickness of the insulation board is not less than 5cm, which ensures the insulation effect. The selected insulation board can be divided into organic insulation board and inorganic insulation board according to the material. The compressive strength of the organic insulation board is not less than 0.15MPa, and the compressive strength of the inorganic insulation board is not less than 0.3MPa, which ensures the strength of the insulation board. The insulation board is mainly selected from: molded polystyrene board, extruded polystyrene board, rigid polyurethane foam board, foam glass board, aerated concrete board or foam concrete board, etc.

The inorganic thermal insulation mortar layer adopts vitrified microbead thermal insulation mortar or expanded perlite thermal insulation mortar, which is applied on-site by plastering and pressing, and the thickness is not less than 5cm. After hardening, the compressive strength of the thermal insulation mortar shall not be less than 0.2MPa.

The leveling layer is leveled with cement mortar on site, and the anti-cracking reinforced steel mesh is built in during construction to ensure the strength of the leveling layer and avoid cracking. The thickness of the leveling layer is preferably 1-2cm, and the compressive strength after hardening is not less than 20MPa.

The ground decoration layer can choose decorative ground materials such as wooden floor, ceramic tile, stone, etc., and carry out construction according to the conventional construction methods of various materials.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the spirit and protection scope of the present invention, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the present invention.

Claims (12)

1. moisture-proof heat-insulation ground system, is characterized in that, this system comprises:

Basal layer;

Damp-proof course, is layed on basal layer;

Insulation layer, is layed on damp-proof course;

Inorganic heat-insulating screed, is layed on insulation layer.

2. ground system according to claim 1, is characterized in that, described ground system also comprises:

Leveling layer, is layed on inorganic heat-insulating screed;

Ground decoration layer, is layed on described leveling layer.

3. ground system according to claim 2, is characterized in that, described leveling layer is smeared to press by cement mortar and formed, and described leveling layer is built-in with cracking resistance and strengthens gauze wire cloth.

4. ground system according to claim 2, is characterized in that, the thickness of described leveling layer is 1cm-2cm, and the compressive strength of described leveling layer is not less than 20MPa.

5. ground system according to claim 2, is characterized in that, described ground decoration layer is formed by wood flooring, ceramic tile or stone laying.

6. ground system according to claim 1, is characterized in that, described basal layer by concreting form, brick or rubble lay and form, or described basal layer is formed by dirt, tabia or rammed earth.

7. ground system according to claim 1, it is characterized in that, described damp-proof course is formed by waterproof roll or PVC covering plastic thin film, when wherein waterproof roll or PVC plastic sheeting splice, the width of overlap joint is no less than 10cm, lap-joint is by boning or being welded and fixed, and the thickness of waterproof roll is not less than 2mm, and the thickness of PVC plastic sheeting is not less than 0.1mm.

8. ground system according to claim 1, is characterized in that, described insulation layer is laid and formed by precast heated board.

9. ground system according to claim 1, it is characterized in that, the thickness of described precast heated board is not less than 5cm, described precast heated board comprises organic heat-insulating plate and inorganic heat-insulation board, described organic heat-insulating plate compressive strength is not less than 0.15MPa, and described inorganic heat-insulation board compressive strength is not less than 0.3MPa.

10. ground system according to claim 1, is characterized in that, described precast heated board comprises mold pressing polyphenyl plate, extruding polyphenyl plate, hard polyurethane foam board, foam glass board, aerated concrete panel or foam concrete plate.

11. ground systems according to claim 1; it is characterized in that; described inorganic heat-insulating screed is smeared to press by kervit microbead insulated sand slurry or swelling perlite heat-insulating mortar and is formed; the thickness of described inorganic heat-insulating screed is not less than 5cm, and the compressive strength of the inorganic heat-insulating screed forming after thermal insulation mortar sclerosis is not less than 0.2MPa.

The construction method of 12. 1 kinds of moisture-proof heat-insulation ground systems, described ground system is the ground system described in claim 1-11 any one, the method comprises:

Use concreting basal layer, or lay brick or rubble basis of formation layer, or compacting dirt, tabia or rammed earth basis of formation layer;

On basal layer, form damp-proof course with waterproof roll or PVC covering plastic thin film, when construction, adopt empty paving technique;

Adopt precast heated board on damp-proof course, lays formation insulation layer, when construction, do not need adhesives, dry pave whole;

Adopt kervit microbead insulated sand slurry or swelling perlite heat-insulating mortar scene on insulation layer to smear and press construction to form inorganic heat-insulating screed;

In the time that needs carry out incrustation, first on inorganic heat-insulating screed, smear and press levelling to form leveling layer with cement mortar scene; Then on leveling layer, lay ground decoration layer.