CN113021570A

CN113021570A - Preparation method of bubble concrete masonry structure

Info

Publication number: CN113021570A
Application number: CN202110276023.5A
Authority: CN
Inventors: 邸云菲; 李孝雄; 石振庆; 孙磊
Original assignee: Chuzhou University
Current assignee: Chuzhou University
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-06-25

Abstract

The invention discloses a method for preparing a bubble concrete masonry structure, which relates to the technical field of building structural components, and includes the following steps: raw material pretreatment; mixing and foaming; pouring slurry; forming and curing; and block cutting. In the present invention, a hole-forming mechanism is arranged on the side plate to avoid the internal collapse of the block caused by direct pulling out. , the water can be stored on the wall for a long time, and the plaster can be built after the drying shrinks to an appropriate degree, which avoids the phenomenon of cracks in the mortar outside the failed cutting block; There is a top cover plate with a downward projection. When the tie steel bars during construction do not correspond to the gaps in the urban construction of the blocks, it is only necessary to build the two adjacent blocks in the opposite direction, and then tie the tie bars. It can be placed in the groove without bending, which improves the pull-out resistance of the wall.

Description

Preparation method of bubble concrete masonry structure

Technical Field

The invention relates to the technical field of building structural members, in particular to a preparation method of a bubble concrete masonry structure.

Background

The material of the aerated concrete block is internally provided with a large number of air holes and micropores, has the advantages of light weight, sound insulation, fire prevention, heat preservation, earthquake resistance, durability and the like, is widely applied to industrial and civil buildings, and becomes an important component of a novel wall material as a bearing or non-bearing structural material and a containment heat-preservation material, and the processing process is usually as follows: the material is prepared by the process flows of material preparation, foaming, pouring, maintenance, cutting and the like.

However, in the process of pouring and curing, certain disadvantages are found in the prior art: firstly, when the bubble concrete block prepared by the prior art is constructed, in order to prevent the dry shrinkage block from absorbing a large amount of mortar moisture, water needs to be sprayed on the built wall surface for secondary maintenance, but the moisture is difficult to remain for a long time on the vertical wall surface, and the water film attached to the wall surface at the upper end cannot lock the moisture after evaporation, so that the phenomena of cracks, hollows and non-adhesion are frequently generated at the maintenance failure block after the building and plastering are carried out; secondly, to the higher building block construction environment of wall height, in order to eliminate the shrinkage crack that produces because temperature variation between major structure and the wall body, need press when building 1.5m and bury two drawbars, prior art is directly to be fixed in between the adjacent two-layer building block with the drawbar by the mortar, but during actual construction, because the building block has not built when the drawbar is pre-buried to stretch into the wall body yet, and when building the clearance of the bottom surface before the building block, can let the building block actually build the step height and change, make the drawbar not correspond to building block interlaminar space department, need carry out the space height of impressing again of bending of certain degree to the drawbar, lead to the wall body anti-drawing ability to weaken.

Disclosure of Invention

The invention aims to provide a preparation method of a bubble concrete masonry structure, which aims to overcome the defects caused in the prior art.

A preparation method of a bubble concrete masonry structure comprises the following steps:

s1: pretreatment of raw materials: adding cement, admixture and various additives into a stirrer according to proper amount, and uniformly stirring to prepare cement paste;

s2: mixing and foaming: preparing a proper amount of foaming agent aqueous solution into fine uniform foam with the thickness of about 1mm, and then injecting the fine uniform foam into a stirrer to fully mix the foam and the cement;

s3: pouring slurry: injecting the fully stirred concrete slurry into a forming die cavity by using a pouring pump;

s4: forming and maintaining: forming a maintaining hole cluster which is obliquely and upwardly formed in slurry in a forming die cavity by a hole forming mechanism, limiting and forming the upper end surface of the concrete block, maintaining for 2-3 days under the conditions of constant temperature and constant humidity, and naturally maintaining for 7-10 days after demolding;

s5: cutting the building blocks: the blank needs to be stood still for a certain time, the temperature is 2-8h at normal temperature, and the blank is cut into the air bubble concrete building block with the required structure volume after having certain strength.

Preferably, the shaping die cavity includes curb plate, the sealing pulp board and the baffle that two symmetries set up, two all set up the inclined hole of a plurality of equipartition on the curb plate, the upper end of curb plate articulates there is the lamina tecti, the sealing pulp board has two, and wherein has seted up the direction opening on the sealing pulp board of one side, the baffle sets up in two between the curb plate, and with set up the direction open-ended sealing pulp board between set up the regulation storehouse, with set up the shaping storehouse between the sealing pulp board of opposite side.

Preferably, the hole forming mechanism comprises an air cylinder, a contact pin and a T-shaped support rod, the air cylinder is mounted at the side end of the side plate, an L-shaped connecting rod is mounted at the output end of the air cylinder, a mounting plate is fixed at one end of the connecting rod, the other end of the connecting rod penetrates through the guide plate and is slidably connected with a sliding ring, the T-shaped support rod is fixed with the upper end of the sliding ring, the lower end of the T-shaped support rod penetrates through a guide opening and is rotatably connected with two symmetrically arranged push-pull rods, the upper end of the push-pull rod is hinged on the lower end face of the top cover plate, the contact pin is provided with a plurality of contact pins which are obliquely and uniformly distributed on the mounting plate, a top cylinder is arranged on the contact pin in a limiting and sliding manner, the top cylinders are fixed through a fixing frame and are slidably arranged in the inclined hole, a top outlet is annularly arranged on, the movable material blocking part is hinged to the inside of the top barrel, elastic soft rubber is arranged between the contact pins and the push plate in the top barrel, and springs are sleeved on the contact pins at the end parts of the two sides of the mounting plate between the mounting plate and the top barrel.

Preferably, the lower ends of the two top cover plates are matched with the bubble concrete slurry, and the two top cover plates, the adjusting bin and the forming bin are sealed.

Preferably, the two push-pull rods are arranged in the adjusting bin.

Preferably, the push plate is matched with the inner wall of the top cylinder, and the push plate cannot topple in the sliding process inside the top cylinder.

Preferably, the elastic soft rubber is adhered to the contact pin.

Preferably, the elastic soft rubber is arranged between the stop lever and the movable material blocking piece in the extending range of the ejection opening.

The invention has the advantages that: (1) the side plate is provided with the hole forming mechanism, after slurry is placed into the forming die cavity, the slurry extends into the slurry from the top barrel, along with the continuous extension of the contact pin, the end part of the contact pin can push the elastic soft rubber to extrude and deform in the top barrel and outwards expand through the ejection opening, an inclined space area with the diameter larger than that of the top barrel is formed in the slurry, after the curing and forming of the building block are finished, the operation is reversely executed, the flexible elastic soft rubber is firstly separated from the inclined hole of the building block, the phenomenon that the building block is internally collapsed due to the fact that the building block is directly pulled out outwards is avoided, an inclined accumulated hole exists at the side end of the prepared bubble concrete masonry structure, when secondary watering and curing are carried out, water can be remained on the wall surface for a long time, plastering can be carried out after the dry shrinkage reaches a proper degree, and the phenomena that cracks and the like occur;

(2) through the shaping storehouse in the shaping die cavity in be provided with have the massive lamina tecti of downward convex for the bubble concrete block after the shaping forms at the up end with drawknot reinforcing bar matched with recess, drawknot reinforcing bar when the construction does not correspond to building block city and builds space department, only need with two adjacent building blocks of this department reverse build, again with drawknot reinforcing bar need not bend ground put into the recess can, promote the anti-tensile ability of pulling out of wall body.

Drawings

FIG. 1 is a process flow diagram of the present invention.

FIG. 2 is an assembly view of the molding cavity and the hole forming mechanism of the present invention.

Fig. 3 is a partial schematic view of the internal structure of the present invention.

FIG. 4 is a schematic view of a portion of a molding cavity of the present invention.

Fig. 5 is an internal sectional view of a part of the structure of the pore-forming mechanism in the present invention.

The device comprises a forming die cavity, a hole forming mechanism, 11-side plates, 12-slurry sealing plates, 13-baffle plates, 14-inclined holes, 15-top cover plates, 16-guide openings, 17-adjusting bins, 18-forming bins, 201-cylinders, 202-contact pins, 203-T-shaped supporting rods, 204-connecting rods, 205-mounting plates, 206-guide plates, 207-sliding rings, 208-push-pull rods, 209-top cylinders, 210-fixing frames, 211-top outlets, 212-torsion springs, 213-baffle pieces, 214-movable baffle pieces, 215-push plates, 216-elastic soft rubber and 217-springs.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, a method for preparing a bubble concrete masonry structure comprises the following steps:

s3: pouring slurry: injecting the fully stirred concrete slurry into the molding die cavity 1 by using a pouring pump;

s4: forming and maintaining: generating a maintaining hole cluster which is obliquely and upwards formed in slurry in a forming die cavity 1 by a hole forming mechanism 2, limiting and forming the upper end surface of the concrete block, maintaining for 2-3 days under the conditions of constant temperature and constant humidity, and naturally maintaining for 7-10 days after demolding;

In this embodiment, shaping die cavity 1 includes curb plate 11, the sealing pulp board 12 and the baffle 13 that two symmetries set up, two inclined hole 14 of a plurality of equipartition has all been seted up on the curb plate 11, and the upper end of curb plate 11 articulates there is lamina tecti 15, sealing pulp board 12 has two, and has seted up direction opening 16 on the sealing pulp board 12 of one side wherein, baffle 13 sets up in two between the curb plate 11, and with set up between the sealing pulp board 12 of direction opening 16 and set up regulation storehouse 17, and set up shaping storehouse 18 between the sealing pulp board 12 of opposite side.

In this embodiment, the hole forming mechanism 2 includes an air cylinder 201, a pin 202 and a T-shaped strut 203, the air cylinder 201 is installed at a side end of the side plate 11, an L-shaped connecting rod 204 is installed at an output end of the air cylinder 201, a mounting plate 205 is fixed at one end of the connecting rod 204, the other end of the connecting rod 204 penetrates through a guide plate 206 and is slidably connected with a sliding ring 207, the T-shaped strut 203 is fixed with an upper end of the sliding ring 207, a lower end of the T-shaped strut 203 penetrates through the guide opening 16 and is rotatably connected with two symmetrically arranged push-pull rods 208, an upper end of the push-pull rod 208 is hinged on a lower end surface of the top cover plate 15, a plurality of pins 202 are obliquely and uniformly distributed on the mounting plate 205, a top cylinder 209 is slidably arranged on the pin 202, a plurality of the top cylinders 209 are fixed by a fixing frame 210, the top cylinder 209 is slidably arranged in the inclined, the tip of top export 211 installs shelves piece 213 through torsional spring 212, and the other end of top export 211 installs the activity through torsional spring 212 and keeps off material piece 214, the activity keeps off material piece 214 and goes up the inside articulated push pedal 215 that has in top cylinder 209, sets up elasticity soft rubber 216 in top cylinder 209 between contact pin 202 and push pedal 215, and the cover is equipped with spring 217 on the contact pin 202 of the both sides tip of mounting panel 205 between mounting panel 205 and top cylinder 209.

In this embodiment, the lower ends of the two top cover plates 15 are matched with the aerated concrete slurry, and the two top cover plates 15 are sealed with the adjusting bin 17 and the forming bin 18.

It is worth mentioning that the joint of the two top cover plates 15 in the forming bin 18 is in a downward convex shape, and the vertical height of the convex block is 7-9mm, so that an inner groove is formed at the upper end of the formed bubble concrete block, and is used for placing tie bars during construction, and the overall structural strength of the block is not affected.

In this embodiment, two of the push-pull rods 208 are disposed in the adjustment chamber 17.

In this embodiment, the push plate 215 is engaged with the inner wall of the top cylinder 209, and does not topple during sliding inside the push plate.

It should be noted that the elastic soft rubber 216 is adhered to the pin 202, and the elastic soft rubber 216 is disposed between the stopper and the movable stopper 214 in the extending range of the ejection opening 211.

The working process and principle are as follows: in the pouring and curing process for preparing the bubble concrete masonry structure by adopting the method of the invention, firstly slurry is injected into the molding die cavity 1, then the air cylinder 201 is started, the output end of the air cylinder drives the connecting rod 204 to move downwards in the guide plate 206, the T-shaped supporting rod 203 is driven by the sliding ring 207 to move downwards in the vertical direction, the top cover plate 15 at the upper end is pulled to turn around the side plate 11 to complete folding by virtue of the guide opening 16 on the slurry sealing plate 12 through the two symmetrically arranged push-pull rods 208 which are hinged with each other, the upper end of the slurry is fixed by the groove structure through the convex block on the top cover plate 15, meanwhile, the connecting rod 204 also drives the mounting plate 205 to move synchronously, all top cylinders 209 on the fixing frame 210 move synchronously under the elastic action of the spring 217, when the middle part of the top cylinder 209 is abutted to the side plate 11, the end part of the contact pin 202 pushes the elastic soft rubber 216 to extrude and deform in the top cylinder 209 along with the, and outwards expand through the ejection opening 211, the elastic soft rubber 216 can also push the stopper 213 to outwards rotate and expand in the deformation process, meanwhile, the push plate 215 pushes the movable stopper 214 to outwards extend, and then the limitation of the two ends of the elastic soft rubber 216 expanded to the outside of the ejection cylinder 209 is completed, after the building block is cured and molded, the operation is reversely executed, the flexible elastic soft rubber 216 is firstly separated from the inclined hole of the building block, and the ejection cylinder 209 with the smaller diameter relative to the inclined hole is directly pulled out from the inclined hole of the end face of the building block under the action of the mounting plate 205.

Based on the above, according to the invention, the hole mechanism 2 is arranged on the side plate 11, after the slurry is placed in the molding die cavity 1, the slurry extends into the slurry from the top barrel 209, along with the continuous extension of the contact pin 202, the end part of the contact pin 202 can push the elastic soft rubber 216 to extrude and deform in the top barrel 209 and expand outwards through the top outlet 211, an inclined space area with the diameter larger than that of the top barrel 209 is formed in the slurry, after the building block is cured and molded, the upper operation is performed reversely, the flexible elastic soft rubber 216 is separated from the inclined hole of the building block at first, the phenomenon that the building block is internally collapsed due to the fact that the flexible elastic soft rubber 216 is directly pulled outwards is avoided, the side end of the prepared air bubble concrete masonry structure has an inclined storage hole, when the building block is cured by secondary sprinkling, the moisture can remain on the wall for a long time, and the building can be plastered after the building block is shrunk to a proper degree;

through set up in the shaping storehouse 18 in shaping die cavity 1 and have the massive lamina tecti 15 of downward bulge for the bubble concrete block after the shaping forms at the up end with drawknot reinforcing bar matched with recess, the drawknot reinforcing bar when the construction does not correspond building block urban construction space department, only need with two adjacent building blocks of this department reverse build, again with drawknot reinforcing bar need not bend ground put into the recess can, promote the anti-pulling ability of wall body.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. a bubble concrete masonry structure preparation method, is characterized in that, comprises the steps:

S1: Raw material pretreatment: Add cement, admixtures and various admixtures to the mixer according to appropriate metering, and mix them evenly to make cement slurry;

S2: Mixed foaming: Make an appropriate amount of foaming agent aqueous solution into a fine and uniform foam of about 1mm, and then inject it into the mixer to fully mix the foam and cement;

S3: pouring slurry: inject the fully stirred concrete slurry into the molding cavity (1) with a pouring pump;

S4: Forming maintenance: The hole forming mechanism (2) generates a cluster of maintenance holes opened obliquely in the slurry in the forming cavity (1), and at the same time, the upper end face of the concrete block is limited and formed. Condition curing for 2-3 days, and then natural curing for 7-10 days after demoulding;

S5: Block cutting: The embryo body needs to be statically stopped for a certain period of time, 2-8 hours at room temperature, and then cut into a bubble concrete block with the required structural volume after it has a certain strength.

2 . The gluing process for accessories of an air conditioning and refrigeration system according to claim 1 , wherein the molding cavity ( 1 ) comprises two symmetrically arranged side plates ( 11 ) and a slurry sealing plate ( 12 ). 3 . and a baffle plate (13), the two side plates (11) are provided with a plurality of evenly distributed inclined holes (14), the upper ends of the side plates (11) are hinged with a top cover plate (15), the sealing There are two pulp plates (12), and one side of the pulp sealing plate (12) is provided with a guide opening (16), the baffle plate (13) is arranged between the two side plates (11), And a regulating bin (17) is arranged between the slurry sealing plate (12) with the guide opening (16) and a forming box (18) is arranged between the slurry sealing plate (12) on the other side.

3. The adhesive process for air conditioning and refrigeration system accessories according to claim 1, wherein the hole forming mechanism (2) comprises a cylinder (201), a pin (202) and a T-shaped strut (203) ), the air cylinder (201) is installed on the side end of the side plate (11), the output end of the air cylinder (201) is installed with an “L”-shaped connecting rod (204), and one end of the connecting rod (204) is fixed with a the mounting plate (205), the other end of the connecting rod (204) penetrates the guide plate (206) and is slidably connected with a slip ring (207), the T-shaped strut (203) is fixed with the upper end of the slip ring (207), The lower end of the T-shaped support rod (203) penetrates the guide opening (16) and is rotatably connected with two symmetrically arranged push-pull rods (208), the upper ends of the push-pull rods (208) are hinged to the lower end surface of the top cover plate (15) There are several pins (202) and are evenly distributed on the mounting plate (205), the pins (202) are slidably provided with a top cylinder (209) at the upper limit, and a plurality of the top cylinders (209) They are fixed by the fixing frame (210), the top cylinder (209) is slidably arranged in the inclined hole (14), and the top cylinder (209) is provided with a top outlet (211) in the circumferential direction. A stopper (213) is installed at the end through a torsion spring (212), and a movable stopper (214) is installed at the other end of the ejection outlet (211) through a torsion spring (212). The movable stopper (214) A push plate (215) is hinged on the inside of the top cylinder (209), an elastic soft rubber (216) is arranged between the pins (202) and the push plate (215) in the top cylinder (209), and the mounting plate (205) Springs (217) are sleeved between the mounting plate (205) and the top cylinder (209) on the pins (202) at the ends on both sides of the mounting plate (209).

4. The adhesive process for air-conditioning and refrigeration system accessories according to claim 2, characterized in that: the lower ends of the two top cover plates (15) are matched with the air-bubble concrete slurry, and the two top cover plates (15) The cover plate (15) is sealed with the adjusting bin (17) and the forming bin (18).

5 . The gluing process for accessories of an air conditioning and refrigeration system according to claim 3 , wherein the two push-pull rods ( 208 ) are both placed in the adjustment bin ( 17 ). 6 .

6. The adhesive process for air conditioning and refrigeration system accessories according to claim 3, characterized in that: the push plate (215) and the inner wall of the top cylinder (209) cooperate with each other, and there is no sliding process in the inner wall. Dumping will occur.

7. The adhesive process for air conditioning and refrigeration system accessories according to claim 3, wherein the elastic soft rubber (216) and the pin (202) are bonded.

8 . The adhesive process for air-conditioning and refrigeration system accessories according to claim 7 , wherein the elastic soft rubber ( 216 ) is placed on a gear lever and movable in the extension range of the top outlet ( 211 ). 9 . between the stoppers (214).