CN116856565A - Construction method for top plug of post-built filling wall - Google Patents

Abstract

The construction method of the top plug of the post-built filling wall is characterized by comprising the following steps of: a. manufacturing and installing the wooden sphene: processing the wooden sphene into a wedge-shaped wooden sphene with the length of 100-150mm, b, and installing a steel wire mesh: the interface between the block gap and the plastering layer is provided with a galvanized steel wire mesh with the length not less than 300mm, and c, slurry throwing is wet: wetting the top surface of the wall body and the bottom of the concrete beam slab with water before caulking, and d, foaming glue or fine stone concrete caulking: when the seam is plugged, firstly, the seam is plugged from one side of the wall body, and then the other side is plugged after solidification; the seam is tightly sealed, the hardness is proper, and the surface of the seam is flat with the wall. The construction method for the top plug of the post-built filling wall has the advantages of replacing the inclined brick process, counteracting the deflection deformation of beams and plates, reducing the cracks on the surface of the wall body, saving the cost and having good applicability.

Description

A kind of construction method of back-laying infill wall top plugging

Technical field

The invention belongs to the technical field of house construction and installation engineering. Specifically, it is a construction method of back-filling wall and top-filling construction.

Background technique

With the continuous development of building masonry materials, more and more masonry materials are used in construction projects, and wall cracks also appear to varying degrees in various projects, especially at the junctions of walls and beams. , the crack problem at the connection between the back-filled infill wall and the main structure has always been a difficult problem on site, and is often called a common quality problem. According to the traditional method, when the infill wall is built to the bottom of the beams and slabs, a certain gap (180-200mm) should be left. After the infill wall is completed and the interval is at least 14 days, the infill wall should be built diagonally and tightly. Figure 1 is a schematic cross-sectional view of a known top sloping brick, the top of which is filled with sloping bricks. However, the top of the inclined masonry cannot be closely integrated with the bottom of the beam, which has a negative impact on the waterproofing and thermal insulation of the wall. The construction of the inclined masonry is cumbersome, the construction progress is slow, the technical level of the workers is high, and the molding appearance is average.

Therefore, the known back-laying filling wall top plugging method has the above-mentioned various inconveniences and problems.

Contents of the invention

The object of the present invention is to provide a safe and reliable construction method for back-laying infill walls and top plugging.

In order to achieve the above objects, the technical solution of the present invention is:

A construction method for back-filling wall top plugging, which is characterized by including the following steps:

a. Make and install wooden dowels: process the wooden dowels into wedge-shaped dowels with a length of 100-150mm. Use anti-corrosion asphalt to soak and dry the wedge-shaped dowels; when installing, use the length of the entire block as the spacing or other masonry blocks. The building materials are made into modules, and wedge-shaped wooden dowels are plugged into the gaps between the blocks. The spacing between the wedge-shaped dowels is no more than 600mm, and the wooden dowels on both sides of the wall are staggered;

b. Install steel wire mesh: A galvanized steel wire mesh with a length of not less than 300mm is installed at the interface between the block gap and the plastering layer. It is reinforced at the bottom of the plastering layer and a layer of fiberglass mesh is pressed into the surface of the plastering layer. (300g/m ² ); the interface includes the interface between concrete beams and blocks and the plaster layer;

c. Dump grout to moisten: Wet the top surface of the wall and the bottom of the concrete beam slab with water before plugging the joints, and then dump grout at the gaps between the blocks;

d. Fill the joints with foam glue or fine stone concrete: When filling the joints, start from one side of the wall first, and then fill the other side after solidification; when filling the joints, ensure that they are dense and dry and hard. The wall is flat.

The construction method of back-laying infill wall top plugging according to the present invention can also be further implemented by adopting the following technical measures.

The aforementioned method, wherein the foam rubber is used to fill the gap with a height of <20 mm.

The aforementioned method, wherein the fine stone concrete is used to fill gaps with a height of 30-50mm.

The aforementioned method, wherein the thickness of the wedge-shaped wood is 20-50mm.

The aforementioned method, wherein the hole spacing of the galvanized steel wire mesh is <12.7×12.7mm, and the wire diameter of the galvanized steel wire mesh is 0.9mm.

According to the aforementioned method, the edges and corners of the building blocks are not damaged when the wooden dowels are fixed, and the exposed portion of the wooden dowels on the wall is cut off with a saw.

After adopting the above technical solution, the construction method of back-laying infill wall and top plugging of the present invention has the following advantages:

1. Methods such as tightly applying prestress through anti-corrosion wooden dowels and then plugging with foaming agent or fine stone concrete (micro-expansion) can effectively replace the inclined brick process to offset the deflection deformation of beams and plates, and are in harmony with the wall bricks themselves. Coordinated shrinkage and deformation can effectively reduce cracks on the wall surface;

2. Foam rubber or fine stone concrete solidifies quickly, and the technical interval is short, which reduces the repeated erection of secondary structural scaffolding in inclined masonry construction, saves costs, and has good applicability and application effects.

Description of the drawings

Figure 1 is a schematic diagram of a known top inclined masonry section;

Figure 2 is a schematic structural diagram of a back-built infill wall and top plug construction according to an embodiment of the present invention.

In the picture: 1 concrete beam, 2 gaps, 3 steel mesh, 4 plaster layer.

Detailed ways

The present invention will be further described below with reference to the embodiments and the accompanying drawings.

Example 1

The construction process of the construction method of back-filling wall top plugging according to the present invention: measuring and laying out → arranging bricks and laying down the bottom (erecting the skin rod) → building a gap within 50mm of the bottom of the beam (board) → curing for 14 days → installing wooden dowels, Plug tightly → Moisten the grout → Fill half of the gap width on one side of the wall → Fill the other half of the gap width on the other side of the wall → Fix galvanized steel wire mesh → Plaster and maintain the wall → Plaster.

Please refer to Figure 2. Figure 2 is a schematic structural diagram of a back-built infill wall and top plug-in construction according to an embodiment of the present invention. The construction method of back-laying infill wall top plugging according to the present invention includes the following steps:

(1) Gap treatment: In the back-laying infill wall structure, the infill wall is built until there is a certain gap at the bottom of the beam 1 (slab). After the masonry is fully settled, the gap 2 treatment at the top of the wall is carried out. When the gap thickness is within 20mm, use foam rubber to fill it; when the gap thickness is between 30-50mm, use C20 fine stone concrete (micro-expansion) to fill it. The junction is reinforced with galvanized steel wire mesh 3 with a length of not less than 300mm (hole spacing 12.7×12.7mm, wire diameter 0.9mm) at the bottom of the plastering layer 4, and a layer of fiberglass mesh is pressed into the surface of the plastering layer. (300g/m ² ).

(2) Install the wooden dowel: The wooden dowel is processed into a wedge shape. The wedge-shaped wooden dowel has a thickness ranging from 20-50mm and a length of 100-150mm. It is soaked in anti-corrosion asphalt and dried in the sun. During installation, the wooden dowels are required to be tightly packed, with a spacing of no more than 600mm (use the length of the entire block as the spacing or other masonry materials as the module), and the wooden dowels on both sides of the wall are arranged in a staggered manner.

(3) Slurry wetting: wet the top surface of the wall and the bottom of the concrete beam slab with water before plugging the joints, and then slurry the gaps.

(4) Seams with foam glue or fine stone concrete: When filling seams, start from one side of the wall first, and then fill the other side after solidification. When plugging the joints, make sure they are dense and dry and hard. The surface after plugging the joints should be flush with the wall.

The construction principle of the back-laying infill wall of the present invention is as follows: the infill wall is built until there is a certain gap at the bottom of the beam (slab), and after the masonry is fully compacted, the top of the wall is caulked. When the gap thickness is within 20mm, use foam rubber to fill it; when the gap thickness is between 30-50mm, use C20 fine stone concrete (micro-expansion) to fill it. The junction is reinforced with galvanized steel wire mesh with a length of not less than 300mm (hole spacing 12.7×12.7mm, wire diameter 0.9mm) at the bottom of the plastering layer, and a layer of fiberglass mesh (300g) is pressed into the surface of the plastering layer. / ^m2 ).

The present invention has substantive features and significant technological progress. Compared with the traditional method, the construction method of back-fill wall top plugging is simple to construct and easy to operate. It can speed up the project progress and shorten the construction period. The plugging method This method can effectively replace the inclined brick process to offset the deflection deformation of beams and slabs, and is coordinated with the shrinkage deformation of the wall bricks themselves, which can effectively reduce cracks on the wall surface. At the same time, foam rubber or fine stone concrete solidifies quickly, and the technical interval is short, which reduces the repeated erection of secondary structural scaffolding in inclined masonry construction. It is welcomed by operators, management and user units.

The above embodiments are only for illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various transformations or changes without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by each claim.

Claims (6)

1. The construction method of the top plug of the post-built filling wall is characterized by comprising the following steps of:

a. manufacturing and installing the wooden sphene: processing the wooden sphene into wedge-shaped wooden sphene with the length of 100-150mm, soaking the wooden sphene in antiseptic asphalt and drying the wooden sphene in the sun; when in installation, the lengths of the whole blocks are taken as intervals or other masonry materials are taken as moduli, the gaps of the blocks are tightly plugged by the sphene-shaped wood blocks, the sphene-shaped intervals of the wedge-shaped wood blocks are not more than 600mm, and the sphene-shaped wood blocks on two sides of the wall body are staggered;

b. and (3) installing a steel wire mesh: the interface between the block gap and the plastering layer is provided with a galvanized steel wire mesh with the length not less than 300mm, the galvanized steel wire mesh is reinforced at the bottom of the plastering layer, and the surface layer of the plastering layer is pressed into a layer of glass fiber mesh cloth (300 g/m) ² ) The method comprises the steps of carrying out a first treatment on the surface of the The interface comprises an interface between the concrete beam, the building block and the plastering layer;

c. slurry throwing and wetting: wetting the top surface of the wall body and the bottom of the concrete beam slab with water before caulking, and then throwing slurry at the seams of the building blocks;

d. foam rubber or fine stone concrete caulking: when the seam is plugged, firstly, the seam is plugged from one side of the wall body, and then the other side is plugged after solidification; the seam is tightly sealed, the hardness is proper, and the surface of the seam is flat with the wall.

2. A method of construction of a post-construction infill wall crown block as claimed in claim 1, wherein the foaming glue is used to fill voids having a height of < 20mm.

3. A method of construction of a post-construction infill wall crown plug according to claim 1, wherein the fine stone concrete is used to fill voids having a height of 30-50mm.

4. A method of constructing a post-construction infill wall crown block as claimed in claim 1 wherein the wedge-shaped timber thickness is 20-50mm.

5. A construction method of a post-construction infill wall top plug according to claim 1, wherein the pitch of the galvanized steel wire mesh is < 12.7x12.7mm, and the wire diameter of the galvanized steel wire mesh is 0.9mm.

6. A method of constructing a post-construction infill wall crown block as claimed in claim 1, wherein the sphene is fixed without breaking the block corners, and the exposed portions of the sphene to the wall surface are cut by a saw.