Anti-crack construction method for ALC wallboard

Abstract

The invention relates to the technical field of constructional engineering, in particular to an ALC wallboard anti-cracking construction method which comprises the following steps: step 1, surveying and setting out, determining the mounting position of an ALC wallboard according to a construction drawing and a field positioning axis, and snapping a line; step 2, arranging wallboards, namely arranging the wallboards from a door opening to two ends respectively when the door opening exists in the inner partition wall body; when the door opening does not exist in the inner partition wall body, the plates are arranged in sequence from one end of the wall body in the wall length direction; 3, wallboard installation is conducted, specifically, PVC hard rubber strips are additionally arranged on the tops of the ALC wallboards, and it is guaranteed that the wallboards abut against the upper structure beam slab; the wedge-shaped hard PVC cushion blocks are used at the bottoms of the wallboards and are not taken out after being installed, and cracks generated by sinking of the wallboards after triangular wooden wedges are taken out can be reduced; after the wallboards are installed and corrected, hammering or vibration is carried out on the side edges of the wallboards, and it is guaranteed that abutted seams of the wallboards are tight.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to an anti-cracking construction method for an ALC wall panel. Background Art

[0002] In the modern construction industry, with the rapid development of prefabricated construction technology, ALC (Autoclaved Lightweight Concrete) wall panels have been widely used in the internal partition systems of various prefabricated buildings due to their excellent light weight, high strength, thermal insulation and convenient construction. The promotion and use of ALC wall panels has not only significantly improved the efficiency of construction, but also promoted the greening and sustainable development of building materials.

[0003] However, in the actual construction process of ALC wall panels, the existing installation and fixing methods still have several technical bottlenecks that need to be solved. Specifically, the currently commonly used construction process is to rely on simple tools such as triangular wooden wedges for temporary fixing after the wall panels are initially installed and the position is corrected. Although this fixing method is simple and easy to use, it has the problem of unstable fixing effect and easy loosening, especially under the influence of external force or long-term load, which may cause the wall panel position to shift, affecting the stability and aesthetics of the overall structure.

[0004] In addition, the joint treatment between ALC wall panels and the connection between the wall panels and the main structure are also key technical links. In the existing technology, special adhesive materials are often used for filling, but in actual operation, due to construction conditions, material performance differences or improper operation, the filling is often incomplete and uneven. In the later use process, especially under the influence of temperature and humidity changes, structural settlement and other factors, the joints of the wall panels and the intersection of the wall panels and the structure are prone to become stress concentration areas, resulting in cracks, affecting the sealing, durability and safety of the wall. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present application provides an ALC wall panel anti-cracking construction method, which aims to improve the application effect and engineering quality of ALC wall panels in prefabricated buildings.

[0006] The technical means adopted by the present invention to solve the technical problem is: an ALC wallboard anti-cracking construction method, the improvement of which is that it includes the following steps:

[0007] Step 1: Measure and lay out the lines, determine the installation position of the ALC wall panels and draw the lines according to the construction drawings and on-site positioning axis;

[0008] Step 2: Arrange the wall panels. When there is a door opening in the inner partition wall, arrange the panels from the door opening to both ends. When there is no door opening in the inner partition wall, arrange the panels from one end of the wall in sequence along the length of the wall.

[0009] Step 3: Wall panel installation, including:

[0010] S31. After the wall panel is transported to the installation location, an L-shaped pipe clamp is knocked into the top of the wall panel;

[0011] S32. The joint between the first wall panel and the structure is fully coated with adhesive with uniform thickness; the top of each wall panel is coated with adhesive and then pressed with PVC hard rubber strip;

[0012] S33, push the wall panel upright to the installation position, pry the bottom of the wall panel to adjust the installation position and verticality and flatness of the wall panel, and tighten the upper part of the wall panel, and put a wedge-shaped hard PVC pad at the bottom of each wall panel to fix it;

[0013] S34. After adding pads to the side of the wall panel, knock or vibrate it to squeeze and compact the joints between the wall panel and the structure, and between the wall panels;

[0014] S35. After installation and correction, the pipe clamps are fixed to the structure with nails, and the bottom of the wallboard is filled with adhesive;

[0015] S36. Press the alkali-resistant glass fiber mesh into the joints between the wall panels and the structure, and the joints between the wall panels, and scrape the extruded adhesive flat.

[0016] In the above technical solution, when there is a door opening in the inner partition wall, the width of the filler plate shall not be less than 200 mm or shall be designed as a cast-in-place concrete structural column.

[0017] The L-shaped pipe clamp fixing position in the above technical solution is 60-80mm away from the edge of the plate, and the exposed pipe clamp length is 10-30mm.

[0018] The wedge-shaped hard PVC pad described in the above technical solution has a width of 60 mm, a length of 100 mm and a height of 50 mm.

[0019] During the wall panel installation process of step 3 described in the above technical solution, when applying the adhesive at the junction of the wall panel and the structure, it is necessary to ensure that the adhesive completely covers the junction surface without leaving any gaps, and the thickness of the adhesive after applying is controlled to be 3-5mm.

[0020] In step 33 described in the above technical solution, after the wall panel is erected to the installation position, a level ruler and a vertical ruler are used to check the horizontality and verticality of the wall panel respectively, and the error is adjusted to no more than ±2mm.

[0021] In step 35 described in the above technical solution, when using nails to fix the L-shaped pipe clamp, it is necessary to ensure that the nails penetrate into the structural layer by at least 20 mm, and the spacing between the nails is not greater than 300 mm.

[0022] In step 36 of the above technical solution, when pressing in the alkali-resistant glass fiber mesh, it should be ensured that the glass fiber mesh completely covers the junction between the wall panel and the structure, the joints between the wall panels, and the overlapping width of the mesh cloth is not less than 50 mm.

[0023] In the above technical solution, after the construction is completed, the surface of the wall panel is cleaned to remove excess adhesive and impurities, and the junction between the wall panel and the structure and the joints between the wall panels are carefully inspected.

[0024] In the above technical solution, after all the wall panels are installed and reach the curing period, the quality of the entire wall is inspected, including but not limited to the verticality, flatness, joint treatment quality, and crack resistance of the wall panels.

[0025] The beneficial effects of the present invention are as follows: by adding a PVC hard rubber strip on the top of the ALC wall panel, the wall panel and the upper structure beam are ensured to be tightly pressed against each other; a wedge-shaped hard PVC pad is used at the bottom of the wall panel, which is not removed after installation, so as to reduce cracks caused by the sinking of the wall panel after the triangular wooden wedge is removed; after each wall panel is installed and corrected, the side of the wall panel is hammered or vibrated to ensure that the wall panel joints are tight, thereby improving the application effect and engineering quality of the ALC wall panel in prefabricated buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A flowchart of an ALC wallboard anti-cracking construction method shown in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a wedge-shaped hard PVC pad according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the installation and construction of the ALC wall panel according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0031] As mentioned above, in order to solve the problems existing in the prior art, the present invention proposes an improved ALC wall panel installation construction method and supporting materials to enhance the application effect and engineering quality of ALC wall panels in prefabricated buildings.

[0032] like Figure 1 As shown, the method comprises the following steps:

[0033] Step 1: Measure and lay out the lines. According to the construction drawings and the on-site positioning axis, determine the installation position of the ALC wall panels and mark the lines. Specifically, the following steps are included:

[0034] Review construction drawings: Before installation, review the construction drawings again to ensure that all dimensions and location information are accurate.

[0035] Confirmation of on-site positioning axis: Use high-precision measuring tools such as total station or laser rangefinder to accurately determine the on-site positioning axis and mark it.

[0036] Measurement and layout: According to the construction drawings and on-site positioning axis, use tools such as ink line or laser projection to pop up the installation position line of the ALC wall panel on the ground and wall to ensure clear and accurate lines.

[0037] Review measurement results: After completing the measurement and layout, conduct a review to ensure that all lines meet the design requirements and have no deviations.

[0038] Step 2: Arrange the wall panels. When there is a door opening in the inner partition wall, arrange the panels from the door opening to both ends. When there is no door opening in the inner partition wall, arrange the panels from one end of the wall in sequence along the length of the wall.

[0039] Among them, when there is a door opening in the inner partition wall, the width of the supplementary plate shall not be less than 200mm or it shall be designed as a cast-in-place concrete structural column; for walls of special shapes such as L-shape and T-shape, a detailed panel arrangement plan shall be formulated in advance to ensure that the size, quantity and splicing method of the wall panels meet the design requirements.

[0040] Step 3: Wall panel installation, including:

[0041] S31. After the wall panel is transported to the installation location, an L-shaped pipe clamp is knocked into the top of the wall panel. The L-shaped pipe clamp is fixed at a distance of 60-80 mm from the edge of the panel, and the exposed pipe clamp length is 10-30 mm.

[0042] In one possible implementation, a panel turning machine is used to transport the wall panel to the desired installation position, and an L-shaped pipe clamp is knocked into the top of the wall panel. The L-shaped pipe clamp is fixed at a distance of 60 mm from the edge of the panel, and the length of the exposed pipe clamp is controlled at 10 mm.

[0043] In another possible implementation, a panel turning machine is used to transport the wall panel to the desired installation position, and an L-shaped pipe clamp is knocked into the top of the wall panel. The L-shaped pipe clamp is fixed at a distance of 70 mm from the edge of the panel, and the length of the exposed pipe clamp is controlled at 20 mm.

[0044] In another possible implementation, a panel turning machine is used to transport the wall panel to the desired installation position, and an L-shaped pipe clamp is knocked into the top of the wall panel. The L-shaped pipe clamp is fixed at a distance of 80 mm from the edge of the panel, and the length of the exposed pipe clamp is controlled at 30 mm.

[0045] S32. The first wall panel and the structure are connected by applying adhesive fully and evenly; after applying adhesive on the top of each wall panel, a 10mm thick PVC hard rubber strip is pressed in.

[0046] When applying the adhesive at the junction of the wall panel and the structure, it is necessary to ensure that the adhesive completely covers the junction surface without leaving any gaps, and the thickness of the adhesive after application is controlled at 3-5mm to ensure the best bonding strength and crack resistance.

[0047] In one possible implementation, the thickness of the adhesive after scraping is 3 mm; in another possible implementation, the thickness of the adhesive after scraping is 5 mm.

[0048] S33. Push the wall panel upright to the installation position, pry the bottom of the wall panel to adjust the installation position and verticality and flatness of the wall panel, and tighten the upper part of the wall panel. Place a wedge-shaped hard PVC pad at the bottom of each wall panel to fix it.

[0049] In a possible implementation, after the wall panel is erected to the installation position, a level ruler and a vertical ruler are used to check the horizontality and verticality of the wall panel respectively, and the error is adjusted to no more than ±2 mm to ensure the installation accuracy and flatness of the wall panel.

[0050] Place 4 wedge-shaped hard PVC pads at the bottom of each wall panel to fix it. Figure 2 As shown, the wedge-shaped hard PVC pad has a width of 60 mm, a length of 100 mm, and a height of 50 mm.

[0051] S34. Place wooden blocks on the sides of the wall panels and then knock or vibrate them to compact the joints between the wall panels and the structure, and between the wall panels.

[0052] Optionally, the side of the wall panel is struck or vibrated with a rubber hammer or vibrator and a wooden block to squeeze and compact the joints between the wall panel and the structure and between the wall panels.

[0053] S35. After installation and correction, the pipe clamps are fixed to the structure with nails, and the bottom of the wall panel is filled with adhesive.

[0054] When using nails to fix L-shaped pipe clamps, ensure that the nails penetrate the structural layer by at least 20mm and the nail spacing is no more than 300mm; when the wall panel height is greater than 3m, the wall panel and the upper and lower structures are connected with pipe clamps to enhance the stability of the pipe clamps and the overall safety of the wall panel.

[0055] In one possible implementation, when using nails to fix the L-shaped pipe clamps, ensure that the nails penetrate 25 mm into the structural layer and the nail spacing is 250 mm; when the wall panel height is 3.5 m, the wall panel and the upper and lower structures are connected with pipe clamps to enhance the stability of the pipe clamps and the overall safety of the wall panel.

[0056] S36. Press the alkali-resistant glass fiber mesh into the joints between the wall panels and the structure, and the joints between the wall panels, and scrape the extruded adhesive flat.

[0057] Optionally, the alkali-resistant glass fiber mesh is 100 mm wide. When pressing the alkali-resistant glass fiber mesh, ensure that the glass fiber mesh completely covers the junction between the wall panel and the structure, the joints between the wall panels, and the overlapping width of the mesh cloth is not less than 50 mm to improve the crack resistance and integrity of the wall.

[0058] Repeat step 3 to install each wall panel in sequence.

[0059] In one possible implementation, after the construction is completed, the surface of the wall panels is cleaned to remove excess adhesive and impurities, and the joints between the wall panels and the structure and the joints between the wall panels are carefully inspected. If necessary, sealant can be used for secondary sealing to enhance the waterproofness and durability of the wall.

[0060] In one possible implementation, after all wall panels are installed and reach the curing period, the entire wall is inspected for quality, including but not limited to the verticality, flatness, joint treatment quality, and crack resistance of the wall panels, to ensure that the construction quality meets the design requirements and relevant standards.

[0061] like Figure 3 As shown, the present application also provides a schematic diagram of the installation and construction of an ALC wall panel, wherein the ALC wall panel 3 is erected to the installation position, and an L-shaped pipe clamp 2 is knocked into the top of the wall panel, and an adhesive 6 is applied to the junction with the structure (concrete beam or slab A) to a full and uniform thickness, and then a 10 mm thick PVC hard rubber strip 1 is pressed in, and an alkali-resistant glass fiber mesh 4 is pressed in the junction between the wall panel and the structure and the joints between the wall panels, and four wedge-shaped hard PVC pads 5 are placed at the bottom of the wall panel for fixing.

[0062] The anti-cracking construction method of ALC wall panels provided by the present invention ensures that the wall panels are tightly pressed against the upper structure beams by adding PVC hard rubber strips on the top of the ALC wall panels; a wedge-shaped hard PVC pad is used at the bottom of the wall panel, which is not removed after installation, so as to reduce cracks caused by sinking of the wall panel after the triangular wooden wedge is removed; after each wall panel is installed and corrected, hammering or vibration is performed on the side of the wall panel to ensure that the wall panel joints are tight, thereby improving the application effect and engineering quality of the ALC wall panels in prefabricated buildings.

[0063] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An ALC wallboard anti-cracking construction method, characterized in that: The following steps are involved: Step 1: Measure and lay out the lines, determine the installation position of the ALC wall panels and draw the lines according to the construction drawings and on-site positioning axis; Step 2: Arrange the wall panels. When there is a door opening in the inner partition wall, arrange the panels from the door opening to both ends. When there is no door opening in the inner partition wall, arrange the panels from one end of the wall in sequence along the length of the wall. Step 3: Wall panel installation, including: S31. After the wall panel is transported to the installation location, an L-shaped pipe clamp is knocked into the top of the wall panel; S32. The joint between the first wall panel and the structure is fully coated with adhesive with uniform thickness; the top of each wall panel is coated with adhesive and then pressed with PVC hard rubber strip; S33, push the wall panel upright to the installation position, pry the bottom of the wall panel to adjust the installation position and verticality and flatness of the wall panel, and tighten the upper part of the wall panel, and put a wedge-shaped hard PVC pad at the bottom of each wall panel to fix it; S34. After adding pads to the side of the wall panel, knock or vibrate it to squeeze and compact the joints between the wall panel and the structure, and between the wall panels; S35. After installation and correction, the pipe clamps are fixed to the structure with nails, and the bottom of the wallboard is filled with adhesive; S36. Press the alkali-resistant glass fiber mesh into the joints between the wall panels and the structure, and the joints between the wall panels, and scrape the extruded adhesive flat.

2. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: When there is a door opening in the internal partition wall, the width of the filler plate shall not be less than 200mm or it shall be designed as a cast-in-place concrete structural column.

3. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: The L-shaped pipe clamp fixing position is 60-80 mm away from the edge of the plate, and the exposed pipe clamp length is 10-30 mm.

4. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: The wedge-shaped hard PVC pad has a width of 60 mm, a length of 100 mm and a height of 50 mm.

5. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: During the wall panel installation process in step 3, when applying the adhesive at the junction of the wall panel and the structure, it is necessary to ensure that the adhesive completely covers the junction surface without leaving any gaps, and the thickness of the adhesive after applying is controlled to be 3-5 mm.

6. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: In step 33, after the wall panel is erected to the installation position, a horizontal ruler and a vertical ruler are used to check the horizontality and verticality of the wall panel respectively, and the error is adjusted to not exceed ±2 mm.

7. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: In step 35, when nails are used to fix the L-shaped pipe clamps, it is necessary to ensure that the nails penetrate into the structural layer by at least 20 mm, and the distance between the nails is not greater than 300 mm.

8. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: In step 36, when the alkali-resistant glass fiber mesh is pressed in, it should be ensured that the glass fiber mesh completely covers the junction between the wall panel and the structure, the joints between the wall panels, and the overlapping width of the mesh cloth is not less than 50 mm.

9. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: After the construction is completed, the surface of the wall panels is cleaned to remove excess adhesive and impurities, and the joints between the wall panels and the structure, as well as the joints between the wall panels, are carefully inspected.

10. The ALC wallboard anti-cracking construction method according to claim 1, characterized in that: After all the wall panels are installed and reach the curing period, the quality of the entire wall is inspected, including but not limited to the verticality, flatness, joint treatment quality, and crack resistance of the wall panels.

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