Anti-cracking connecting structure for polyphenyl granule cement sandwich composite wallboard
By using a combination of steel bars and micro-expansion cement mortar in polystyrene particle cement sandwich composite wall panels, the problem of easy cracking at the contact surface between the wall panels and the main structure is solved, thereby improving crack prevention and construction efficiency.
Patent Information
- Application Number
- CN202520496068.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Polystyrene particle cement sandwich composite wall panels are prone to cracking at the joints due to stress concentration caused by temperature and load changes. Existing technologies are not effective in preventing cracks between the main structure and the wall panel contact surface.
The wall adopts a combination structure of steel bars and micro-expansion cement mortar. The bent part of the steel bars is fixed inside the wall panel and connected to the main structure. The surface of the wall panel is coated with a waterproof cement mortar layer. The high strength of the steel bars and the expansion property of the micro-expansion agent enhance the connection strength and reduce stress concentration.
It effectively prevents and controls the formation of cracks, extends the service life of wall panels, reduces maintenance costs, improves safety, and enhances construction efficiency through standardized construction processes.
Smart Images
Figure CN223951962U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wallboard installation technical field especially relates to a kind of anti-cracking connection structure for polystyrene granule cement sandwich composite wallboard. BACKGROUND
[0002] Polystyrene granule cement sandwich composite wallboard is widely used in modern building due to its good heat preservation and construction convenience. The connection between polystyrene granule cement sandwich composite wallboards is brittle, and in actual construction, any vibration will cause fine cracks between the wallboards, and the crack position often appears at the splicing or the interface of different materials. Currently, in the aspect of crack prevention, attention is often paid only to the contact surface of the wallboard, but the crack prevention of the contact surface of the wallboard and the main structure (concrete, masonry and other materials) is ignored. In fact, thermal expansion and contraction caused by foundation settlement and temperature change often cause cracking between different materials. Although double reinforcement measures of wire mesh and mesh cloth are used between different materials, cracking still occurs when the temperature changes greatly or the load changes during decoration. SUMMARY
[0003] The utility model provides a kind of anti-cracking connection structure for polystyrene granule cement sandwich composite wallboard, which can prevent cracking between the contact surface of the wallboard and the main structure.
[0004] The utility model is implemented as follows:
[0005] The utility model provides a kind of anti-cracking connection structure for polystyrene granule cement sandwich composite wallboard, which includes a steel bar, one end of the steel bar is installed in the main structure along the horizontal direction, the other end of the steel bar has a bending part, the bending part extends in the vertical direction of the composite wallboard, and the composite wallboard is provided with a surface recess.
[0006] When the composite wallboard is connected with the main structure, the steel bar exposed outside the main structure is located in the surface recess and in contact with the side wall of the surface recess, and the surface recess is also filled with micro-expanding cement mortar.
[0007] Further, the surface of the composite wallboard is also provided with a layer of waterproof cement mortar.
[0008] Further, the thickness of the waterproof cement mortar layer is 5mm.
[0009] Further, the main structure is a concrete structure, a masonry structure or a steel structure.
[0010] Further, the steel bar is of HRB400C10 type.
[0011] Further, along the vertical direction of the composite wallboard, the distance between the adjacent two plate surface grooves is 1.22m.
[0012] The utility model discloses the advantages are in: through the high strength, good tenacity and ductility of reinforcing steel bar increase composite wallboard and the integrity of main body structure, and the expansion and bonding strength of micro -expansion cement mortar, reduce the stress concentration caused by temperature change or load effect, inhibit crack generation from the source, effectively control the generation and development of crack, avoid the problem such as seepage, falling off caused by crack, prolong the service life of composite wallboard, reduce maintenance cost, improve the security of composite wallboard. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be further described below in combination with the embodiment with reference to the drawings.
[0014] Figure 1 It is a structure schematic diagram for the utility model of a kind of polyphenyl particle cement sandwich composite wallboard crack prevention connecting structure.
[0015] Figure 2 It is a structure schematic diagram for the utility model of polyphenyl particle cement sandwich composite wallboard and reinforcing steel connecting structure.
[0016] Figure 3 It is a structure schematic diagram for the utility model of a kind of polyphenyl particle cement sandwich composite wallboard and waterproof mortar layer connecting structure.
[0017] Figure 4 It is a structure schematic diagram for the utility model specific embodiment Figure 1 .
[0018] Figure 5 It is a structure schematic diagram for the utility model specific embodiment Figure 2 .
[0019] Figure 6 It is a structure schematic diagram for the utility model specific embodiment Figure 3 .
[0020] Mark explanation in drawing:
[0021] 1, reinforcing steel; 11, bending part; 2, polyphenyl particle cement sandwich composite wallboard; 21, plate surface groove; 3, micro -expansion cement mortar; 4, waterproof cement mortar layer; 5, main body structure; 51, concrete structure; 52, masonry structure; 53, steel structure. DETAILED DESCRIPTION
[0022] Please refer to Figures 1 to 6The utility model provides a kind of anti-cracking connecting structure 100 for polystyrene granule cement sandwich composite wallboard, including reinforcing bar 1, one end of the reinforcing bar 1 is installed in main structure 5 along horizontal direction, the other end of the reinforcing bar 1 has a bending portion 11, the bending portion 11 extends to the vertical direction of polystyrene granule cement sandwich composite wallboard 2, as shown, the polystyrene granule cement sandwich composite wallboard 2 is provided with panel surface groove 21;The setting position of panel surface groove 21 is positioned by using laser level wire laying, so that the horizontal position dimensional deviation of panel surface groove 21 and reinforcing bar 1 is not more than 2mm. Figure 2 As shown, the polystyrene granule cement sandwich composite wallboard 2 is provided with panel surface groove 21;The setting position of panel surface groove 21 is positioned by using laser level wire laying, so that the horizontal position dimensional deviation of panel surface groove 21 and reinforcing bar 1 is not more than 2mm.
[0023] When the polystyrene granule cement sandwich composite wallboard 2 is connected with main structure 5, the reinforcing bar 1 exposed outside the main structure 5 is located in panel surface groove 21, and is in contact with the side wall of panel surface groove 21, and the panel surface groove 21 is also filled with micro-expansion cement mortar 3.The micro-expansion cement mortar 3 is cement mortar mixed with 3% expansion agent.
[0024] Specifically, the surface of the polystyrene granule cement sandwich composite wallboard 2 is also provided with a layer of waterproof cement mortar layer 4.
[0025] Specifically, the thickness of the waterproof cement mortar layer 4 is 5mm.
[0026] Specifically, the main structure 5 is a concrete structure 51, a masonry structure 52 or a steel structure 53.
[0027] When the main structure 5 is a concrete structure 51, one end of the reinforcing bar 1 is fixed in the concrete structure 51 by means of anchoring glue, as shown in Figure 4 When the main structure 5 is a masonry structure 52, one end of the reinforcing bar 1 is placed in the masonry structure 52 in advance during the process of bricklaying, as shown in Figure 5 When the main structure 5 is a steel structure 53, one end of the reinforcing bar 1 is fixed to the steel structure 53 by welding, as shown in Figure 6
[0028] Specifically, the reinforcing bar 1 is of HRB400C10 type.
[0029] Specifically, along the vertical direction of the polystyrene granule cement sandwich composite wallboard 2, the spacing between two adjacent panel surface grooves 21 is 1.22m.
[0030] The high strength, good toughness and ductility of the steel bars increase the integrity of the composite wall panel and the main structure, the expansion and bonding strength of the micro-expansion agent cement mortar reduce the stress concentration caused by temperature change or load, inhibit the crack generation from the source, effectively control the generation and development of the cracks, avoid the problems of water seepage and falling caused by the cracks, prolong the service life of the composite wall panel, reduce the maintenance cost, and improve the safety of the composite wall panel.
[0031] In addition, the anti-cracking connecting structure has the advantages of convenient construction and economy, the standardized operation of accurate positioning by the laser level, size control (deviation ≤2mm) of the plate groove, and setting of the plate groove in the vertical direction every 1.22m, forms a standardized construction process, reduces the human operation error, and ensures the process consistency.
[0032] The anti-cracking connecting structure has remarkable crack prevention and treatment effect, reduces the later maintenance frequency and cost, and reduces the comprehensive cost by more than 20% compared with the traditional process.
[0033] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that the specific examples described are only illustrative, and are not used to limit the scope of the utility model, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the utility model should be covered in the scope of protection of the claims of the utility model.
Claims
1. A crack-resistant connection structure for polystyrene particle cement sandwich composite wall panels, characterized in that: The steel bar is arranged in the main structure in a horizontal direction, and the other end of the steel bar has a bending part extending in a vertical direction of the composite wallboard, and the composite wallboard is provided with a surface groove. When the composite wallboard is connected with the main structure, the steel bar exposed outside the main structure is located in the surface groove and in contact with the side wall of the surface groove, and the surface groove is filled with micro-expansion cement mortar.
2. The anti-cracking connecting structure for the polystyrene particle cement sandwich composite wall panel according to claim 1, characterized in that: The surface of the composite wallboard is further provided with a waterproof cement mortar layer.
3. The anti-cracking connecting structure for the polystyrene particle cement sandwich composite wall panel according to claim 2, characterized in that: The thickness of the waterproof cement mortar layer is 5 mm.
4. The anti-cracking connecting structure for the polystyrene particle cement sandwich composite wall panel according to claim 1, characterized in that: The main structure is a concrete structure, a masonry structure or a steel structure.
5. The anti-cracking connecting structure for the polystyrene particle cement sandwich composite wall panel according to claim 1, characterized in that: The steel bar is of HRB400C10 type.
6. The anti-cracking connecting structure for the polystyrene particle cement sandwich composite wall panel according to claim 1, characterized in that: In the vertical direction of the composite wallboard, the distance between two adjacent surface grooves is 1.22 m.