CN202000499U - Outer insulation wall with mechanically-anchored grid reinforced rock wool plate - Google Patents

Abstract

The utility model relates to an external thermal insulation wall body using a mechanical fixing device to anchor a rock wool board with grid reinforcement. It uses leveling on the base wall as a bonding layer. First, the grid reinforcement rock wool board for thermal insulation is bonded to the wall before the leveling layer is dried, which plays an auxiliary connection and stabilization role to ensure the flatness of the rock wool board. Then drill holes on the surface of the board and use plastic expansion anchors to fix the grid-reinforced rock wool insulation board directly on the base wall, so that all the loads of the external thermal insulation system are completely borne by the fixed anchor bolts and transferred to the base structure wall. The organic combination of anchor bolts and reinforced rock wool boards can also play an auxiliary role in stabilizing the load of the leveling layer of the base wall. Therefore, the utility model external thermal insulation wall is especially suitable for energy-saving renovation projects of external thermal insulation of existing building external walls, and can better solve the technical problems of poor bearing capacity and difficult surface treatment of the old base of external walls.

Description

External thermal insulation wall of mechanically anchored grid-reinforced rock wool board

Technical field

The utility model relates to an external heat-preservation wall body of an external wall with a mechanical fixing device anchoring a grid-reinforced rock wool board, and is especially suitable for energy-saving reconstruction projects of existing external walls of buildings.

Background technique

The existing mechanically anchored rock wool board external thermal insulation wall is a composite wall formed by combining the base wall and the rock wool board. Due to the low tensile strength and flexural strength of the rock wool board, steel wire mesh is generally used for surface reinforcement. This structure requires that when the rock wool board is fixed, a gasket must be added between the steel wire mesh and the surface of the rock wool board. There is a certain distance between the steel wire mesh and the rock wool board; at the same time, the steel wire mesh and the rock wool board are directly fixed on the structural wall with anchors, and then a 20mm thick leveling layer is applied on both sides of the steel wire mesh.

However, due to the low peeling strength of the rock wool board, the above-mentioned method of increasing the leveling layer will directly lead to an increase in the load on the surface layer of the thermal insulation rock wool board. The external thermal insulation wall leaves hidden dangers in quality, safety and stability. Therefore, it is necessary to improve the fixing method of the thermal insulation rock wool board.

Utility model content

In order to overcome the disadvantages of the existing mechanically anchored rock wool board external insulation wall using anchors and steel wire mesh fixing methods that may cause hidden dangers in quality, safety and stability, the utility model provides a mechanical fixing device for anchoring grid reinforcement rock wool The external thermal insulation wall of the board, the external thermal insulation wall can not only solve the quality and safety and stability problems that may be caused by increasing the load of the leveling layer, but also can significantly improve the tensile strength and flexural strength of the rock wool board. In addition, the construction process is simple and fast.

The technical scheme adopted by the utility model to solve the technical problem is: on the surface of the base wall, a batch of polymer mortar is used as a leveling and bonding layer, and at the same time, the rock wool board with two-way grid reinforcement ribs is sandwiched in the surface layer, and then bonded On the base wall, ensure the flatness of the rock wool board. According to needs, the material of the grid reinforcement is bidirectional glass fiber mesh, metal steel wire mesh or chemical fiber mesh. Then drill holes on the surface of the board and use plastic expansion anchors to fix the rock wool board with grid reinforcement directly on the wall of the base structure. Finally, thinly spread the anti-crack mortar of the protective surface layer and roll-coat the elastic paint of the finish coat on the outer surface of the grid-reinforced rock wool board.

The thickness of the leveling and bonding layer polymer mortar is 3-9 mm, which meets the needs of leveling and bonding thickness. The distance between the plastic expansion anchor bolts of the above-mentioned mechanical fixing devices arranged in parallel longitudinally and horizontally is 200-450×200-450mm, and the optimal distance is 250-400×250-400mm. The number of anchor bolts is ≥8 per square meter. The effective anchoring depth is ≥ 25mm, and the optimal anchoring depth is 35-45mm; the diameter of the anchor bolt is ≥ 8mm, the standard value of the tensile bearing capacity of a single anchor bolt is ≥ 0.6KN, and the diameter of the leaking hole pressure plate of the plastic disc at the outer end of the anchor bolt is ≥ 60mm. To ensure the stability of the insulation board.

The external thermal insulation wall of the above-mentioned mechanically anchored grid reinforced rock wool board is characterized in that: a batch of polymer mortar is used for leveling and bonding layer on the base wall; The board is bonded to the base wall to form a gap-free insulation layer; the paving is arranged horizontally with rectangular boards, and the vertical joints should be staggered one by one; then drill holes on the board surface and install plastic expansion boards with plastic disc leakage holes at the end Anchor bolts, directly fix the grid reinforcement insulation rock wool board on the base wall.

Beneficial effects of the utility model: Compared with the existing rock wool board using anchors and steel wire mesh to fix the external heat preservation wall, the leveling and bonding layer can combine the leveling of the base layer and the auxiliary paste of the heat preservation board to form one time, reducing the construction process and Construction period; the mechanical fixing device is used to anchor the grid-reinforced rock wool insulation board, the construction process is simple, the operation is convenient, and the construction quality is easy to control; the combination of the grid-reinforced rock wool board and the anchor bolt greatly improves the tensile strength of the insulation layer , flexural strength and stability. The utility model is especially suitable for the energy-saving renovation of the external thermal insulation of the existing building exterior walls, and can effectively solve the defects of insufficient bonding strength caused by local shelling, cracks or surface pollution isolation membranes of the old base of the wall, and is beneficial to the original There is a base layer that can play a reinforcing and protective role and improve its stability.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a longitudinal sectional structural diagram of Fig. 1 .

Figure 3 is a schematic diagram of the front elevation of the mechanically anchored grid-reinforced rock wool board.

In the figure: 1. Base wall, 2. Leveling and bonding layer, 3. Grid reinforcement rock wool board, 4. Plastic expansion anchor bolt, 5. Thin plastering protection surface layer, 6. Finishing layer.

Detailed ways

In Fig. 1, the external thermal insulation wall of the present invention consists of base wall 1, leveling and bonding layer 2, grid reinforcement rock wool board 3, plastic expansion anchor bolt 4, and thin plastering protection surface from inside to outside. Layer 5 and finishing layer 6. The base wall 1 can be a concrete wall, an aerated concrete block wall, a solid brick wall, a hollow brick wall or a lightweight cement sand block wall. The grid reinforcement rock wool board 3 is composed of a rock wool board and grid reinforcement ribs in the surface layer of the board surface. The rock wool board can be a pendulum rock wool board or a three-dimensional rock wool board; the grid reinforcement is glass Fiber mesh, metal steel wire mesh or chemical fiber mesh, glass fiber mesh or chemical fiber mesh is made of glass fiber or chemical fiber warp and weft cross weaving, metal wire mesh is made of longitudinal steel wire and transverse steel wire cross welding connection According to the needs, the grid reinforcement can be set on both sides or on one side. The plastic expansion anchor bolt 4 can be a percussion anchor bolt or a screw anchor bolt, and the plastic sleeve and the disk leakage hole pressing plate can be made of polyamide, polyethylene, polypropylene material. The thin plastering protective surface layer 5 is composed of plastering anti-crack mortar and alkali-resistant glass fiber mesh cloth. Finishing layer 6 is made up of surface coat and finishing paint.

In Figure 2, the leveling and bonding layer 2 is to form the leveling layer and the bonding layer on the base wall at one time. The full batch thickness of the polymer mortar is 3-9mm. The lattice reinforcement rock wool board 3 is bonded on the base wall, and the surface layer reinforcement of the rock wool board faces outside the wall. After the bonding strength of the flat bonding layer is found to be ≥0.06MPa, the grid reinforcement rock wool board 3 is anchored on the base wall 1 with plastic expansion anchor bolts 4 drilled on the surface of the board, and the effective anchorage depth of the anchor bolts should be ≥ 25mm, the optimal anchoring depth is 35-45mm; the diameter of the anchor bolt is ≥8mm, and the diameter of the plastic disc leakage hole pressure plate is ≥60mm, and the optimal diameter is 65-95mm. Then apply the thin plastering protective surface layer 5 on the grid reinforcement rock wool board 3, and cover the plastic expansion anchor bolt 4 to protect the insulation layer; the thin plastering protective surface layer 5 adopts polymer anti-cracking mortar, There is a reinforced mesh in the middle, which plays the role of anti-crack, waterproof and impact resistance. The finishing layer 6 is painted on the thin plastering protective surface layer 5, and is constructed in layers by using flexible putty, elastic surface coating and elastic coating.

In the embodiment shown in Figure 3, the laying method of the grid reinforcement rock wool board 3 is that the rectangular boards are arranged horizontally, the vertical joints should be staggered line by line, and the staggered spacing is ≥ 250mm, and the optimal staggered spacing is 300mm and 400mm Modulus, in order to give full play to the anchoring effect of the saddle anchor bolt. The length of the grid reinforced rock wool board is 800-2400mm, the optimum length is 900-1600mm, the width is 400-1600mm, and the optimum width is 600-1200mm. The arrangement of the plastic expansion anchor bolts 4 is a combination of nails in the middle of the board and board seams. The anchoring spacing arranged in parallel longitudinally and horizontally is 200-450mm×200-450mm, and the optimal anchoring spacing is 250-400mm×250-400mm. The number of anchor bolts in the side seam of each side plate is ≥3, and the spacing is ≤400mm. The four corners of the plate should be provided with anchor bolts. The number of anchor bolts is ≥8 per square meter to ensure the insulation layer of the grid reinforcement rock wool board stability.

Claims (8)

1. the external heat insulating wall of a mechanically-anchored grid reinforcing rib rock cotton board, on basic unit's body of wall, levelling hold concurrently setting course, gridding strengthening rib rock wool board, plastic expansion crab-bolt, thin protection surface layer, the finish coat of plastering are arranged from the inside to the outside successively, it is characterized in that: on basic unit's metope, completely criticize the polymer mortar levelling setting course of holding concurrently; Simultaneously the heat preservation rock plate that accompanies two-way grid reinforcing rib in the top layer is bonded on basic unit's metope, forms the tight insulation layer; Paving is that rectangular slab is transversely arranged, and perps is the fissure of displacement line by line; In the plastic expansion crab-bolt of plate face boring mounting end band plastic disc small opening pressing plate, grid reinforcing rib heat preservation rock plate directly is fixed on basic unit's body of wall then.

2. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1, it is characterized in that: described grid reinforcing rib is to be formed by the warp of glass fiber or chemical fibre and parallel right-angled intersection woollen yarn knitting, and perhaps grid reinforcing rib is formed by connecting by vertical steel wire and transverse steel wire right-angled intersection electric welding.

3. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1, it is characterized in that: the hold concurrently polymer mortar thickness of setting course of the levelling on the described basic unit metope is 3～9mm, simultaneously bonding insulation gridding strengthening rib rock wool board on basic unit's metope.

4. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1 is characterized in that: described rock cotton board is pendulum method rock cotton board or 3D approach rock cotton board, and the length of plate is 800～2400mm, and width is 400～1600mm.

5. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1, it is characterized in that: the anchoring spacing that described plastic expansion crab-bolt vertical, horizontal is arranged in parallel is 200～450 * 200～450mm, crab-bolt quantity 〉=3 of every side plate side seam, spacing≤400mm; Crab-bolt diameter 〉=8mm, the diameter 〉=60mm of the plastic disc small opening pressing plate of end; Effective anchorage depth 〉=25mm of crab-bolt.

6. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1 is characterized in that: described basic unit body of wall is concrete wall, air-entrained concrete building block body of wall, solid brick body of wall, hollow brick wall or light cement sand blockwork.

7. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1 is characterized in that: the optimum length of described rock cotton board is 900～1600mm, and optimum width is 600～1200mm.

8. the external heat insulating wall of mechanically-anchored grid reinforcing rib rock cotton board according to claim 1 is characterized in that: the best anchoring spacing that described plastic expansion crab-bolt vertical, horizontal is arranged in parallel is 250～400 * 250～400mm; The optimum diameter of the plastic disc small opening pressing plate of crab-bolt end is 65～95mm; The best effectively anchorage depth of crab-bolt is 35～45mm.

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