CN217811664U

CN217811664U - Anti-cracking waterproof structure for plugging screw hole of outer wall

Info

Publication number: CN217811664U
Application number: CN202221944009.4U
Authority: CN
Inventors: 李叶青; 杨奇玮; 王义恒; 余松柏; 李莎; 李运生; 王丹
Original assignee: Huaxin Cement Co Ltd
Current assignee: Huaxin Cement Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-11-15
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to an anti waterproof construction that splits for shutoff outer wall screw hole, including PVC pipe, plug joint filling layer, flexible waterproof layer and mortar protective layer, the PVC pipe sets up in the screw hole, the plug joint filling layer is to the intraductal extrusion of PVC receive the face and flush with outer wall outside wall face after sufficient state, flexible waterproof layer applies paint with a brush at plug joint filling layer surface, covers whole screw hole, the mortar protective layer covers at flexible waterproof layer surface. Through the utility model discloses can form a whole with outer wall screw hole and outer wall concrete, effectively avoid producing the gap between outer wall screw hole and the outer wall concrete, improve the waterproof ability in screw hole to reduce outer wall seepage risk, prolong the life of building.

Description

Anti-cracking waterproof structure for plugging screw hole of external wall

Technical Field

The utility model relates to a building engineering wall body construction field, more specifically say, relate to a crack waterproof construction that splits for shutoff outer wall screw hole.

Background

Along with the diversified development of building technology, the requirement on the quality of the building outer wall is higher and higher, templates can be prefabricated on two sides before the reinforced concrete wall is poured, and the templates are fixed in the middle by using wall penetrating bolts. Just need carry out the shutoff to the screw rod hole of reserving when dismantling the template, form a whole with outer wall concrete to prevent the outer wall seepage problem from appearing.

For solving because of the not closely knit outer wall seepage hidden danger that brings of screw hole shutoff, traditional concrete outer wall screw hole often can adopt and fill up cement mortar or polyurethane foamer or even some still can choose for use quick lost circulation material to carry out the shutoff processing at screw hole surface in screw hole, but these methods have following problem in the application:

1. poor seepage-proofing effect: the cement mortar does not have a waterproof function, and the shrinkage and cracking problems are easy to occur, so that the water seepage of the outer wall is caused; the use of polyurethane foaming agents does not have wind pressure resistance, particularly in high-rise buildings, and the material itself is subject to aging over time.

2. In addition, use quick lost circulation material at screw hole surface, though can obviously shorten construction cycle, nevertheless belong to rigid material, outer wall body, screw hole intussuseption material and PVC pipe three receive external environment influence, and it is asynchronous that the deformation is down under the condition to have expend with heat and contract with cold, can lead to the plugging material fracture, hardly guarantees the shutoff effect.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing an anti waterproof construction that splits for shutoff outer wall screw hole, forms a whole with outer wall screw hole and outer wall concrete, effectively avoids producing the gap between outer wall screw hole and the outer wall concrete, improves screw hole waterproof ability to reduce outer wall seepage risk, prolong the life of building.

The utility model provides a technical scheme that its technical problem adopted is: the anti-cracking waterproof structure for blocking the outer wall screw hole comprises a PVC pipe, a plug seam filling layer, a flexible waterproof layer and a mortar protective layer, wherein the PVC pipe is arranged in the screw hole, the plug seam filling layer is extruded to the interior of the PVC pipe to be in a filling state, the closing surface of the plug seam filling layer is flush with the outer wall surface of the outer wall, the flexible waterproof layer is coated on the outer surface of the plug seam filling layer, the whole screw hole is covered, and the mortar protective layer covers the outer surface of the flexible waterproof layer.

According to the scheme, the crack filling layer adopts micro-expansion anti-crack waterproof crack filling mortar, and the micro-expansion anti-crack waterproof crack filling mortar is single-component cement-based mortar.

According to the scheme, the flexible waterproof layer is made of polymer cement waterproof paint.

According to the scheme, the polymer cement waterproof coating is a two-component polymer cement waterproof coating, and the thickness of the two-component polymer cement waterproof coating is 1.5-2.0mm.

According to the scheme, the mortar protective layer is made of common plastering mortar with the thickness of 3-5 mm.

Implement the utility model discloses a crack waterproof construction that splits for shutoff outer wall screw hole has following beneficial effect:

the utility model discloses a crack waterproof construction is simple, construction convenience for shutoff outer wall screw hole. The micro-expansion anti-crack waterproof plug seam mortar is pressed into the outer wall screw hole, the two side spaces of the PVC pipe through the wall are isolated, the outer surface is coated with the flexible waterproof layer material and subjected to mortar protection, the outer wall screw hole and the outer wall concrete form a whole, a gap between the outer wall screw hole and the outer wall concrete is effectively avoided, the waterproof capacity of the screw hole is improved, the outer wall leakage risk is reduced, and the service life of a building is prolonged.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural diagram of an anti-cracking waterproof structure for plugging screw holes in an outer wall;

FIGS. 2-5 are schematic views of the construction steps of the screw hole plugging of the outer wall;

reference numerals: 1. concrete for the outer wall; 2. PVC pipes; 3. filling a gap with a filling layer; 4. a flexible waterproof layer; 5. and (5) a mortar protective layer.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in figures 1-5, the crack-resistant and waterproof structure for plugging screw holes in external walls of the present invention comprises a plug-seam filling layer 3, a flexible waterproof layer 4 and a mortar protective layer 5, which are sequentially arranged from the inner side of the external wall to the outer side of the external wall, wherein the plug-seam filling layer penetrates through the screw holes in the external wall, and the PVC pipe 2 is arranged in the screw holes. The crack filling layer 3 adopts a special mortar pouring tool to extrude the micro-expansion crack-resistant waterproof crack filling mortar into the PVC pipe 2 to be in a filling state, and then the contraction surface is flush with the outer wall surface of the outer wall; the flexible waterproof layer 4 is coated on the outer surface of the filling layer 3 of the filling seam by adopting polymer cement waterproof paint to cover the whole screw hole; the mortar protective layer 5 is protected outside the flexible waterproof layer 4 by adopting common plastering mortar. The outer wall screw hole and the outer wall concrete 1 form a whole, so that a gap between the outer wall screw hole and the outer wall concrete 1 is effectively avoided, the waterproof capacity of the screw hole is improved, the outer wall leakage risk is reduced, and the service life of a building is prolonged.

By implementing the technical scheme, the quality of the concrete 1 on the outer wall of the site and the size of the PVC pipe 2 used for the screw hole are confirmed before construction operation, and the pipe opening is cleaned in advance.

Furthermore, the crack filling layer 3 adopts a special mortar pouring tool to extrude the micro-expansion crack-resistant waterproof crack filling mortar for 20-30mm along the direction from the outer side of the outer wall to the inner side of the outer wall, and the contraction surface is flush with the outer wall surface of the outer wall after the crack filling layer is in the filling state. The special mortar filling tool is a stainless steel caulking gun capable of filling screw holes of external walls with different calibers, and can be selected according to the size of the PVC pipe 2.

Specifically, the micro-expansion anti-crack waterproof crack-plugging mortar is single-component cement-based mortar, and can be used after being added with water in proportion and uniformly stirred on site. The PVC pipe has certain rigidity and strength, can resist the pressure generated by the shrinkage of the outer wall concrete 1 of the PVC pipe 2 in the outer wall screw hole from deforming, and can form a whole with the PVC pipe 2 to achieve effective filling. The material contains anti-cracking fibers, so that the surface is not easy to crack after construction and leveling. Meanwhile, the 28d impervious pressure of the material per se can reach more than 1.5 MPa.

Furthermore, the flexible waterproof layer 4 is coated on the outer surface of the crack filling layer 3 by adopting a polymer cement waterproof coating to cover the whole outer wall screw hole.

Specifically, the polymer cement waterproof coating is a two-component polymer cement waterproof coating, can be used after being directly and uniformly stirred on site, and has the thickness of 1.5-2.0mm. The material has certain flexibility, the elongation at break is more than or equal to 80%, the material is coated on the outer surface of the crack filling layer 3, cracks caused by asynchronous deformation of three different materials such as a PVC pipe 2, crack filling mortar and outer wall concrete 1 in an outer wall screw hole can be effectively controlled, and the effect of complete plugging is achieved. And the material, the mortar for plugging the joint and the concrete belong to cement-based products, and the material has a good bonding effect.

Specifically, the covering of the whole outer wall screw hole means that the area coated by radiation from the center of the PVC pipe 2 on the flush surface of the outer wall screw hole and the outer wall concrete 1 to the periphery at least exceeds 3-5 times of the sectional area of the PVC pipe 2, so that the purpose of covering the whole outer wall screw hole is achieved.

Further, the mortar protection layer 5 is constructed and protected outside the flexible waterproof layer 4 by adopting common plastering mortar.

FIG. 2 shows the construction of a caulking filling layer; FIG. 3 shows that the construction of the filling layer of the filling seam is performed, and the construction of the flexible waterproof layer is not performed; FIG. 4 is that the construction of the flexible waterproof layer is carried out on the surface after the construction treatment of the filling layer of the filling seam, and the construction of the mortar protective layer is not carried out; fig. 5 shows that the mortar protection layer is constructed after the flexible waterproof layer is constructed.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides an anti waterproof construction that splits for shutoff outer wall screw hole, its characterized in that, includes PVC pipe, crack filling layer, flexible waterproof layer and mortar protective layer, the PVC pipe sets up in the screw hole, the crack filling layer is rolled up with outer wall outside wall face after extrudeing to sufficient state to PVC intraductal, flexible waterproof layer applies paint with a brush at crack filling layer surface, covers whole screw hole, the mortar protective layer covers at flexible waterproof layer surface.

2. The anti-cracking waterproof structure for plugging screw holes in external walls according to claim 1, wherein the crack filling layer adopts micro-expansion anti-cracking waterproof crack filling mortar, and the micro-expansion anti-cracking waterproof crack filling mortar is single-component cement-based mortar.

3. The anti-cracking waterproof structure for plugging screw holes in exterior walls according to claim 1, wherein the flexible waterproof layer is made of polymer cement waterproof paint.

4. The crack-resistant and waterproof structure for plugging a screw hole in an exterior wall according to claim 3, wherein the polymer cement waterproof coating is a two-component polymer cement waterproof coating with a thickness of 1.5-2.0mm.

5. The anti-cracking waterproof structure for plugging screw holes in exterior walls according to claim 1, wherein the mortar protective layer is made of common plastering mortar with a thickness of 3-5 mm.