CN110863667A - Anti-seepage plugging structure and method for concrete shear wall screw hole - Google Patents
Anti-seepage plugging structure and method for concrete shear wall screw hole Download PDFInfo
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- CN110863667A CN110863667A CN201911048614.6A CN201911048614A CN110863667A CN 110863667 A CN110863667 A CN 110863667A CN 201911048614 A CN201911048614 A CN 201911048614A CN 110863667 A CN110863667 A CN 110863667A
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- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- 229920002635 polyurethane Polymers 0.000 claims abstract description 16
- 239000004814 polyurethane Substances 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims abstract description 11
- 239000011083 cement mortar Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011414 polymer cement Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 9
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000009527 percussion Methods 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims 4
- 230000000694 effects Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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- 239000004570 mortar (masonry) Substances 0.000 description 1
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- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
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- 238000011144 upstream manufacturing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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- Civil Engineering (AREA)
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Abstract
The invention discloses an anti-seepage blocking structure and method for a screw hole of a concrete shear wall, and belongs to the technical field of anti-seepage of concrete shear walls. The anti-seepage plugging structure comprises a polyurethane foaming agent arranged in the screw hole, asbestos cement arranged in the expansion hole, a waterproof material coated on the outer side of the wall body of the concrete shear wall and covering the asbestos cement, and dry and hard cement mortar filled in the screw hole on the inner side of the wall body of the concrete shear wall. According to the anti-seepage plugging structure and the anti-seepage plugging method, the expansion holes are formed, asbestos cement is arranged in the expansion holes for plugging, a polyurethane foaming agent is injected into the screw hole, and a waterproof material is coated on the outer side of the shear wall, so that the screw hole of the counter-pull screw forms a compact structure, and the purposes of preventing the screw hole from leaking and improving the engineering quality are achieved.
Description
Technical Field
The invention relates to an anti-seepage blocking structure and method for a screw hole of a concrete shear wall, and belongs to the technical field of anti-seepage of concrete shear walls.
Background
When a concrete shear wall is constructed, for parts with high waterproof requirements (particularly in underground structure construction), the shear wall templates usually adopt three-section type water stopping counter-pulling screw rods to fix the templates on two sides of the wall body so as to ensure the waterproof effect of the side edges of the bolts. As shown in fig. 1, a water stop steel plate 11 is arranged on a counter-pull screw 10 in the shear wall, and threaded sleeves 12 are arranged at two ends of the counter-pull screw. However, the split screws are easy to loosen during construction, so that a gap is formed between the split screws and the concrete of the shear wall, and therefore screw holes penetrating through the whole wall body can be left in the shear wall after the concrete is poured and the wall body formwork is removed. Under the influence of various adverse conditions such as the middle water-stopping steel plate of the three-section type water-stopping counter-pull screw is not fully welded, and the welding point has sand holes, the gap between the concrete in the screw hole and the counter-pull screw is easy to cause leakage. When a gap appears between the tension screw and the shear wall, common waterproof mortar is used for plugging, or foaming agent is simply used for plugging, so that the anti-seepage effect is poor, and the normal use of the building can be influenced. Therefore, it is necessary to provide an anti-seepage blocking structure and method for a screw hole of a concrete shear wall.
Disclosure of Invention
The anti-seepage blocking structure and method for the screw hole of the concrete shear wall can solve the problem of water seepage of the screw hole of the existing split bolt, so that the aims of preventing the screw hole from leaking and improving the engineering quality are fulfilled.
In order to solve the technical problems, the invention comprises the following technical scheme:
an anti-seepage plugging structure for a screw hole of a concrete shear wall is characterized in that a screw hole is formed between the concrete shear wall and a split bolt, and an expansion hole is formed at the end part of the split bolt on the outer side of the wall body of the concrete shear wall along the periphery of the split bolt;
the anti-seepage plugging structure comprises a polyurethane foaming agent arranged in the screw hole, asbestos cement arranged in the expansion hole, a waterproof material coated on the outer side of the wall body of the concrete shear wall and covering the asbestos cement, and dry and hard cement mortar filled in the screw hole on the inner side of the wall body of the concrete shear wall.
Further, the waterproof material is a polymer cement waterproof coating.
Furthermore, the painting range of the polymer cement waterproof coating is a range which takes the center of a screw hole as a circle center and has the diameter not less than 100 mm.
Further, the depth of the expansion hole is not less than 20mm, and the diameter is not less than 30 mm.
Furthermore, the asbestos cement blocking depth is 40-60 mm.
According to the seepage-proofing plugging structure for the concrete shear wall screw hole, the seepage-proofing plugging structure for plugging the screw hole is formed by the waterproof material, the asbestos cement, the polyurethane foaming agent and the dry and hard cement mortar which are arranged from outside to inside, the problem of leakage of the screw hole can be effectively solved by applying the structure in construction, the seepage-proofing effect is good, the quality of the concrete shear wall is improved, and the seepage-proofing plugging structure has the advantages of being simple in structure, easy to operate and high in construction speed.
Correspondingly, the invention also provides an anti-seepage plugging method for the screw hole of the concrete shear wall, which comprises the following steps:
the method comprises the following steps that firstly, whether a screw hole needing to be blocked exists between a split bolt and a concrete shear wall or not is checked, and when a plastic cushion block is arranged at the end part of the split bolt, the plastic cushion block is removed to form an expansion hole on a wall body on the outer side of concrete; when the end part of the counter-pull screw rod is not provided with the plastic cushion block, reaming is carried out on the outer side of the wall body by using a percussion drill by taking the counter-pull screw rod as a center to form an expanded hole, the PVC pipe in the expanded hole is removed, and impurities in the hole are cleaned;
step two, cleaning up the concrete garbage at the end part of the hole of the screw by using a steel wire brush, and spraying water for wetting after cleaning;
step three, injecting asbestos cement into the expanded holes for blocking, and extruding and compacting the asbestos cement in layers;
injecting a polyurethane foaming agent into the screw hole from the inner side of the wall body of the concrete shear wall, fully filling the screw hole, or filling the polyurethane foaming agent to a position 20-30 mm away from the inner side of the wall body, and after the foaming agent is dried and hardened, finishing plugging of the rest part by using dry and hard cement mortar;
and fifthly, coating waterproof materials on the outer side of the wall body of the concrete shear wall, and covering asbestos cement.
Further, the waterproof material is a polymer cement waterproof coating.
Furthermore, the painting range of the polymer cement waterproof coating is a range which takes the center of a screw hole as a circle center and has the diameter not less than 100 mm.
Further, the depth of the expansion hole is not less than 20mm, and the diameter is not less than 30 mm.
Furthermore, the asbestos cement blocking depth is 40-60 mm.
According to the seepage-proofing plugging method for the screw hole of the concrete shear wall, the expansion hole is formed, asbestos cement is arranged in the expansion hole for plugging, the polyurethane foaming agent is injected into the screw hole, and the waterproof material is coated on the outer side of the shear wall, so that the screw hole of the counter-pulling screw forms a compact structure, and the purposes of preventing the screw hole from leaking and improving the engineering quality are achieved.
Drawings
Fig. 1 is a schematic structural view of a shear wall adopting a three-section water stop counter-pulling screw rod in the prior art.
Fig. 2 is a schematic structural diagram of an anti-seepage plugging structure of a screw hole of a concrete shear wall.
The numbers in the figures are as follows:
1-the outer side of the wall body; 2-the inner side of the wall body; 3-asbestos cement; 4-a polyurethane foaming agent; 5-hard cement mortar; 6-waterproof material;
10-oppositely pulling screw rods; 11-water stop steel plate; 12-threaded bushing.
Detailed Description
The present invention provides a concrete shear wall screw hole anti-seepage plugging structure and method, which are further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent in conjunction with the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example one
In the construction, adopt syllogic stagnant water to drawing screw rod fixed die plate when the shear force wall is pour, be provided with stagnant water structure on drawing the screw rod, the detachable reuse of screw rod of the outer both sides of wall body, demolish the opposite drawing screw rod of tip after the template is demolishd. In this embodiment, a screw hole is formed between the concrete shear wall and the split bolt, the screw hole includes a gap between the screw and the concrete shear wall and even a through hole, an expansion hole is formed in the outer side 1 of the wall of the concrete shear wall along the periphery of the split bolt, and the outer side 1 of the wall of the shear wall refers to the upstream side of the wall. It should be noted that, in order to more clearly show the components of the anti-seepage blocking structure, the counter-pulling screw rod in the wall body is not shown in fig. 2.
As shown in fig. 2, the embodiment provides an anti-seepage plugging structure for a screw hole of a concrete shear wall, which includes a polyurethane foaming agent 4 disposed in the screw hole, asbestos cement 3 disposed in an expanded hole, a waterproof material 6 coated on the outer wall 1 of the concrete shear wall and covering the asbestos cement 3, and dry cement mortar 5 filled in the screw hole of the inner wall 2 of the concrete shear wall.
The seepage-proofing plugging structure for the concrete shear wall screw hole provided by the embodiment forms the seepage-proofing plugging structure for plugging the screw hole through the waterproof material 6, the asbestos cement 3, the polyurethane foaming agent 4 and the dry and hard cement mortar 5 which are arranged from outside to inside, can effectively solve the problem of leakage of the screw hole by applying the structure in construction, has good seepage-proofing effect, improves the quality of the concrete shear wall, and has the advantages of simple structure, easiness in operation and high construction speed.
In a preferred embodiment, the waterproof material 6 is a polymer cement waterproof coating. The polymer cement waterproof paint is also called JS waterproof paint, which is a two-component and water-based building waterproof paint prepared by reasonably proportioning and compounding organic liquid materials composed of polymer emulsion such as polyacrylate emulsion, ethylene-vinyl acetate copolymer emulsion and the like and various additives, and inorganic powder materials composed of inorganic fillers such as cement, quartz sand, light and heavy calcium carbonate and the like and various additives. The JS waterproof paint is a green environment-friendly material, has the advantages of no environmental pollution, stable performance, excellent aging resistance, long waterproof life and strong adhesive force, is safe to use and convenient to construct, and has better adhesive property on most materials; the material has good elasticity and elongation rate of 200 percent, so the cracking resistance, the freezing resistance and the low-temperature flexibility are excellent; the workability is good, no bubble is generated, the film forming effect is good, and the curing is fast; the construction is simple, and the brush coating, the roller coating, the spray coating and the scraping coating can be carried out.
In order to achieve a better anti-seepage plugging effect, the depth of the expansion hole is not less than 20mm, and the diameter is not less than 30 mm. And preferably, the blocking depth of the asbestos cement 3 is 40-60 mm. Preferably, the painting range of the polymer cement waterproof coating is a range which takes the center of a screw hole as a circle center and has a diameter not less than 100 mm.
Example two
The embodiment discloses an anti-seepage plugging method for a concrete shear wall screw hole, which is further described with reference to fig. 2. The anti-seepage plugging method comprises the following steps:
the method comprises the following steps that firstly, whether a screw hole needing to be blocked exists between a split bolt and a concrete shear wall or not is checked, and when a plastic cushion block is arranged at the end part of the split bolt, the plastic cushion block is removed to form an expansion hole on a wall body on the outer side of concrete; when the end part of the counter-pull screw rod is not provided with the plastic cushion block, expanding a hole on the outer side 1 of the wall body by using a percussion drill by taking the counter-pull screw rod as a center to form an expanded hole, removing the PVC pipe in the expanded hole, and cleaning up impurities in the hole;
in order to achieve a better anti-seepage effect, the depth of the expanded hole is not less than 20mm, and the diameter is not less than 30 mm;
step two, cleaning up the concrete garbage at the end part of the hole of the screw by using a steel wire brush, and spraying water for wetting after cleaning;
step three, injecting asbestos cement 3 into the expanded holes for blocking, and extruding and compacting the asbestos cement 3 in a layering manner; in order to achieve a good anti-seepage effect, the preferred asbestos cement 3 is 40-60 mm in plugging depth;
step four, injecting a polyurethane foaming agent 4 into the screw hole from the inner side 2 of the wall body of the concrete shear wall, fully drilling the screw hole, or filling the polyurethane foaming agent 4 to a position 20-30 mm away from the inner side of the wall body, and after the foaming agent is dried and hardened, finishing plugging of the rest part by using dry and hard cement mortar 5;
and fifthly, painting polymer cement waterproof paint on the outer side 1 of the wall body of the concrete shear wall, and covering asbestos cement 3. In order to achieve a better anti-seepage plugging effect, the painting range of the polymer cement waterproof coating is a range which takes the center of a screw hole as a circle center and has the diameter of not less than 100 mm.
According to the seepage-proofing plugging method for the screw hole of the concrete shear wall, the expansion hole is formed, the asbestos cement 3 is arranged in the expansion hole for plugging, the polyurethane foaming agent 4 is injected into the screw hole, and the waterproof material 6 is coated on the outer side of the shear wall, so that the screw hole of the counter-pulling screw forms a compact structure, and the purposes of preventing the screw hole from leaking and improving the engineering quality are achieved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An anti-seepage plugging structure for a screw hole of a concrete shear wall is characterized in that a screw hole is formed between the concrete shear wall and a split bolt, and an expansion hole is formed at the end part of the split bolt on the outer side of the wall body of the concrete shear wall along the periphery of the split bolt;
the anti-seepage plugging structure comprises a polyurethane foaming agent arranged in the screw hole, asbestos cement arranged in the expansion hole, a waterproof material coated on the outer side of the wall body of the concrete shear wall and covering the asbestos cement, and dry and hard cement mortar filled in the screw hole on the inner side of the wall body of the concrete shear wall.
2. The impermeable containment structure according to claim 1, wherein the waterproofing material is a polymer cement waterproofing paint.
3. The impermeable plugging structure of claim 2 wherein the range of painting the polymer cement waterproof coating is within 100mm of the diameter of the screw hole with the center of the screw hole as the center.
4. The impermeable closure structure of claim 1, wherein the expanded cavities have a depth of not less than 20mm and a diameter of not less than 30 mm.
5. The impermeable plugging structure of claim 1, wherein the asbestos cement plug has a plug depth of 40-60 mm.
6. An anti-seepage plugging method for a concrete shear wall screw hole is characterized by comprising the following steps:
the method comprises the following steps that firstly, whether a screw hole needing to be blocked exists between a split bolt and a concrete shear wall or not is checked, and when a plastic cushion block is arranged at the end part of the split bolt, the plastic cushion block is removed to form an expansion hole on a wall body on the outer side of concrete; when the end part of the counter-pull screw rod is not provided with the plastic cushion block, reaming is carried out on the outer side of the wall body by using a percussion drill by taking the counter-pull screw rod as a center to form an expanded hole, the PVC pipe in the expanded hole is removed, and impurities in the hole are cleaned;
step two, cleaning up the concrete garbage at the end part of the hole of the screw by using a steel wire brush, and spraying water for wetting after cleaning;
step three, injecting asbestos cement into the expanded holes for blocking, and extruding and compacting the asbestos cement in layers;
injecting a polyurethane foaming agent into the screw hole from the inner side of the wall body of the concrete shear wall, fully filling the screw hole, or filling the polyurethane foaming agent to a position 20-30 mm away from the inner side of the wall body, and after the foaming agent is dried and hardened, finishing plugging of the rest part by using dry and hard cement mortar;
and fifthly, coating waterproof materials on the outer side of the wall body of the concrete shear wall, and covering asbestos cement.
7. The impermeable plugging method of claim 6, wherein the waterproofing material is a polymer cement waterproofing paint.
8. The impermeable plugging structure of claim 7 wherein the range of painting the polymer cement waterproof coating is within 100mm of the diameter of the screw hole by taking the center of the screw hole as a circle center.
9. The impermeable closure structure of claim 6, wherein the expanded cavities have a depth of not less than 20mm and a diameter of not less than 30 mm.
10. The impermeable plugging structure of claim 6, wherein the asbestos cement plug has a plug depth of 40-60 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911048614.6A CN110863667A (en) | 2019-10-31 | 2019-10-31 | Anti-seepage plugging structure and method for concrete shear wall screw hole |
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| CN201911048614.6A CN110863667A (en) | 2019-10-31 | 2019-10-31 | Anti-seepage plugging structure and method for concrete shear wall screw hole |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350294A (en) * | 2020-03-19 | 2020-06-30 | 中国十七冶集团有限公司 | Shear wall outer wall through-wall screw hole plugging device and construction method thereof |
| CN111779145A (en) * | 2020-07-22 | 2020-10-16 | 中建八局第四建设有限公司 | Construction method for plugging split bolt holes |
| CN111910944A (en) * | 2020-07-20 | 2020-11-10 | 中铁十六局集团有限公司 | Bolt hole plugging method |
| CN112502463A (en) * | 2020-11-09 | 2021-03-16 | 北京市建筑装饰设计工程有限公司 | Outer wall screw rod plugging structure and construction method thereof |
| CN113175109A (en) * | 2021-04-27 | 2021-07-27 | 上海宝冶集团有限公司 | Plugging method of through-wall hole |
| CN113668899A (en) * | 2021-09-27 | 2021-11-19 | 贵州建工集团第一建筑工程有限责任公司 | Construction method for plugging concrete outer wall hole |
| CN113737969A (en) * | 2021-09-02 | 2021-12-03 | 三维建设工程咨询有限公司 | Wall split bolt hole plugging method |
| CN114109064A (en) * | 2021-11-11 | 2022-03-01 | 贵州建工集团第一建筑工程有限责任公司 | Construction method for plugging screw hole of outer wall by polyurethane foaming agent |
| CN114591100A (en) * | 2022-02-28 | 2022-06-07 | 中冶南方城市建设工程技术有限公司 | Polymer mortar for plugging screw hole penetrating through outer wall and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113175109A (en) * | 2021-04-27 | 2021-07-27 | 上海宝冶集团有限公司 | Plugging method of through-wall hole |
| CN113737969A (en) * | 2021-09-02 | 2021-12-03 | 三维建设工程咨询有限公司 | Wall split bolt hole plugging method |
| CN113668899A (en) * | 2021-09-27 | 2021-11-19 | 贵州建工集团第一建筑工程有限责任公司 | Construction method for plugging concrete outer wall hole |
| CN114109064A (en) * | 2021-11-11 | 2022-03-01 | 贵州建工集团第一建筑工程有限责任公司 | Construction method for plugging screw hole of outer wall by polyurethane foaming agent |
| CN114591100A (en) * | 2022-02-28 | 2022-06-07 | 中冶南方城市建设工程技术有限公司 | Polymer mortar for plugging screw hole penetrating through outer wall and construction method |
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