CN112252462A - Construction method of concrete roof layer waterproof structure - Google Patents
Construction method of concrete roof layer waterproof structure Download PDFInfo
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- CN112252462A CN112252462A CN202011179422.1A CN202011179422A CN112252462A CN 112252462 A CN112252462 A CN 112252462A CN 202011179422 A CN202011179422 A CN 202011179422A CN 112252462 A CN112252462 A CN 112252462A
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- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 111
- 239000000463 material Substances 0.000 claims abstract description 61
- 239000010426 asphalt Substances 0.000 claims abstract description 46
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 239000011241 protective layer Substances 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000004746 geotextile Substances 0.000 claims abstract description 14
- 239000003208 petroleum Substances 0.000 claims abstract description 13
- 239000011247 coating layer Substances 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims abstract description 8
- 239000011083 cement mortar Substances 0.000 claims abstract description 7
- 239000002689 soil Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 10
- 239000013521 mastic Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000004078 waterproofing Methods 0.000 abstract description 9
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010422 painting Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 10
- 239000012528 membrane Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a construction method of a concrete roof layer waterproof structure, belongs to the field of building construction, and provides a construction method of a concrete roof layer waterproof structure convenient for construction, which comprises the following specific steps: cleaning an upper surface basal plane of the concrete top slab layer; plastering cement mortar with the thickness of 20mm and the thickness of 1:3 above the concrete top plate layer for leveling; paving and sticking the SBS modified asphalt waterproof coiled material by a hot melting method; a layer of petroleum asphalt felt is point-bonded above the waterproof coiled material; pouring a concrete protective layer above the petroleum asphalt felt; laying a drainage plate above the concrete protective layer; laying geotextile above the drainage plate, and laying planting soil above the geotextile; coating a polymer waterproof coating layer on the lower surface of the concrete roof layer; and painting a paint layer on the lower surface of the polymer waterproof coating layer. The invention provides two barriers for waterproofing of the concrete roof layer, reduces the risk of water seepage of the basement, reduces the times of repair in the future, saves the manufacturing cost, and has good waterproof performance and convenient construction.
Description
Technical Field
The invention relates to the field of building construction, in particular to a construction method of a concrete roof layer waterproof structure.
Background
With the development of economy and the acceleration of urbanization process, the utilization rate of urban underground space is continuously improved, and the development and utilization of building underground space are favored. The envelope structure of the basement is often eroded by underground water, thereby affecting the use function and the service life of the building; in order to ensure that the basement has a good service environment and prolong the service life of the basement, corresponding moisture-proof and waterproof measures need to be taken for the design of the basement. Meanwhile, the waterproof structure should improve the practical problem under the condition of technically feasible and guaranteed quality according to the specific conditions and requirements of the project.
The patent of the invention with the publication number of CN 211057875U discloses a basement bottom plate waterproof structure, which is characterized in that a high polymer protective drainage special-shaped piece self-adhesive geotextile, a first leveling layer, a basement waterproof concrete bottom plate, a high polymer waterproof layer, a second leveling layer, a concrete base layer and a gravel cushion layer are sequentially arranged from the surface layer to the bottom. This document has only one waterproof construction for the roof of the panel, which presents a risk of leakage after long-term use.
Therefore, how to improve the waterproof capability of the concrete roof layer is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a construction method of a concrete roof layer waterproof structure convenient for construction.
The technical scheme adopted by the invention for solving the technical problems is as follows: the construction method of the concrete roof layer waterproof structure comprises the concrete roof layer and further comprises the following steps:
step 1, cleaning an upper surface base surface of a concrete top slab layer to keep the upper surface base surface moist, clean, flat and firm; repairing the damaged and uneven upper surface base plane, and grinding concrete burrs at the male and female corners;
step 2, plastering cement mortar to the corner part, the male corner part, the female corner part and the part penetrating out of the component to form an arc corner structure, wherein the minimum radius of the female corner in the arc corner structure is 50mm, and the minimum radius of the male corner in the arc corner structure is 20 mm;
and 3, smearing cement with the thickness of 20mm above the concrete top plate layer: leveling by cement mortar with the volume ratio of sand being 1:3, and forming a mortar leveling layer; then coating an interface treating agent;
step 4, paving and attaching an additional corner layer, wherein the additional corner layer is an SBS modified asphalt waterproof coiled material, the width of the additional corner layer is 500mm, and each side of a male corner and a female corner is 250 mm;
step 5, paving and sticking the SBS modified asphalt waterproof coiled material by a hot melting method, wherein molten modified asphalt mastic overflows from the seam of the waterproof coiled material, the width of the overflowing modified asphalt mastic is 2mm, the overflowing modified asphalt mastic is uniform and straight, and the lap joint width of the long side and the short side of the waterproof coiled material is 100 mm;
step 6, sticking a layer of petroleum asphalt felt on the waterproof coiled material;
step 7, pouring a concrete protective layer of C20 fine stones with the thickness of 60-80mm above the petroleum asphalt felt;
step 8, paving a drainage plate above the concrete protective layer, and sealing the joint of the drainage plate by adopting sealing paste; step 9, laying geotextile above the drainage plate, and laying planting soil above the geotextile;
step 10, coating a polymer waterproof coating layer on the lower surface of the concrete roof layer;
and 11, coating a paint layer on the lower surface of the polymer waterproof coating layer.
Further, the method comprises the following steps: in step 5, the waterproof roll comprises a first waterproof roll positioned on the lower layer and a second waterproof roll positioned on the upper layer; the first waterproof coiled material is provided with two layers, wherein one layer is a SBS modified asphalt waterproof coiled material with the thickness of 3mm, and the other layer is a SBS modified asphalt waterproof coiled material with the thickness of 4 mm; the second waterproof coiled material is a SBS modified asphalt root-resistant waterproof coiled material with the thickness of 34 mm.
Further, the method comprises the following steps: in step 10, the polymer waterproof coating is coated with a layer in both longitudinal and transverse directions.
Further, the method comprises the following steps: the interface treating agent is cold bottom oil.
The concrete roof layer waterproof structure comprises a concrete roof layer, a mortar leveling layer is arranged above the concrete roof layer, a first waterproof coiled material is arranged above the mortar leveling layer, a second waterproof coiled material resistant to puncture is arranged above the first waterproof coiled material, a petroleum asphalt felt is arranged above the second waterproof coiled material, a concrete protective layer is arranged above the petroleum asphalt felt, a plastic drainage plate is arranged above the concrete protective layer, geotextile is arranged above the plastic drainage plate, planting soil is arranged above the geotextile, a polymer waterproof coating layer is painted on the lower surface of the concrete roof layer, and a paint layer is painted on the lower surface of the polymer waterproof coating.
Further, the method comprises the following steps: the plastic drainage plate is of a dentate structure, and concave-convex gaps in the plastic drainage plate are filled up by a concrete protective layer.
Further, the method comprises the following steps: the first waterproof coiled material is provided with two layers, wherein one layer is a SBS modified asphalt waterproof coiled material with the thickness of 3mm, and the other layer is a SBS modified asphalt waterproof coiled material with the thickness of 4 mm; wherein the lapping width of the waterproof coiled material is 100 mm.
Further, the method comprises the following steps: the second waterproof coiled material is a SBS modified asphalt root-resistant waterproof coiled material with the thickness of 4 mm; wherein the lapping width of the waterproof coiled material is 100 mm.
Further, the method comprises the following steps: the concrete protective layer is a C20 fine aggregate concrete protective layer, and the thickness of the concrete protective layer is 60-80 mm.
Further, the method comprises the following steps: the polymer waterproof paint is coated with a layer in the longitudinal direction and the transverse direction respectively.
Further, the method comprises the following steps: the thickness of the mortar leveling layer is 20 mm.
The invention has the beneficial effects that: according to the method, through two waterproof structures which are adopted on the upper part and the lower part of the plate, the upper part of the plate is waterproof by a coiled material, and the lower part of the plate is waterproof by a coating, the problem of water channeling and water seepage existing in the waterproof process of a single coiled material is solved through an up-down comprehensive prevention and control mode; the waterproof concrete roof layer has the advantages that two barriers are provided for waterproofing of the concrete roof layer, the risk of water seepage of the basement is reduced, the number of times of repairing in future is reduced, the manufacturing cost is saved, the waterproof performance is good, and the construction is convenient.
Drawings
Fig. 1 is a layer structure view of a waterproof structure of a concrete roof layer according to the present invention;
labeled as: the concrete roof plate comprises a concrete roof plate layer 1, a mortar leveling layer 2, a first waterproof coiled material 3, a second waterproof coiled material 4, a petroleum asphalt felt 5, a concrete protective layer 6, a plastic drainage plate 7, geotextile 8, planting soil 9, a polymer waterproof coating layer 10 and a paint layer 11.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
It should be noted that, if there are directional indication terms, such as the terms of direction and orientation, above, below, left, right, front and back, in the present invention, for facilitating the description of the relative positional relationship between the components, the absolute position that is not the positional relationship between the related components and the components is specifically referred to, and is only used for explaining the relative positional relationship and the motion situation between the components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly. When the present invention relates to a number, such as "a plurality", "several", etc., two or more than two are specifically referred to.
As shown in fig. 1, the construction method of the concrete roof layer waterproof structure according to the present invention includes a concrete roof layer 1, and further includes the following steps:
step 1, cleaning an upper surface base surface of a concrete top slab layer 1 to keep the upper surface base surface moist, clean, flat and firm; repairing the damaged and uneven upper surface base plane, and grinding concrete burrs at the male and female corners;
step 2, plastering cement mortar to the corner part, the male corner part, the female corner part and the part penetrating out of the component to form an arc corner structure, wherein the minimum radius of the female corner in the arc corner structure is 50mm, and the minimum radius of the male corner in the arc corner structure is 20 mm;
step 3, then smearing cement with the thickness of 20mm above the concrete top slab layer 1: leveling by cement mortar with the volume ratio of sand being 1:3, and forming a mortar leveling layer 2; then coating an interface treating agent; wherein the interface treating agent is cold bottom oil; the cold bottom oil is a product obtained by diluting asphalt with a diluent, such as gasoline, diesel oil, kerosene, benzene and the like, is brushed on the base surface of concrete, mortar, wood and the like, can quickly permeate into pores of the base layer, and is firmly combined with the base surface after the solvent is volatilized;
step 4, paving and attaching an additional corner layer, wherein the additional corner layer is an SBS modified asphalt waterproof coiled material, the width of the additional corner layer is 500mm, and each side of a male corner and a female corner is 250 mm; the corner additional layer and the SBS modified asphalt waterproof roll in the subsequent step 5 are made of the same material and are used for improving the laying effect of the corresponding corner position;
step 5, paving and sticking the SBS modified asphalt waterproof coiled material by a hot melting method, wherein molten modified asphalt mastic overflows from the seam of the waterproof coiled material, the width of the overflowing modified asphalt mastic is 2mm, the overflowing modified asphalt mastic is uniform and straight, and the lap joint width of the long side and the short side of the waterproof coiled material is 100 mm;
step 6, a layer of petroleum asphalt felt 5 is point-bonded above the waterproof coiled material;
7, pouring a concrete protective layer 6 of C20 fine stones with the thickness of 60-80mm above the petroleum asphalt felt 5;
step 8, paving a drainage plate 7 above the concrete protective layer 6, and sealing the joint of the drainage plate 7 by adopting sealing paste;
step 9, paving geotextile 8 above the drainage plate 7, and paving planting soil 9 above the geotextile 8;
step 10, coating a polymer waterproof coating layer 10 on the lower surface of the concrete roof slab layer 1;
and 11, coating a paint layer 11 on the lower surface of the polymer waterproof coating layer 10.
More specifically, in step 5, the waterproofing membrane comprises a first waterproofing membrane 3 positioned on the lower layer and a second waterproofing membrane 4 positioned on the upper layer; the first waterproof roll 3 can be further provided with two layers, wherein one layer is a SBS modified asphalt waterproof roll with the thickness of 3mm, and the other layer is a SBS modified asphalt waterproof roll with the thickness of 4 mm; and the second waterproof coiled material 4 is a SBS modified asphalt root-resistant waterproof coiled material with the thickness of 34 mm.
More specifically, in step 10, the polymer waterproof coating 10 is coated in two layers in the longitudinal and transverse directions.
In addition, the corresponding concrete roof layer waterproof structure can be built through the construction method, and comprises a concrete roof layer 1, wherein a mortar leveling layer 2 is arranged above the concrete roof layer 1, a first waterproof coiled material 3 is arranged above the mortar leveling layer 2, a second waterproof coiled material 4 resistant to puncture is arranged above the first waterproof coiled material 3, a petroleum asphalt felt 5 is arranged above the second waterproof coiled material 4, a concrete protective layer 6 is arranged above the petroleum asphalt felt 5, a plastic drainage plate 7 is arranged above the concrete protective layer 6, a geotextile 8 is arranged above the plastic drainage plate 7, planting soil 9 is arranged above the geotextile 8, a polymer waterproof coating layer 10 is painted on the lower surface of the concrete roof layer 1, and a paint layer 11 is painted on the lower surface of the polymer waterproof coating 10.
Wherein, concrete roof slab 1 is the concrete placement layer of vibration compaction, and the upper portion forms the waterproof construction in board upper portion through setting up corresponding waterproofing membrane isotructure, and forms the waterproof construction in board lower part through scribbling polymer waterproof coating layer 10 isotructure below the board. Therefore, the problem of water channeling and water seepage existing in the water prevention of a single coiled material is solved by a vertical comprehensive prevention and control mode; the waterproof concrete roof layer has the advantages that two barriers are provided for waterproofing of the concrete roof layer, the risk of water seepage of the basement is reduced, the number of times of repairing in future is reduced, the manufacturing cost is saved, the waterproof performance is good, and the construction is convenient.
More specifically, the plastic drainage plate 7 is preferably provided with a toothed structure, so that the structural strength of the plastic drainage plate can be improved; and the concave-convex voids in the plastic drain board 7 can be further filled with the concrete protective layer 6.
More specifically, the first waterproof roll 3 may preferably be provided with two layers, wherein one layer is a SBS modified asphalt waterproof roll with a thickness of 3mm, and may be provided at a lower layer; the other layer is a SBS modified asphalt waterproof coiled material with the thickness of 4mm and can be arranged as an upper layer. Of course, each layer of waterproof coiled material is generally formed by splicing a plurality of coiled materials in the construction process, and the lap joint width of the waterproof coiled material is not less than 100mm, preferably 100mm when the waterproof coiled material is spliced.
More specifically, the second waterproof roll 4 is preferably set to be a 4mm thick SBS modified asphalt root-piercing resistant waterproof roll; can effectively play a role of preventing root stabs. Of course, without loss of generality, the lapping width of the waterproofing membrane in the second waterproofing membrane 4 should also be not less than 100mm, preferably 100 mm.
More specifically, the concrete protective layer 6 in the present invention may be provided as a C20 fine aggregate concrete protective layer, that is, formed by pouring C20 type fine aggregate concrete; more preferably, the thickness of the concrete layer can be set to be 60-80mm, such as 70mm later.
More specifically, in order to improve the waterproof effect of the polymer waterproof coating material 10, the polymer waterproof coating material 10 of the present invention may be coated in one layer in both longitudinal and transverse directions. Thus, on the one hand, two layers of the polymer waterproof coating material 10 can be formed to improve the waterproof effect; on the other hand, the waterproof effect can be further improved with respect to a single painting direction by two painting directions substantially in the vertical and horizontal vertical directions.
Claims (4)
1. The construction method of the concrete roof layer waterproof structure is characterized by comprising the following steps of: the concrete roof slab comprises a concrete roof slab layer (1) and further comprises the following steps:
step 1, cleaning an upper surface base surface of the concrete top slab layer (1) to keep the upper surface base surface moist, clean, flat and firm; repairing the damaged and uneven upper surface base plane, and grinding concrete burrs at the male and female corners;
step 2, plastering cement mortar to the corner part, the male corner part, the female corner part and the part penetrating out of the component to form an arc corner structure, wherein the minimum radius of the female corner in the arc corner structure is 50mm, and the minimum radius of the male corner in the arc corner structure is 20 mm;
step 3, then smearing cement with the thickness of 20mm above the concrete top slab layer (1): leveling by cement mortar with the volume ratio of sand being 1:3, and forming a mortar leveling layer (2); then coating an interface treating agent;
step 4, paving and attaching an additional corner layer, wherein the additional corner layer is an SBS modified asphalt waterproof coiled material, the width of the additional corner layer is 500mm, and each side of a male corner and a female corner is 250 mm;
step 5, paving and sticking the SBS modified asphalt waterproof coiled material by a hot melting method, wherein molten modified asphalt mastic overflows from the seam of the waterproof coiled material, the width of the overflowing modified asphalt mastic is 2mm, the overflowing modified asphalt mastic is uniform and straight, and the lap joint width of the long side and the short side of the waterproof coiled material is 100 mm;
step 6, a layer of petroleum asphalt felt (5) is glued on the waterproof coiled material;
7, pouring a concrete protective layer (6) of C20 fine stones with the thickness of 60-80mm above the petroleum asphalt felt (5);
step 8, paving a drainage plate (7) above the concrete protective layer (6), and sealing the joint of the drainage plate (7) by adopting sealing paste;
step 9, laying geotextile (8) above the drainage plate (7), and laying planting soil (9) above the geotextile (8);
step 10, coating a polymer waterproof coating layer (10) on the lower surface of the concrete roof slab layer (1);
and 11, coating a paint layer (11) on the lower surface of the polymer waterproof coating layer (10).
2. The method of constructing a waterproof structure for a concrete roof slab layer according to claim 1, wherein: in step 5, the waterproof coiled material comprises a first waterproof coiled material (3) positioned at the lower layer and a second waterproof coiled material (4) positioned at the upper layer; the first waterproof coiled material (3) is provided with two layers, wherein one layer is a SBS modified asphalt waterproof coiled material with the thickness of 3mm, and the other layer is a SBS modified asphalt waterproof coiled material with the thickness of 4 mm; and the second waterproof coiled material (4) is a SBS modified asphalt root-resistant waterproof coiled material with the thickness of 34 mm.
3. The method of constructing a waterproof structure for a concrete roof slab layer according to claim 1, wherein: in step 10, the polymer waterproof coating (10) is coated with a layer in both longitudinal and transverse directions.
4. A construction method of a waterproof structure of a concrete roof layer according to any one of claims 1 to 3, characterized in that: the interface treating agent is cold bottom oil.
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| CN202011179422.1A CN112252462A (en) | 2020-10-29 | 2020-10-29 | Construction method of concrete roof layer waterproof structure |
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| CN202011179422.1A CN112252462A (en) | 2020-10-29 | 2020-10-29 | Construction method of concrete roof layer waterproof structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113605471A (en) * | 2021-07-23 | 2021-11-05 | 中国水利水电第十六工程局有限公司 | Method for treating shallow cracks on concrete surface |
| CN113653292A (en) * | 2021-09-24 | 2021-11-16 | 海南省建筑产业化股份有限公司 | Assembled wall with window frame and construction method thereof |
| CN114382287A (en) * | 2022-02-21 | 2022-04-22 | 中国二十冶集团有限公司 | Basement roof waterproof construction method |
| CN114439159A (en) * | 2022-02-14 | 2022-05-06 | 安徽欣生防水工程有限公司 | Anti-seepage construction process for building |
| CN114525894A (en) * | 2022-01-28 | 2022-05-24 | 雨中情防水技术集团股份有限公司 | Orderly drainage system that prevents of roof is planted to building |
| CN114876075A (en) * | 2022-06-22 | 2022-08-09 | 北京崇建工程有限公司 | Water seepage prevention construction method for garage top plate |
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| CN114525894A (en) * | 2022-01-28 | 2022-05-24 | 雨中情防水技术集团股份有限公司 | Orderly drainage system that prevents of roof is planted to building |
| CN114525894B (en) * | 2022-01-28 | 2023-09-19 | 雨中情防水技术集团股份有限公司 | Orderly waterproof and drainage system for building planting roof |
| CN114439159A (en) * | 2022-02-14 | 2022-05-06 | 安徽欣生防水工程有限公司 | Anti-seepage construction process for building |
| CN114382287A (en) * | 2022-02-21 | 2022-04-22 | 中国二十冶集团有限公司 | Basement roof waterproof construction method |
| CN114876075A (en) * | 2022-06-22 | 2022-08-09 | 北京崇建工程有限公司 | Water seepage prevention construction method for garage top plate |
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Application publication date: 20210122 |
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