CN115492316A - Waterproof construction method and waterproof structure of pitched roof - Google Patents

Waterproof construction method and waterproof structure of pitched roof Download PDF

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Publication number
CN115492316A
CN115492316A CN202211312233.6A CN202211312233A CN115492316A CN 115492316 A CN115492316 A CN 115492316A CN 202211312233 A CN202211312233 A CN 202211312233A CN 115492316 A CN115492316 A CN 115492316A
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CN
China
Prior art keywords
layer
waterproof
roof
coating
slope
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Pending
Application number
CN202211312233.6A
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Chinese (zh)
Inventor
吴聪
魏鹏
张乐川
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China First Metallurgical Group Co Ltd
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China First Metallurgical Group Co Ltd
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Priority to CN202211312233.6A priority Critical patent/CN115492316A/en
Publication of CN115492316A publication Critical patent/CN115492316A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
    • E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/254—Roof garden systems; Roof coverings with high solar reflectance

Abstract

The invention provides a waterproof construction method of a sloping roof, which comprises the following steps: after the cast-in-place concrete structure layer is maintained, sequentially coating the polyurethane film waterproof material on the surface of the base layer of the concrete structure layer in multiple layers to form a waterproof coating layer; pouring fine stone concrete on the surface of the waterproof coating layer to form an isolation layer; laying an insulating layer above the isolating layer; pouring concrete above the heat-insulating layer to form a slope-finding layer, pouring mortar above the slope-finding layer to form a leveling layer, and constructing an improved asphalt waterproof coiled material to form a waterproof layer; and pouring premixed mortar above the waterproof layer to form a protective layer, and then laying the roof tile layer. The invention also provides a waterproof structure of the sloping roof. According to the waterproof construction method and the waterproof structure of the pitched roof, the waterproof coating and the waterproof roll are combined and constructed in a staggered manner, so that the problems of single waterproof method and poor durability of the traditional roof are solved, the integrity of the roof structure is improved, and the durability of water resistance and seepage prevention of the pitched roof is improved.

Description

Waterproof construction method and waterproof structure of pitched roof
Technical Field
The invention belongs to the technical field of roof waterproof construction, and particularly relates to a waterproof construction method of a sloping roof and a waterproof structure of the sloping roof.
Background
Along with the current economic development, the requirements of people on the comfort and the experience of the living environment are more and more strict, and the roof waterproof problem of the building also influences the experience of people on the living environment. Leakage prevention is the greatest concern in roofing engineering construction, and requires reasonable design and planning to maintain the integrity of the roof.
The building roof is mainly divided into a flat roof and a sloping roof, and for the sloping roof, the traditional waterproof method is generally single, mainly takes prevention as well as assisting in dredging. The common practice includes: double-layer waterproof rolls (such as self-adhesive waterproof rolls, SBS waterproof rolls and the like) are stacked together by a staggered paving process and are arranged above the leveling layer. Although the manufacturing cost is low, due to the fact that the functional materials are used periodically, the waterproof layer is of a single-layer structure isolated from other structures of the roof, once the waterproof roll is broken, roof leakage can occur directly, and the later maintenance is difficult and the maintenance cost is high.
Based on the method, the novel slope roof waterproof construction method and the novel slope roof waterproof structure are provided, the anti-seepage effect of the slope roof can be improved, the durability can be improved, the influence of roof seepage on the indoor environment can be effectively avoided, and the later maintenance cost of a house can be reduced.
Disclosure of Invention
The invention aims to provide a waterproof construction method for a sloping roof, which has the advantages of good anti-seepage effect, high durability and good integrity.
The invention also aims to provide the waterproof structure of the sloping roof, which has good anti-seepage effect, high durability and good integrity.
The technical scheme adopted by the invention for realizing one of the purposes is as follows: the waterproof construction method of the sloping roof comprises the following steps:
s1, after the cast-in-place concrete structure layer is maintained, leveling and cleaning the surface of the cast-in-place concrete structure layer, and sequentially brushing a polyurethane coating waterproof material on the surface of a base layer of the concrete structure layer in multiple layers to form a waterproof coating layer;
s2, pouring fine aggregate concrete on the surface of the waterproof coating layer to form an isolation layer; laying an insulating layer above the isolation layer;
s3, pouring concrete above the heat-insulating layer to form a slope layer, cleaning and wetting the surface of the slope layer, and pouring mortar above the slope layer to form a leveling layer;
s4, on the premise of ensuring that the lower base layer is fully dried, constructing an improved asphalt waterproof coiled material to form a waterproof layer;
and S5, pouring premixed mortar above the waterproof layer to form a protective layer, and then laying a roof tile layer to finish the construction of the waterproof structure of the sloping roof.
On the basis of the technical scheme, in the step S1, the polyurethane coating waterproof material is sequentially coated on the surface of the base layer in multiple layers, the blade coating directions of two adjacent layers are mutually vertical, and after the coating of the waterproof material on the top layer is finished, the stone slag with the particle size of 2-3 mm is thinly spread on the surface of the waterproof material on the top layer.
On the basis of the technical scheme, in the step S2, the thickness of the heat insulation layer is determined by the design slope of the roof, the water flowing direction and the trend of the roof slope.
On the basis of the technical scheme, in the step S4, the lap joint of the asphalt waterproof coiled material is heated by a spray gun to realize firm bonding, and the tail end closing part is tightly embedded and filled by sealing paste.
On the basis of the technical scheme, in the step S5, after the waterproof layer is constructed, a water spraying test is required, and the subsequent construction is carried out after the test is qualified.
The second technical scheme adopted for achieving the purpose of the invention is as follows: providing a slope roof waterproof structure based on the construction method, wherein the waterproof structure is arranged between a cast-in-place concrete structure layer and a roof tile layer; waterproof construction includes from bottom to top in proper order: waterproof coating layer, isolation layer, heat preservation, look for the slope layer, screed-coat, waterproof layer and protective layer.
On the basis of the technical scheme, the waterproof coating layer is formed by coating a polyurethane coating waterproof material and comprises a base coating layer, a middle coating layer and a top coating layer;
the base coating layer is coated on the surface of a base layer of the cast-in-place concrete structure layer; the middle coating layer is coated on the upper part of the substrate coating layer, and the top coating layer also comprises stone slag with the particle size of 2-3 mm.
On the basis of the technical scheme, the thickness of the isolation layer is 10-20 mm; the heat-insulating layer is made of hard foam polyurethane waterproof heat-insulating material, and the thickness of the heat-insulating layer is 40-50 mm.
On the basis of the technical scheme, the slope finding layer is formed by pouring fly ash ceramsite concrete, and the thickness of the slope finding layer is 30mm.
On the basis of the technical scheme, the leveling layer is formed by pouring cement mortar, and the thickness of the leveling layer is 20mm.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the waterproof construction method for the sloping roof, provided by the invention, through improvement and optimization of the construction process, the conditions of high difficulty and poor durability of roof waterproof construction are improved, the problems of single traditional roof waterproof method and poor durability are solved, and the influence of roof waterproof and seepage prevention is improved. According to the invention, the waterproof coating and the waterproof coiled material are combined and constructed in a staggered manner, so that the problem that two layers of the traditional waterproof coiled material are constructed simultaneously and the lapping quality is unstable is solved, the functional characteristics of the materials of the waterproof coating and the waterproof coiled material are brought into play, the integrity of a slope roof waterproof system is improved by combining a roof heat-insulating layer, and the durability of the slope roof in waterproof and seepage-proof is improved while the slope roof is waterproof and seepage-proof.
(2) The invention provides a novel waterproof structure aiming at the problems of large risk of roof waterproof leakage and high maintenance cost, and the novel waterproof structure is used for painting waterproof paint after the construction of a roof concrete structure layer is finished, so that the integrity of the structure layer and a waterproof layer is better facilitated. The invention combines the waterproof coating and the waterproof coiled material, utilizes the waterproof coiled material to carry out secondary anti-blocking on roof water, and effectively combines the heat-insulating layer and the isolating layer, so that the waterproof coating and the waterproof coiled material are constructed in a staggered way, the waterproof effect of the pitched roof is protected, and the waterproof and anti-seepage purposes of the pitched roof are also favorably ensured. The invention changes the traditional two-layer paving and pasting mode of the waterproof coiled material, reduces the difficulty of the waterproof construction lap joint of the pitched roof, ensures the lap joint quality of the waterproof coiled material and can better exert the material waterproof effect of the waterproof coating and the waterproof coiled material.
Drawings
FIG. 1 is a flow chart of a waterproof construction method for a sloping roof provided by the invention;
fig. 2 is a sectional view of a water-proof structure of a pitched roof provided by the present invention;
fig. 3 is a side view of a waterproof structure of a sloping roof provided by the present invention;
wherein, 1, a concrete structure layer is cast in situ; 2-a waterproof coating layer; 3-an isolation layer; 4-insulating layer; 5-finding a slope layer; 6-leveling layer; 7-waterproof layer; 8-a protective layer; 9-roofing tile layer.
Detailed Description
The technical solutions of the present invention will be described below clearly and completely in conjunction with the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1
Referring to fig. 1, the embodiment provides a waterproof construction method for a sloping roof, which includes the following steps:
step 1: after the cast-in-place concrete structure layer is maintained, the surface of the cast-in-place concrete structure layer is leveled and cleaned, and the polyurethane coating waterproof material is sequentially coated on the surface of the base layer of the concrete structure layer in multiple layers to form a waterproof coating layer;
and 2, step: pouring fine stone concrete on the surface of the waterproof coating layer to form an isolation layer; laying a heat insulation layer above the isolation layer;
and 3, step 3: pouring concrete above the heat-insulating layer to form a slope layer, cleaning and wetting the surface of the slope layer, and pouring mortar above the slope layer to form a leveling layer;
and 4, step 4: on the premise of ensuring the sufficient drying of the lower base layer, constructing an improved asphalt waterproof coiled material to form a waterproof layer;
and 5: and pouring premixed mortar above the waterproof layer to form a protective layer, and then laying a roof tile layer to finish the construction of the waterproof structure of the pitched roof.
In the construction method, the conventional construction process flow is changed, the waterproof coating and the waterproof layer are constructed in a staggered manner, so that the functions of all building materials are better exerted, and a more integral and systematic roof waterproof structure is formed through a multilayer waterproof structure. The invention mainly embodies the staggered construction of the waterproof functional layer in the following aspects:
firstly, the waterproof coating is smeared on a structural layer (reinforced concrete roof panel), and the waterproof coating is combined with the structural layer, so that the surface of the structural layer can be protected more comprehensively and uniformly. The damage to the waterproof coiled material caused by uneven pouring of the structural layer is avoided, the compactness of the waterproof coating in the structural layer can be exerted, the waterproof coating can be better combined with the structural layer, the problems of poor waterproof effect, damage of waterproof materials and the like are avoided, and the last waterproof layer of the pitched roof is formed by the process flow.
And secondly, the construction of an isolation layer is carried out after the waterproof paint is coated, the isolation layer is mainly used for isolating the waterproof paint and the materials on the isolation layer, the waterproof paint is protected, then the construction of a heat insulation layer is started, the heat insulation layer not only has the main function of energy saving and heat insulation on the roof, but also can play a role in stopping the leakage of the roof, and the waterproof and leakage-proof effects of a second layer are realized in a roof waterproof system.
And thirdly, finishing the construction of the heat-insulating layer, performing the technological processes of slope finding and leveling layer, and performing the construction of the waterproof coiled material in order to discharge the roof water better, wherein the waterproof coiled material has the waterproof and leak-proof effects of the first layer on the roof.
Under the combined action of the multilayer structures, a more complete and systematic waterproof structure whole of the roof is formed. In the integral waterproof structure, the functional layers are constructed in a staggered mode, stable lap joints are formed, the waterproof and seepage-proof durability of the sloping roof is improved while the waterproof and seepage-proof performance of the roof is improved, and the later maintenance cost of a house is effectively reduced.
Further, in the step 1, a structure of "structural layer-waterproof coating-isolation layer" is formed. After the construction of the cast-in-place concrete roof panel is completed, the surface of the structural laminate is coated with the waterproof coating, the waterproof coating is effectively combined with the structural layer, and the integrity of the waterproof coating and the structural layer is better exerted. Particularly, in the service cycle of concrete, the quality problems of settlement, cracking and the like can be caused by the influence of the external environment and the maintenance quality in the construction process, and the waterproof coating is coated on the cast-in-place concrete roof panel, so that the adverse influence of the quality problems of concrete surface cracking and the like on the waterproof effect can be inhibited. Further, the isolation layer is arranged above the waterproof coating, so that the waterproof coating can be protected.
Preferably, the polyurethane coating waterproof material is sequentially coated on the surface of the base layer in multiple layers, the coating directions of two adjacent layers are mutually vertical, and after the coating of the waterproof material on the top layer is finished, the stone slag with the particle size of 2-3 mm is thinly spread on the surface of the waterproof material on the top layer. In the embodiment, the number of the layers of the waterproof coating layer is three, after the second layer of coating film is cured, the coating material is stirred according to the material proportion of the previous two times, the third time of coating is carried out, and when the coating is not cured after the coating, clean stone slag with the particle size of phi 2-phi 3mm is scattered on the surface of the coating film, so that the bonding force between the stone slag and the cement mortar covering layer can be increased, and the integrity among the structural layer, the waterproof coating and the isolation layer is improved.
Furthermore, in the step 2, the thickness of the heat-insulating layer is determined by the design slope of the roof, the water flowing direction and the trend of the slope of the roof.
In this embodiment, the insulating layer 4 is made of a hard foam polyurethane waterproof insulating material, and the thickness of the insulating layer is 40-50 mm. Further, according to the specification of item 4.3.3 in the technical Specification for roofing engineering (GB 50207-94), when the indoor air humidity is more than 75% in a region north of the latitude 40' or the indoor air humidity is more than 80% in other regions all the year round, a steam-insulating layer is further arranged in the heat-insulating layer.
Furthermore, in the step 4, the lap joint of the asphalt waterproof roll is heated by a spray gun to realize firm bonding, and the tail end closing part is tightly embedded and filled by sealant.
Further, in the step 5, after the waterproof layer is constructed, a water spraying test is carried out, and the subsequent construction is carried out after the test is qualified. After the water spraying test of the waterproof layer is finished, the construction of the protective layer needs to be carried out as soon as possible so as to prevent the waterproof layer from cracking, bulging and the like after being exposed in the atmosphere for a long time.
Example 2
Referring to fig. 2 and 3, the present embodiment provides a sloping roof waterproof structure based on the construction method described in embodiment 1, where the waterproof structure is disposed between a cast-in-place concrete structure layer 1 and a roof tile layer 9;
waterproof construction includes from bottom to top in proper order: waterproof coating layer 2, isolation layer 3, heat preservation 4, look for slope layer 5, screed-coat 6, waterproof layer 7 and protective layer 8.
Further, the waterproof coating layer 2 is formed by coating a polyurethane coating waterproof material, and comprises a base coating layer, a middle coating layer and a top coating layer;
the base coating layer is coated on the surface of a base layer of the cast-in-place concrete structure layer 1; the middle coating layer is coated on the upper part of the substrate coating layer, and the top coating layer also comprises stone slag with the particle size of 2-3 mm.
Further, the thickness of the isolation layer 3 is 10 to 20mm, preferably 20mm.
Further, the heat-insulating layer 4 is made of a hard foam polyurethane waterproof heat-insulating material, and the thickness of the heat-insulating layer is 40-50 mm, preferably 45mm.
Further, the slope finding layer 5 is made of light concrete materials which are light in weight, low in water absorption rate and certain in strength. In the embodiment, the slope finding layer 5 is formed by pouring fly ash ceramsite concreteThe thickness of the composite material is 30mm. In the fly ash ceramsite concrete, the strength grade of the concrete is LC20, and the density is not more than 1600kg/m 3 Slump is (100 + -2) mm; the cement is 42.5Mpa ordinary Portland cement; the fly ash is I-grade or II-grade fly ash; the ceramsite is clay ceramsite with the maximum particle size not more than 20mm, preferably less than 16mm, the density grade of 600 and the bulk density range of 510-600 kg/m 3 In between.
Furthermore, the leveling layer 6 is formed by pouring cement mortar, and the thickness of the leveling layer is 20mm. Preferably, in the cement mortar, the weight ratio of cement to sand is 1.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. A waterproof construction method for a sloping roof comprises the following steps:
s1, after the cast-in-place concrete structure layer is maintained, leveling and cleaning the surface of the cast-in-place concrete structure layer, and sequentially brushing a polyurethane coating waterproof material on the surface of a base layer of the concrete structure layer in multiple layers to form a waterproof coating layer;
s2, pouring fine aggregate concrete on the surface of the waterproof coating layer to form an isolation layer; laying an insulating layer above the isolation layer;
s3, pouring concrete above the heat-insulating layer to form a slope layer, cleaning and wetting the surface of the slope layer, and pouring mortar above the slope layer to form a leveling layer;
s4, on the premise of ensuring that the lower base layer is fully dried, constructing an improved asphalt waterproof coiled material to form a waterproof layer;
and S5, pouring premixed mortar above the waterproof layer to form a protective layer, and then laying a roof tile layer to finish the construction of the waterproof structure of the sloping roof.
2. The construction method according to claim 1, wherein in the step S1, the polyurethane film-coated waterproof material is sequentially coated on the surface of the base layer in multiple layers, the coating directions of the adjacent two layers are perpendicular to each other, and after the coating of the waterproof material on the top layer is finished, the stone ballast with the particle size of 2-3 mm is thinly spread on the surface of the top layer.
3. The construction method according to claim 1, wherein in the step S2, the thickness of the heat insulation layer is determined by the design slope of the roof, the flowing direction of water and the trend of the slope of the roof.
4. The construction method according to claim 1, wherein in step S4, the overlapping position of the asphalt waterproof roll is heated by a spray gun to realize firm adhesion, and the end closing position is tightly embedded and filled by sealant.
5. The construction method according to claim 1, wherein in the step S5, after the waterproof layer is constructed, a water spraying test is performed, and the subsequent construction is performed after the test is qualified.
6. A water-proof structure of pitched roof according to the construction method as claimed in any one of claims 1 to 5, characterized in that it is arranged between a cast-in-place concrete structure layer (1) and a roof tile layer (9);
waterproof construction includes from bottom to top in proper order: waterproof coating layer (2), isolation layer (3), heat preservation (4), look for slope layer (5), screed-coat (6), waterproof layer (7) and protective layer (8).
7. The waterproof structure according to claim 6, wherein the waterproof coating layer (2) is formed by painting a polyurethane coating waterproof material, and comprises a base coating layer, an intermediate coating layer and a top coating layer;
the base coating layer is coated on the surface of a base layer of the cast-in-place concrete structure layer (1); the middle coating layer is coated on the upper part of the substrate coating layer, and the top coating layer also comprises stone slag with the particle size of 2-3 mm.
8. The waterproofing structure according to claim 6, wherein the thickness of the barrier layer (3) is 10 to 20mm; the heat-insulating layer (4) is made of hard foam polyurethane waterproof heat-insulating material, and the thickness of the heat-insulating layer is 40-50 mm.
9. The waterproof structure according to claim 6, wherein the slope layer (5) is cast from fly ash ceramsite concrete and has a thickness of 30mm.
10. The waterproof structure of claim 6, characterized in that the screed (6) is cast from cement mortar, having a thickness of 20mm.
CN202211312233.6A 2022-10-25 2022-10-25 Waterproof construction method and waterproof structure of pitched roof Pending CN115492316A (en)

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Application Number Priority Date Filing Date Title
CN202211312233.6A CN115492316A (en) 2022-10-25 2022-10-25 Waterproof construction method and waterproof structure of pitched roof

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Application Number Priority Date Filing Date Title
CN202211312233.6A CN115492316A (en) 2022-10-25 2022-10-25 Waterproof construction method and waterproof structure of pitched roof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116409967A (en) * 2023-03-20 2023-07-11 中国五冶集团有限公司 Roof crack-resistant protective layer and construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116409967A (en) * 2023-03-20 2023-07-11 中国五冶集团有限公司 Roof crack-resistant protective layer and construction method

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