CN116409967A - Roof crack-resistant protective layer and construction method - Google Patents
Roof crack-resistant protective layer and construction method Download PDFInfo
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- CN116409967A CN116409967A CN202310270121.7A CN202310270121A CN116409967A CN 116409967 A CN116409967 A CN 116409967A CN 202310270121 A CN202310270121 A CN 202310270121A CN 116409967 A CN116409967 A CN 116409967A
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- 239000011241 protective layer Substances 0.000 title claims abstract description 57
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 239000010410 layer Substances 0.000 claims abstract description 61
- 238000005336 cracking Methods 0.000 claims abstract description 32
- 239000004568 cement Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000004575 stone Substances 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 229920001155 polypropylene Polymers 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000011707 mineral Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 6
- 230000007480 spreading Effects 0.000 claims description 6
- 238000003892 spreading Methods 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003550 marker Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 2
- 229920005646 polycarboxylate Polymers 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000003469 silicate cement Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 241000269799 Perca fluviatilis Species 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D7/00—Roof covering exclusively consisting of sealing masses applied in situ; Gravelling of flat roofs
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a roof anti-cracking protective layer and a construction method, which solve the technical problems that roof concrete is easy to crack and deform in the dry and wet, temperature and structural changes and is transferred into a flexible waterproof layer, and solar radiation and air oxidation can aggravate the damage effect of the flexible waterproof material in the prior art. It comprises cement: 150-250 parts; fly ash: 50-80 parts; mineral powder: 20-50 parts; broken stone: 220-350 parts; water reducing agent: 5-10 parts; polypropylene fibers: 5-8 parts; water: 60-120 parts. When the high impervious anti-cracking protective layer is poured, an interface reinforcing process-an imprinting process is adopted, so that an interface reinforcing effect can be generated, the problem of reduced bonding strength of the interface of the functional gradient concrete layer can be effectively solved, and a perch place with continuously damaged and expanded erosion media in the use process caused by weak interface areas is reduced.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a roof crack resistance protective layer and a construction method.
Background
The leakage problem of roof construction is a common problem of engineering quality for many years, which has plagued design, construction and residential users, and it affects the normal use of the building, erodes the structural body of the building, and further shortens the service life of the building. The quality design of the roof waterproof engineering is not high, and the roof waterproof engineering is one of the main reasons for roof leakage. For a long time, no strict design specification of roof waterproof is formulated in China, how to design the roof waterproof is, what waterproof materials are used, and specific regulations are not clear.
A large number of capillary channels exist in the roof concrete, and capillary tension is generated in the capillary after water is evaporated, so that the concrete is deformed in a dry shrinkage way. The SBS modified asphalt coiled material is paved for waterproof treatment in general, but gradually destroyed under the actions of sunlight and air oxidization, so as to erode the concrete casting layer on the top layer; the rigid waterproof is generally made of fine stone concrete and waterproof mortar materials, but is not generally applied to roof waterproof building bodies with high waterproof standards because the rigid waterproof is easy to crack in dry and wet, temperature and structural changes.
Disclosure of Invention
The invention aims to provide a roof crack resistance protective layer and a construction method, which are used for solving the technical problems that roof concrete is easy to crack and deform in the dry and wet, temperature and structural changes and is transferred into a flexible waterproof layer, and solar irradiation and air oxidation can aggravate the damage effect of the flexible waterproof material in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a roof crack resistance protective layer, which is prepared from the following raw materials in parts by weight:
and (3) cement: 150-250 parts; fly ash: 50-80 parts; mineral powder: 20-50 parts; broken stone: 220-350 parts; water reducing agent: 5-10 parts; polypropylene fibers: 5-8 parts; water: 60-120 parts.
Further, the cement is silicate cement with specific surface area of 300-350 m 2 /kg，C 3 The content of A is less than or equal to 8 percent.
Further, the length of the polypropylene fiber is 3mm and 10mm, and the mass ratio of the polypropylene fiber to the polypropylene fiber is 1:1.
further, the water reducer is a polycarboxylate water reducer or/and naphthalene water reducer.
The invention provides a construction method of a roof crack resistance protective layer, which comprises the following steps:
s1, base layer processing: cleaning dust, sand grains, concrete fragments, scum and sundries on the surface of the base layer;
s2, embossing: horizontally placing the manufactured stamping cover plate above the base layer, forming a network-shaped impression on the surface of the base layer by the dead weight of the stamping cover plate, and performing interface enhancement treatment by adopting a stamping process to improve the interface bonding strength of the concrete layer and the cement-based composite material and ensure the overall stability of the connection between the roof waterproof layer and the base layer;
s3, paving a protective layer: adding the raw materials into a stirrer according to a proportion, and stirring to obtain the anti-cracking protective layer; pouring by using the anti-cracking protective layer, covering the anti-cracking protective layer to a base layer, wherein the pouring thickness is 20mm;
s4, spraying a waterproof coating: after the high impervious anti-cracking protective layer is initially set after water collection, a liquid type high-efficiency permeable crystalline waterproof material is adopted to be uniformly sprayed or smeared on the surface of the high-density waterproof layer;
s5, paving an isolation layer and an SBS waterproof coiled material;
s6, paving fine stone concrete: spreading fine stone concrete on the waterproof coiled material, brushing and spreading the cement paste binding layer, scraping with a long scraping bar along the marker rib, and rolling back and forth and vertically and horizontally with a roller.
In step S1, the base layer is an integral cast-in-situ reinforced concrete slab or a leveling layer is paved on the roof board.
In step S2, the length of the stamping cover plate is 2m, the width of the stamping cover plate is 0.5m, the lower surface of the stamping cover plate is reinforced to form a regular reinforcing steel bar net, and the reinforcing steel bars are made of phi 20 screw-thread steel.
Further, in step S3, the stirring time is 3 to 5 minutes.
Further, in the step S3, pouring is divided into continuous pouring, brushing plain cement paste on a base layer for 1 time before pouring, pouring an anti-cracking protective layer on the base layer for paving to ensure that the thickness of the anti-cracking protective layer is consistent, using a flat vibrator to tap, then using an iron roller to repeatedly roll for 5-6 times in a crisscross manner until the anti-cracking protective layer is compact, trowelling and compacting after the surface is overturned, performing grouting and trowelling for 2 times before initial setting, and performing 1 time when the cement is dried.
Based on the technical scheme, the embodiment of the invention at least has the following technical effects:
(1) According to the roof anti-cracking protective layer and the construction method, through innovation of the material system design and the construction method, a protective layer is paved on the structural layer and the heat preservation layer, so that the cement-based material interface transition area is eliminated or weakened, and the functions of high water resistance, high anti-cracking resistance and high corrosion resistance are realized. In the construction method, the process of twice pouring (a structural layer and a waterproof layer) and once spraying (waterproof coating) is adopted, and the stamping process is adopted to strengthen the weak area of the interface.
(2) According to the roof anti-cracking protective layer and the construction method, when the high anti-cracking protective layer is poured, an interface reinforcing process-imprinting process is adopted, so that an interface reinforcing effect can be generated, the problem of reduction of the interface bonding strength of the functional gradient concrete functional layer can be effectively solved, and a habitat which is continuously damaged and expanded by erosion media in the use process and is caused by weak interface areas is reduced.
(3) According to the roof anti-cracking protective layer and the construction method, the construction is carried out according to the construction method, so that the material and the energy consumption can be saved, the waterproof layer and the protective layer are integrally designed, and the working procedure is simple; the construction process mainly aims at the connection and prevention of the structural layer/heat preservation layer and the protection layer
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present invention.
The aim of the invention is realized by the following technical scheme:
preparation examples 1-4:
a roof crack resistant protective layer comprises the following components: cement, fly ash, mineral powder, broken stone, a water reducing agent, polypropylene fibers and water. The specific input of each component is shown in Table 1.
TABLE 1
| Preparation example 1 | Preparation example 2 | Preparation example 3 | Preparation example 4 | |
| Cement and its preparation method | 200 parts of | 200 parts of | 200 parts of | 200 parts of |
| Fly ash | 60 parts of | 50 parts of | 70 parts of | 80 parts of |
| Mineral powder | 40 parts of | 30 parts of | 50 parts of | 20 parts of |
| Broken stone | 300 parts of | 320 parts | 280 parts of | 300 parts of |
| Water reducing agent | 8 parts of | 9 parts of | 6 parts of | 7 parts of |
| Polypropylene fiber | 6 parts of | 5 parts of | 8 parts of | 7 parts of |
| Water and its preparation method | 100 parts of | 100 parts of | 100 parts of | 100 parts of |
Comparative example preparation example: 200 parts of cement, 60 parts of fly ash, 60 parts of mineral powder, 300 parts of crushed stone, 8 parts of water reducer and 100 parts of water.
Example 1:
a construction method of a roof crack resistance protective layer comprises the following steps:
s1, base layer processing: cleaning dust, sand grains, concrete fragments, scum and sundries on the surface of the base layer;
s2, embossing: horizontally placing the manufactured stamping cover plate above the base layer, forming a network-shaped impression on the surface of the base layer by the dead weight of the stamping cover plate, and performing interface enhancement treatment by adopting a stamping process to improve the interface bonding strength of the concrete layer and the cement-based composite material and ensure the overall stability of the connection between the roof waterproof layer and the base layer; the length of the stamping cover plate is 2m, the width of the stamping cover plate is 0.5m, the lower surface of the stamping cover plate is subjected to reinforcement treatment to form a regular reinforcing steel bar network, and the reinforcing steel bars adopt phi 20 screw-thread steel;
s3, paving a protective layer: adding the raw material components of the preparation example 1 into a stirrer to stir for 3 minutes to obtain the anti-cracking protective layer; brushing plain cement paste on a base layer for 1 time before pouring, pouring the anti-cracking protective layer on the base layer surface for paving to ensure that the thickness of the anti-cracking protective layer is consistent, performing cross reciprocal rolling on the base layer surface for 6 times after compacting by using a flat vibrator, trowelling and compacting after surface grouting, performing grouting and trowelling for 2 times before initial setting, and performing grouting and trowelling for 1 time after the cement is dried, covering the base layer, and pouring to ensure that the thickness is 20mm;
s4, spraying a waterproof coating: after the high impervious anti-cracking protective layer is initially set after water collection, a liquid type high-efficiency permeable crystalline waterproof material is adopted to be uniformly sprayed or smeared on the surface of the high-density waterproof layer;
s5, paving an isolation layer and an SBS waterproof coiled material;
s6, paving fine stone concrete: spreading fine stone concrete on the waterproof coiled material, brushing and spreading the cement paste binding layer, scraping with a long scraping bar along the marker rib, and rolling back and forth and vertically and horizontally with a roller.
Example 2:
the construction method of the roof crack resistance protective layer is different from that of the embodiment 1 only in that:
the roof crack resistance protective layer adopts the protective layer of preparation example 2.
Example 3:
the construction method of the roof crack resistance protective layer is different from that of the embodiment 1 only in that:
the roof crack resistance protective layer adopts the protective layer of preparation example 3.
Example 4:
the construction method of the roof crack resistance protective layer is different from that of the embodiment 1 only in that:
the roof crack resistance protective layer adopts the protective layer of preparation example 3.
Comparative example:
the construction method of the roof crack resistance protective layer is different from that of the embodiment 1 only in that:
the roof crack resistance protective layer adopts the protective layer of the comparative preparation example.
Before casting, the finished product high-permeability-resistance anti-cracking protective layer mortar is inspected, and specific indexes are as follows:
| slump (mm) | 3d compressive Strength | Compressive Strength when 7d is taken out of the pool | 28d compressive Strength | |
| Example 1 | 50 | ≥15MPa | ≥35MPa | ≥72MPa |
| Example 2 | 55 | ≥15MPa | ≥35MPa | ≥72MPa |
| Example 3 | 62 | ≥15MPa | ≥35MPa | ≥72MPa |
| Example 4 | 51 | ≥15MPa | ≥35MPa | ≥72MPa |
| Comparative example | 72 | ≥15MPa | ≥ 35MPa | 60MPa |
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The roof anti-cracking protective layer is characterized by comprising the following raw materials in parts by weight:
and (3) cement: 150-250 parts; fly ash: 50-80 parts; mineral powder: 20-50 parts; broken stone: 220-350 parts; water reducing agent: 5-10 parts; polypropylene fibers: 5-8 parts; water: 60-120 parts.
2. A roofing anti-cracking protective layer according to claim 1, wherein: the cement is silicate cement with specific surface area of 300-350 m 2 /kg，C 3 The content of A is less than or equal to 8 percent.
3. A roofing anti-cracking protective layer according to claim 1, wherein: the length of the polypropylene fiber is 3mm and 10mm, and the mass ratio of the polypropylene fiber to the polypropylene fiber is 1:1.
4. a roofing anti-cracking protective layer according to claim 1, wherein: the water reducer is a polycarboxylate water reducer or/and naphthalene water reducer.
5. A construction method of a roof crack resistance protective layer comprises the following steps:
s1, base layer processing: cleaning dust, sand grains, concrete fragments, scum and sundries on the surface of the base layer;
s2, embossing: horizontally placing the manufactured stamping cover plate above the base layer, forming a network-shaped impression on the surface of the base layer by the dead weight of the stamping cover plate, and performing interface enhancement treatment by adopting a stamping process to improve the interface bonding strength of the concrete layer and the cement-based composite material and ensure the overall stability of the connection between the roof waterproof layer and the base layer;
s3, paving a protective layer: preparing a roof anti-cracking protective layer by using the anti-cracking protective layer according to any one of claims 1 to 4, and adding raw materials into a stirrer according to a proportion to stir to obtain the anti-cracking protective layer; pouring by using the anti-cracking protective layer, covering the anti-cracking protective layer to a base layer, wherein the pouring thickness is 20mm;
s4, spraying a waterproof coating: after the high impervious anti-cracking protective layer is initially set after water collection, a liquid type high-efficiency permeable crystalline waterproof material is adopted to be uniformly sprayed or smeared on the surface of the high-density waterproof layer;
s5, paving an isolation layer and an SBS waterproof coiled material;
s6, paving fine stone concrete: spreading fine stone concrete on the waterproof coiled material, brushing and spreading the cement paste binding layer, scraping with a long scraping bar along the marker rib, and rolling back and forth and vertically and horizontally with a roller.
6. The construction method of the roof crack resistance protection layer according to claim 5, wherein the construction method comprises the following steps: in the step S1, the base layer is an integral cast-in-situ reinforced concrete slab or a leveling layer is paved on a roof board.
7. The construction method of the roof crack resistance protection layer according to claim 5, wherein the construction method comprises the following steps: in the step S2, the length of the stamping cover plate is 2m, the width of the stamping cover plate is 0.5m, the lower surface of the stamping cover plate is subjected to reinforcement treatment, a regular reinforcing steel bar net is formed, and the reinforcing steel bars are made of phi 20 screw steel.
8. The construction method of the roof crack resistance protection layer according to claim 5, wherein the construction method comprises the following steps: in the step S3, the stirring time is 3-5 minutes.
9. The construction method of the roof crack resistance protection layer according to claim 5, wherein the construction method comprises the following steps: in the step S3, pouring is divided into continuous pouring, wherein plain cement paste is brushed on a base layer for 1 time before pouring, then an anti-cracking protective layer is poured on a base layer surface for paving, so that the thickness of the anti-cracking protective layer is consistent, a flat vibrator is used for vibrating and compacting, then an iron roller is used for cross reciprocal rolling for 5-6 times until the anti-cracking protective layer is compact, the surface is smoothed and compacted, grouting and trowelling are carried out for 2 times before initial setting, and finally grouting and trowelling are carried out for 1 time after cement is dried.
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| CN202310270121.7A CN116409967A (en) | 2023-03-20 | 2023-03-20 | Roof crack-resistant protective layer and construction method |
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