Waterproof construction method for energy-saving self-protection roof

Abstract

The invention provides an energy-saving self-protection roof waterproof construction method. The energy-saving self-protection roof waterproof construction method comprises the following steps of S1, base layer cleaning, S2, heat preservation layer laying, S3, leveling layer laying, S4, waterproof layer laying, S5, protective layer laying and S6, waterproof coating layer laying. Through material replacement, such as combination of fiber reinforced dry-mixed mortar and a flexible waterproof layer, and addition of a silicone-acrylic reflective thermal insulation coating layer, a rigid-flexible combined waterproof system is formed, and through technological optimization, such as layered pouring, gradient laser positioning, fiberglass gridding cloth reinforcement and other key steps, the structural strength and construction precision are ensured, and the construction efficiency is improved. A more complete, environment-friendly and durable waterproof construction scheme is formed, the water-based permeable crystallization type waterproof agent is adopted, the waterproof structure is more environment-friendly and free of harmful substances, the TPO coiled material is adopted, the seam sealing performance is ensured through hot air welding, meanwhile, the adhesive force is enhanced in combination with the water-based epoxy interface agent, and the waterproof effect is more reliable.

Description

Technical Field

[0001] The present application relates to the technical field of building waterproofing, and specifically to an energy-saving self-protective roofing waterproof construction method. Background Technique

[0002] Building waterproofing refers to the measures taken on building materials and structures to prevent water from penetrating certain parts of a building. Waterproofing is mostly used on roofs, underground buildings, the underground parts of buildings, and inner rooms and water storage structures that need waterproofing. According to the different measures and means taken, it is divided into two categories: material waterproofing and structural waterproofing. Material waterproofing relies on building materials to block the passage of water to achieve the purpose of waterproofing or increase the ability to resist leakage, such as roll waterproofing, film waterproofing, rigid waterproofing with concrete and cement mortar, and waterproofing with clay and lime soil. Structural waterproofing, on the other hand, adopts appropriate structural forms to block the passage of water to achieve the purpose of waterproofing, such as waterstops and cavity structures.

[0003] A prior patent (publication number: CN103469977B) disclosed an energy-saving self-protective roofing waterproof construction method. This construction method combines rigid and flexible waterproof materials for construction: a hydrophobic slope-forming and heat-insulating layer composed of waterproofing agent, cement, and heat-insulating lightweight aggregate is laid on the roof structural layer; a leveling layer composed of waterproofing agent and cement mortar is laid on the slope-forming and heat-insulating layer; a flexible waterproof layer composed of a flexible self-adhesive waterproof roll is laid on the leveling layer; a protective layer composed of waterproofing agent and cement mortar is laid on the flexible self-adhesive waterproof roll; a metal roofing acrylic high-elastic waterproof coating or a leveling layer made of waterproofing agent and cement mortar is laid on the protective layer. The method of the present invention starts from the treatment of the base leveling layer to achieve layer-by-layer waterproofing without water seepage, one-time construction, lifelong waterproofing, no hidden dangers, solves the problem that it is difficult to find the leakage point in traditional waterproof leakage, and at the same time achieves functions such as slope-forming, protection, heat preservation, heat insulation, and permanent waterproofing effect as long as the base structure remains unchanged.

[0004] However, in this construction method, the material selection of the flexible waterproof layer is single and lacks multi-layer composite design. Secondly, although the basic construction steps are provided in the construction method, the description of some key steps (such as the treatment of base cracks) is not detailed enough, lacking specific operation guidelines and quality control standards. This may lead to deviations during the implementation by construction workers, affecting the final waterproofing effect. Therefore, an energy-saving self-protective roofing waterproof construction method is proposed for how to form a more complete, environmentally friendly, and durable waterproof construction plan in roofing waterproof construction. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an energy-saving self-protective roofing waterproof construction method, which solves the problems raised in the background technique.

[0006] To achieve the above object, the present application provides the following technical solutions: An energy-saving self-protecting roofing waterproof construction method, comprising the following steps: S1: Substrate cleaning, cleaning the surface of the substrate to ensure that the substrate is firm, flat, and free of floating soil, impurities, etc.; S2: Laying the insulation layer, preparing EPS particles, sulfoaluminate cement, and waterproofing agent in a mass ratio of 1.8:1:0.03 for mixing, and laying the insulation layer on the surface of the substrate; S3: Laying the leveling layer, preparing a polymer emulsion and fiber-reinforced dry-mixed mortar for mixing, and laying the leveling layer on the surface of the insulation layer, wherein the polypropylene fiber content in the fiber-reinforced dry-mixed mortar is 0.9 kg / m³; S4: Laying the waterproof layer, preparing a water-based epoxy interface agent to coat the leveling layer, and after waiting for it to dry, laying TPO membranes on the surface of the leveling layer to form the waterproof layer; S5: Laying the protective layer, preparing polymer cement-based waterproof mortar and chopped basalt fibers, then laying the waterproof mortar on the ground and pressing in the chopped basalt fibers to form the protective layer. The laying thickness of the polymer cement-based waterproof mortar is 15 mm, and the fiber length of the chopped basalt fibers is 12 mm and the content is 2 kg / m³; S6: Laying the waterproof coating layer, scraping and spraying a layer of silicone-acrylic reflective heat-insulating coating on the surface of the protective layer. The solar reflectance of the silicone-acrylic reflective heat-insulating coating is ≥0.88, the stain resistance is ≤10%, and the thickness is 0.5 mm.

[0007] Through the above solutions, by combining material replacements such as the combination of fiber-reinforced dry-mixed mortar and flexible waterproof layer, and adding a silicone-acrylic reflective heat-insulating coating layer, a rigid-flexible combined waterproof system is formed. Through process optimizations such as layered pouring, laser positioning slope, and fiberglass mesh reinforcement and other key steps, the structural strength and construction accuracy are ensured, forming a more complete, environmentally friendly, and durable waterproof construction plan. By using a water-based permeable crystalline waterproofing agent, it is more environmentally friendly and free of harmful substances. By using TPO membranes and ensuring the seam tightness through hot air welding, and at the same time combining with a water-based epoxy interface agent to enhance the adhesion, the waterproof effect is more reliable.

[0008] Further, the substrate cleaning is as follows; Using a high-pressure water gun to wash and clean the surface of the substrate to ensure that the substrate is firm, flat, and free of floating soil, impurities, etc. For stubborn contaminants such as oil stains, organic solvents can be used for cleaning, but it is necessary to operate in a well-ventilated environment to avoid harm to the human body caused by solvent volatilization; For the treatment of the base layer cracks, clean the cracks, remove the debris and dust inside the cracks, fill the inner cracks with polymer mortar, fill the caulking material into the cracks, compact and level it to make it flush with the base layer surface. After the caulking material dries, carry out grinding treatment to make its surface smooth and flat.

[0009] Through the above solution, the strong impact force of the high-pressure water gun can effectively remove the loose substances such as floating soil and most impurities on the base layer surface. By repairing the cracks, the crack resistance of the base layer is enhanced, the further expansion of the cracks is prevented, and the base layer surface is smoothly transitioned, which is beneficial to the subsequent construction operations.

[0010] Furthermore, the method for laying the thermal insulation layer is as follows; Prepare EPS particles, sulfoaluminate cement and waterproof agent according to the mass ratio of 1.8 : 1 : 0.03. Prepare mechanical stirring equipment, put the EPS particles, sulfoaluminate cement and waterproof agent into the mixer according to the above ratio, and carry out mechanical stirring to ensure that the stirring time is not less than 3 minutes to ensure that the materials are fully and evenly mixed; For the first layer pouring, use a laser locator to control the slope to ensure that the slope is 2%, and then use a screed to initially level the mixed slurry to ensure the surface is flat; For the second layer pouring to embed the reinforcement layer, before the first layer of slurry solidifies, lay the fiberglass grid cloth, press the fiberglass grid cloth into the non-solidified slurry to ensure its complete embedding. Note that the lap width of the fiberglass grid cloth should be not less than 10 cm to ensure the continuity and strength of the overall structure. The waterproof agent is a water-based penetrating crystalline waterproof agent.

[0011] Through the above solution, the materials are fully fused through mechanical stirring to form a homogeneous slurry, improving the overall performance and consistency of the thermal insulation layer. Using a laser locator to control the slope ensures smooth drainage and prevents water accumulation. The screed initially levels the slurry to make the surface flat, laying a foundation for the subsequent construction, improving the drainage performance of the roof or ground, reducing the risk of water damage. Laying the fiberglass grid cloth before the first layer of slurry solidifies increases the tensile strength and crack resistance of the thermal insulation layer, and by controlling the lap width of the fiberglass grid cloth, the integrity and strength of the structure are ensured. By using a water-based penetrating crystalline waterproof agent, the waterproof performance of the thermal insulation layer is improved.

[0012] Furthermore, the method for laying the leveling layer is as follows; Divide the construction area into multiple single bins, and the area of each single bin does not exceed 9 m²; Prepare fiber-reinforced dry-mixed mortar with a polypropylene fiber dosage of 0.9 kg / m³. Then, use mechanical spraying equipment to evenly spray the fiber-reinforced dry-mixed mortar on the predetermined area. Control the outlet pressure of the spray gun at 0.6 MPa to ensure the uniform distribution and appropriate thickness of the mortar. Adjust the moving speed of the spray gun to 0.8 m / s to ensure that the single-layer forming thickness reaches 20 mm; After the mortar begins to set, perform secondary troweling treatment, alternating the use of a steel trowel and a plastic trowel to improve the surface flatness and density. Before the mortar finally sets, spray a silane-based curing agent to form a protective film with a thickness of 0.1 mm, enhancing the impermeability and durability of the mortar; Ensure that the construction interval between adjacent bays is at least 6 hours to ensure that the mortar has sufficient hardening time.

[0013] Through the above scheme, the construction area is divided into single bays with an area not exceeding 9 m², making the construction scale of each single bay relatively small and easy to operate. Compared with large-area integral construction, smaller single bays can reduce the possibility of cracks caused by excessive shrinkage differences, thereby improving the integrity of the entire leveling layer structure. The polypropylene fiber dosage is 0.9 kg / m³, and the fibers play a reinforcing role in the mortar, improving the tensile strength and toughness of the mortar. Through secondary troweling treatment, the surface can be made smoother and flatter, thus meeting the requirements of ground flatness and providing good base conditions for subsequent surface layer construction. Through the 0.1-mm silane-based curing agent protective film, a hydrophobic barrier can be formed on the surface of the mortar to prevent the penetration of water, thereby improving the impermeability of the mortar.

[0014] Furthermore, the method for laying the waterproof layer is as follows; Use a water-based epoxy primer to coat the base layer with a coating amount of 0.4 kg / m². Wait for the primer to dry on the surface, ensuring that the base layer surface is dry and has no slippery feeling. After the primer is dry; Start laying the TPO membrane. Adopt the pre-laying and reverse-adhesion process to lay the TPO membrane on the base layer, ensuring that the membrane is closely attached to the base layer. Control the lap width of the TPO membrane at 80 mm to ensure the sealing performance of the joints; After the TPO membrane is laid, use a hot air welding device to weld the membrane. Weld evenly along the lap of the membrane to ensure the welding quality. During the welding process, pay attention to observing the changes in the membrane to ensure that the welding is uniform and there is no missed welding; The temperature of the hot air welding device is 400 - 450 °C. Adjust the wind speed to 0.5 m / s and control the moving speed of the welding gun at 0.3 m / min.

[0015] Through the above solution, the waterborne epoxy interface agent can fill the pores on the surface of the base layer, improve the bonding force between the base layer and the TPO coil, and it can improve the microscopic structure of the base layer surface, enabling the coil to adhere better to the base layer and preventing the occurrence of hollowing. After the interface agent dries, it forms a dense film that can seal the capillary pores on the surface of the base layer and prevent the moisture inside the base layer from migrating upward. Use a hot air welding device to weld the coil. This connection method is more reliable than simple bonding and can withstand greater external forces. During the welding process, by controlling the temperature (400 - 450 °C), wind speed (0.5 m / s), and welding torch moving speed (0.3 m / min) of the hot air welding device, ensure uniform welding and prevent the occurrence of missed welding, thereby ensuring the integrity and waterproof effect of the entire waterproof layer.

[0016] Furthermore, the method for laying the protective layer is as follows; Prepare polymer cement-based waterproof mortar, incorporate 5% silica aerogel according to the requirements of impermeability grade P10, then lay the waterproof mortar on the ground with a laying thickness of 15 mm, and then press basalt chopped fibers into the mortar surface. The fiber length is 12 mm and the dosage is 2 kg / m³. After the pressing is completed; Use a trowel to compact and level it.

[0017] Through the above solution, the impermeability performance of the mortar is improved by incorporating silica aerogel, enhancing the overall durability and stability. By pressing basalt chopped fibers into the mortar, the tensile strength and toughness of the material are increased, preventing the mortar layer from cracking.

[0018] Furthermore, the method for laying the waterproof coating layer is as follows; First, clean the surface of the protective layer to remove dust; Then, for the first pass of scraping, use a toothed trowel, keep the trowel at a 45° oblique angle to the base layer surface, and start scraping the silicon acrylic reflective heat insulation coating, controlling the scraping thickness to be 0.3 mm. Conduct the scraping operation in an orderly manner in a certain direction. After the first pass of scraping is completed, wait for the coating to dry according to the requirement of an interval of 2 h. During this period, avoid personnel stepping on or touching the construction surface; Finally, for the second pass of spraying, after the first pass of coating is dry, use an airless spraying machine to perform the spraying operation of the second pass of coating. Set the spraying machine pressure to 20 MPa. Keep the spray gun perpendicular to the base layer surface and at a uniform distance during spraying, control the spraying thickness to be 0.2 mm, and evenly spray the silicon acrylic reflective heat insulation coating on the surface. When the second pass of coating is not dry, quickly use a spreading tool to evenly sprinkle calcined kaolin particles on the surface of the coating, so that the particles are fully combined with the coating.

[0019] Through the above solution, by removing dust, the adhesion between the coating and the base layer is improved, problems such as coating peeling and falling off are prevented, and the durability of the heat insulation effect is ensured. Through the first scraping, a relatively flat and certain-thickness bottom layer is provided for subsequent spraying, making the entire coating structure more stable. Through the second spraying, the total thickness of the entire silicone-acrylic reflective heat insulation coating reaches 0.5 mm, meeting the designed heat insulation and protection requirements. The uniform coating and embedded particles can effectively reflect heat sources such as infrared rays in sunlight, reduce the heat absorption inside the building, and achieve the function of reflective heat insulation.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial effects: This energy-saving self-protective roof waterproof construction method forms a rigid-flexible combined waterproof system by material replacement such as the combination of fiber-reinforced dry-mixed mortar and flexible waterproof layer, and by adding a silicone-acrylic reflective heat insulation coating layer. Through process optimization such as key steps like layered pouring, laser positioning slope, and fiberglass mesh cloth reinforcement, the structural strength and construction accuracy are ensured, forming a more complete, environmentally friendly, and durable waterproof construction plan. By using a water-based permeable crystalline waterproof agent, it is more environmentally friendly and free of harmful substances. By using TPO membranes and ensuring the seam tightness through hot air welding, and at the same time combining with a water-based epoxy interface agent to enhance the adhesion, the waterproof effect is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic flow chart of an energy-saving self-protective roof waterproof construction method of the present invention Figure 2 is a schematic cross-sectional view of the roof after waterproof construction; Figure 3 is a schematic structural view of the roof after waterproof construction; Figure 4 is Figure 3 a schematic enlarged cross-sectional view of part A in

[0022] In the figure: 1, base layer; 2, insulation layer; 3, leveling layer; 4, waterproof layer; 5, protective layer; 6, waterproof coating layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0024] Please refer to Figure 1 and Figure 2, an energy-saving self-protective roof waterproof construction method in this embodiment includes the following steps: S1: Base cleaning, cleaning the surface of the base to ensure that the base is firm, flat, and free of floating soil, impurities, etc.; S2: Laying the insulation layer, preparing EPS particles, sulfoaluminate cement, and waterproofing agent for mixing according to a mass ratio of 1.8:1:0.03, and laying the insulation layer on the surface of the base; S3: Laying the leveling layer, preparing a polymer emulsion and fiber-reinforced dry-mixed mortar for mixing, and laying the leveling layer on the surface of the insulation layer, where the polypropylene fiber content in the fiber-reinforced dry-mixed mortar is 0.9 kg / m³; S4: Laying the waterproof layer, preparing a water-based epoxy interface agent to coat the leveling layer, and after waiting for it to dry, laying TPO sheets on the surface of the leveling layer to form the waterproof layer; S5: Laying the protective layer, preparing polymer cement-based waterproof mortar and basalt chopped fibers, then laying the waterproof mortar on the ground and pressing in the basalt chopped fibers to form the protective layer. The laying thickness of the polymer cement-based waterproof mortar is 15 mm, and the fiber length of the basalt chopped fibers is 12 mm with a content of 2 kg / m³; S6: Laying the waterproof coating layer, scraping and spraying a layer of silicone-acrylic reflective heat-insulating coating on the surface of the protective layer. The solar reflectance of the silicone-acrylic reflective heat-insulating coating is ≥0.88, the stain resistance is ≤10%, and the thickness is 0.5 mm. By replacing materials such as the combination of fiber-reinforced dry-mixed mortar and flexible waterproof layer, and adding a silicone-acrylic reflective heat-insulating coating layer, a rigid-flexible combined waterproof system is formed. Through process optimization such as layered pouring, laser positioning slope, and fiberglass mesh reinforcement and other key steps, the structural strength and construction accuracy are ensured, forming a more complete, environmentally friendly, and durable waterproof construction plan.

[0025] Please refer to Figure 1 and Figure 2 , the base cleaning is as follows: Use a high-pressure water gun to wash and clean the surface of the base to ensure that the base is firm, flat, and free of floating soil, impurities, etc. For stubborn pollutants such as oil stains, organic solvents can be used for cleaning, but it needs to be operated in a well-ventilated environment to avoid harm to the human body caused by solvent volatilization; Among them, for the treatment of base cracks, clean the cracks, remove the sundries and dust in the cracks, and fill the inner cracks with polymer mortar. Fill the caulking material into the cracks, compact and level it to make it flush with the surface of the base. After the caulking material dries, perform a grinding treatment to make its surface smooth and flat. Through the powerful impact force of the high-pressure water gun, loose substances such as floating soil and most impurities on the surface of the base can be effectively removed. By repairing the cracks, the crack resistance of the base is enhanced, preventing the cracks from further expanding, and making the surface of the base transition smoothly, which is beneficial to subsequent construction operations.

[0026] Please refer to Figure 1 and Figure 2, the method for laying the insulation layer is as follows: Prepare EPS particles, sulfoaluminate cement and waterproof agent according to a mass ratio of 1.8:1:0.03. Prepare mechanical stirring equipment. Put the EPS particles, sulfoaluminate cement and waterproof agent into the mixer according to the above ratio and carry out mechanical stirring to ensure that the stirring time is not less than 3 minutes to ensure that the materials are fully and evenly mixed; for the first layer pouring, use a laser locator to control the slope to ensure that the slope is 2%, and then use a screed to initially level the mixed slurry to ensure a flat surface; for the second layer pouring and embedding the reinforcement layer, before the first layer of slurry has solidified, lay the fiberglass mesh cloth and press the fiberglass mesh cloth into the unfrozen slurry to ensure that it is fully embedded. Note that the overlap width of the fiberglass mesh cloth should be not less than 10 cm to ensure the continuity and strength of the overall structure. The waterproof agent is a water-based penetrating crystalline waterproof agent; through mechanical stirring, the materials are fully fused to form a homogeneous slurry, improving the overall performance and consistency of the insulation layer. Use a laser locator to control the slope to ensure smooth drainage and prevent water accumulation. Use a screed to initially level the slurry to make the surface flat, laying the foundation for subsequent construction, improving the drainage performance of the roof or ground, and reducing the risk of water damage. Lay the fiberglass mesh cloth before the first layer of slurry solidifies to increase the tensile strength and crack resistance of the insulation layer, and by controlling the overlap width of the fiberglass mesh cloth, ensure the integrity and strength of the structure. By using a water-based penetrating crystalline waterproof agent, improve the waterproof performance of the insulation layer.

[0027] Please refer to Figure 1 and Figure 2, the method for laying the leveling layer is as follows: divide the construction area into multiple single bins, with the area of each single bin not exceeding 9 m²; prepare fiber-reinforced dry-mixed mortar with a polypropylene fiber dosage of 0.9 kg / m³, and then use mechanical spraying equipment to evenly spray the fiber-reinforced dry-mixed mortar on the predetermined area, controlling the outlet pressure of the spray gun at 0.6 MPa to ensure the uniform distribution and appropriate thickness of the mortar, adjust the moving speed of the spray gun to 0.8 m / s to ensure that the single-pass forming thickness reaches 20 mm; perform secondary troweling after the mortar begins to set, using an iron trowel and a plastic trowel alternately to improve the surface flatness and density. Before the mortar finally sets, spray a silane-based curing agent to form a protective film with a thickness of 0.1 mm to enhance the impermeability and durability of the mortar; ensure that the construction interval between adjacent bins is at least 6 hours to ensure sufficient hardening time for the mortar; divide the construction area into single bins with an area not exceeding 9 m², so that the construction scale of each single bin is relatively small and easy to operate. Compared with large-area integral construction, smaller single bins can reduce the possibility of cracks caused by excessive shrinkage differences, thereby improving the integrity of the entire leveling layer structure. The polypropylene fiber dosage is 0.9 kg / m³, and the fibers play a reinforcing role in the mortar, improving the tensile strength and toughness of the mortar. Through secondary troweling, the surface can be made smoother and flatter, thus meeting the requirements of floor flatness and providing good base conditions for subsequent surface layer construction. Through the 0.1-mm silane-based curing agent protective film, a hydrophobic barrier can be formed on the mortar surface to prevent water penetration, thereby improving the impermeability of the mortar.

[0028] Please refer to Figure 1 and Figure 2The method for laying the waterproof layer is: use a water-based epoxy interface agent to brush the base layer with a coating amount of 0.4kg / m², wait for the interface agent to dry, ensure that the surface of the base layer is dry and not greasy, and after the interface agent is dry; start laying the TPO coil, use the pre-laid reverse-adhesive process to lay the TPO coil on the base layer, ensure that the coil and the base layer fit tightly, control the overlap width of the TPO coil to 80mm, and ensure the sealing of the joints; after the TPO coil is laid, use hot air welding equipment to weld the coil, and weld evenly along the overlap of the coil to ensure welding quality. Pay attention to the changes in the coil during welding to ensure uniform welding and no leakage; the temperature of the hot air welding equipment The temperature is 400-450℃, the wind speed is adjusted to 0.5m / s, and the moving speed of the welding gun is controlled to 0.3m / min. The water-based epoxy interface agent can fill the pores on the surface of the base layer and improve the bonding force between the base layer and the TPO membrane. It can improve the microstructure of the surface of the base layer, so that the membrane can be better attached to the base layer and prevent hollowing. After the interface agent dries, a dense film is formed, which can close the capillary pores on the surface of the base layer and prevent the moisture inside the base layer from migrating upward. The membrane is welded with hot air welding equipment. This connection method is more reliable than simple bonding and can withstand greater external forces. During the welding process, the temperature of the hot air welding equipment (400-450℃), wind speed (0.5m / s) and moving speed of the welding gun (0.3m / min) are controlled to ensure uniform welding and prevent the occurrence of leaking welding, thereby ensuring the integrity and waterproof effect of the entire waterproof layer.

[0029] See also Figure 1 and Figure 2 The method for laying the protective layer is to prepare polymer cement-based waterproof mortar, add 5% silica aerogel according to the requirements of waterproof grade P10, and then lay the waterproof mortar on the ground with a laying thickness of 15mm. Then press basalt chopped fibers on the surface of the mortar, with a fiber length of 12mm and a dosage of 2kg / m³. After the pressing is completed, use a trowel to compact and smooth it. By adding silica aerogel, the anti-seepage performance of the mortar is improved, and the overall durability and stability are enhanced. By pressing in basalt chopped fibers, the tensile strength and toughness of the material are increased to prevent the mortar layer from cracking.

[0030] See also Figure 1 and Figure 2, the method for laying the waterproof coating layer is as follows: First, clean the surface of the protective layer to remove dust. Then, apply the first coat by using a toothed trowel, keeping the trowel at a 45° oblique angle to the base surface, and start applying the silicone-acrylic reflective heat-insulating coating, controlling the application thickness to be 0.3 mm, and carry out the application operation in an orderly manner in a certain direction. After the first coat is applied, wait for the coating to dry according to the requirement of an interval of 2 hours. During this period, avoid personnel trampling or touching the construction surface. Finally, apply the second coat by spraying. After the first coat of paint is dry, use an airless spraying machine to carry out the spraying operation of the second coat of paint. Set the spraying machine pressure to 20 MPa. Keep the spray gun perpendicular to the base surface and at a uniform distance during spraying, and control the spraying thickness to be 0.2 mm. Uniformly spray the silicone-acrylic reflective heat-insulating coating on the surface. When the second coat of paint is not dry, quickly use a spreading tool to evenly sprinkle the calcined kaolin particles on the surface of the paint, so that the particles are fully combined with the paint. By removing dust, the adhesion between the paint and the base is improved, preventing problems such as coating peeling and falling off, and ensuring the durability of the heat-insulating effect. Through the first coat of application, a relatively flat and thick bottom layer foundation is provided for the subsequent spraying, making the entire coating structure more stable. Through the second coat of spraying, the total thickness of the entire silicone-acrylic reflective heat-insulating coating reaches 0.5 mm, meeting the designed heat-insulating and protective requirements. The uniform coating and the embedded particles can effectively reflect heat sources such as infrared rays in sunlight, reduce the heat absorption inside the building, and achieve the function of reflective heat insulation.

[0031] In this embodiment, by replacing materials such as the combination of fiber-reinforced dry-mixed mortar and the flexible waterproof layer, and adding a silicone-acrylic reflective heat-insulating coating layer, a rigid-flexible combined waterproof system is formed. Through process optimization such as key steps of layered pouring, laser positioning slope, and fiberglass mesh cloth reinforcement, the structural strength and construction accuracy are ensured, forming a more complete, environmentally friendly, and durable waterproof construction plan. By using a water-based permeable crystalline waterproofing agent, it is more environmentally friendly and contains no harmful substances. By using TPO membranes and ensuring the seam tightness through hot air welding, and at the same time combining a water-based epoxy interface agent to enhance the adhesion, the waterproof effect is more reliable.

[0032] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0033] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An energy-saving self-protective roof waterproofing construction method, characterized in that: The following steps are involved: S1: Clean the base layer, clean the surface of the base layer to ensure that the base layer is solid and flat, without loose soil, impurities, etc.; S2: Laying the insulation layer, preparing EPS particles, sulphoaluminate cement and waterproofing agent in a mass ratio of 1.8:1:0.03, mixing them, and laying the insulation layer on the surface of the base layer; S3: Lay the leveling layer, prepare the polymer emulsion and fiber-reinforced dry-mixed mortar for mixing, and lay the leveling layer on the surface of the insulation layer, wherein the polypropylene fiber content in the fiber-reinforced dry-mixed mortar is 0.9kg / m³; S4: Lay the waterproof layer, prepare the water-based epoxy interface agent to brush the leveling layer, wait for it to dry, and then lay the TPO membrane on the surface of the leveling layer to form a waterproof layer; S5: Laying a protective layer, preparing polymer cement-based waterproof mortar and basalt chopped fibers, then laying the waterproof mortar on the ground, and pressing the basalt chopped fibers into the protective layer, the polymer cement-based waterproof mortar is laid with a thickness of 15 mm, and the basalt chopped fibers have a fiber length of 12 mm and a dosage of 2 kg / m³; S6: Lay a waterproof coating layer, scrape and spray a silicone-acrylic reflective thermal insulation coating on the surface of the protective layer, wherein the silicone-acrylic reflective thermal insulation coating has a solar reflectance ratio of ≥0.88, a stain resistance of ≤10%, and a thickness of 0.5 mm.

2. The energy-saving self-protective roof waterproofing construction method according to claim 1 is characterized in that: The base cleaning is as follows: Use a high-pressure water gun to clean the surface of the base layer to ensure that the base layer is solid and flat, without loose soil, impurities, etc. For stubborn pollutants such as oil stains, organic solvents can be used for cleaning, but the operation must be carried out in a well-ventilated environment to avoid harm to the human body caused by solvent volatilization; Among them, the base crack treatment is to clean the cracks, remove the debris and dust in the cracks, fill the inner cracks with polymer mortar, fill the caulking material into the cracks, compact and smooth it to make it flush with the base surface, and after the caulking material is dry, grind it to make its surface smooth and flat.

3. The energy-saving self-protective roof waterproofing construction method according to claim 1 is characterized in that: The method for laying the thermal insulation layer is: Prepare EPS particles, sulphoaluminate cement and waterproofing agent in a mass ratio of 1.8:1:0.03, prepare mechanical mixing equipment, put EPS particles, sulphoaluminate cement and waterproofing agent into a mixer in the above ratio, and perform mechanical mixing. Ensure that the mixing time is not less than 3 minutes to ensure that the materials are fully mixed; When pouring the first layer, use a laser locator to control the slope to ensure that the slope is 2%, and then use a scraper to initially level the mixed slurry to ensure a smooth surface; The second layer is poured and embedded in the reinforcement layer. Before the first layer of slurry solidifies, lay the glass fiber mesh cloth and press it into the unsolidified slurry to ensure that it is completely embedded. Note that the overlap width of the glass fiber mesh cloth should be no less than 10cm to ensure the continuity and strength of the overall structure. The waterproofing agent is a water-based penetrating crystalline waterproofing agent.

4. The energy-saving self-protective roof waterproofing construction method according to claim 1 is characterized in that: The method for laying the leveling layer is: Divide the construction area into multiple single warehouses, each with an area not exceeding 9m²; Prepare fiber-reinforced dry-mix mortar with a polypropylene fiber content of 0.9kg / m³. Then use mechanical spraying equipment to evenly spray the fiber-reinforced dry-mix mortar on the predetermined area. Control the outlet pressure of the spray gun to 0.6MPa to ensure uniform distribution and appropriate thickness of the mortar. Adjust the moving speed of the spray gun to 0.8m / s to ensure that the single-shot molding thickness reaches 20mm. After the mortar is initially set, a secondary calendering treatment is carried out, using iron trowels and plastic trowels alternately to improve the surface flatness and density. Before the mortar is finally set, a silane-based curing agent is sprayed to form a protective film with a thickness of 0.1 mm to enhance the mortar's impermeability and durability; Make sure that the construction interval between adjacent bins is at least 6 hours to ensure that the mortar has sufficient hardening time.

5. The energy-saving self-protective roof waterproofing construction method according to claim 1 is characterized in that: The method for laying the waterproof layer is: Use water-based epoxy interface agent to brush the base layer, the coating amount is 0.4kg / m², wait for the interface agent to dry, and ensure that the surface of the base layer is dry and not greasy. After the interface agent is dry; Start laying TPO membranes, use the pre-laying reverse-adhesion process to lay the TPO membranes on the base layer, ensure that the membranes fit closely with the base layer, and control the overlap width of the TPO membranes to 80mm to ensure the sealing of the joints; After the TPO coil is laid, use hot air welding equipment to weld the coil, and weld evenly along the overlap of the coil to ensure the welding quality. Pay attention to the changes of the coil during welding to ensure uniform welding and no leakage. The temperature of the hot air welding equipment is 400-450°C, the wind speed is adjusted to 0.5m / s, and the moving speed of the welding gun is controlled to 0.3m / min.

6. The energy-saving self-protective roof waterproofing construction method according to claim 1 is characterized in that: The method for laying the protective layer is: The method for laying the protective layer is: Prepare polymer cement-based waterproof mortar, add 5% silica aerogel according to the requirements of anti-seepage grade P10, then lay the waterproof mortar on the ground with a thickness of 15mm, and then press basalt chopped fibers on the mortar surface with a fiber length of 12mm and a dosage of 2kg / m³. After pressing in; Use a trowel to compact and smooth it.

7. The energy-saving self-protective roof waterproofing construction method according to claim 1 is characterized in that: The method for laying the waterproof coating layer is: First clean the surface of the protective layer to remove dust; Then, for the first coat, use a notched trowel, keep the trowel at a 45° angle to the base surface, and start to coat the silicone acrylic reflective thermal insulation coating. Control the coating thickness to 0.3mm, and perform the coating operation in a certain direction. After the first coat is completed, wait for the coating to dry at intervals of 2 hours. During this period, avoid stepping on or touching the construction surface. Finally, for the second spraying, after the first coat of paint is dry, use an airless sprayer to spray the second coat of paint, set the sprayer pressure to 20MPa, keep the spray gun perpendicular to the surface of the base and the distance even during spraying, control the spraying thickness to 0.2mm, and evenly spray the silicone-acrylic reflective thermal insulation paint on the surface. When the second coat of paint is not dry, quickly use a spreading tool to evenly sprinkle the calcined kaolin particles on the coating surface to fully combine the particles with the coating.

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