Construction method of net-shaped non-cured rubber asphalt composite waterproof system

Abstract

The application is particularly a kind of grid non-cured rubber asphalt composite waterproof system - waterproof isolation belt construction method; including steps 1, base cleaning; step 2, grid construction axis positioning; step 3, spraying cold primer on SBS modified asphalt waterproof roll material; step 4, acceptance; step 5, scraping non-cured rubber asphalt waterproof coating; step 6, laying SBS; step 7, edge pressing; step 8, acceptance. The waterproof isolation belt set by the non-cured rubber asphalt waterproof coating can reduce the large-area brushing of the non-cured rubber asphalt waterproof coating and can block the water leakage across the grid isolation belt of the non-cured rubber asphalt waterproof coating component, thereby eliminating the seepage water from the concrete base surface under the waterproof roll material along the cavity part, avoiding the large-area repair of the basement roof and outer wall when leakage occurs, and saving cost.

Description

Technical Field

[0001] This invention relates to the field of structural waterproofing technology for basements, specifically a construction method for a grid-type non-curing rubber asphalt composite waterproofing system—a waterproof isolation strip. Background Technology

[0002] Currently, to make full use of limited urban space, underground engineering has been widely promoted, and underground garages generally feature large-span beam-slab structures. Once leakage occurs in the garage roof slab and side walls, the leaking water flows through the cavities in the concrete base under the waterproof membrane, requiring a large investment of manpower and materials to repair the garage roof slab and exterior walls over a large area, and it is difficult to find the leakage point and completely prevent leakage. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects and propose a method that prevents water leakage from flowing through the cavity of the concrete base surface under the waterproof membrane by applying a small area of ​​non-curing rubber asphalt waterproof coating, thus avoiding large-area repairs to the basement roof and exterior walls when leakage occurs and saving costs.

[0004] To achieve the above objectives, the present invention is implemented as follows: A method for constructing a mesh-type non-curing rubber asphalt composite waterproofing system—a waterproof isolation strip, including... Step 1: Cleaning the base layer; Step 2: Grid-based construction axis positioning; Step 3: Spray cold primer on the area where the SBS modified bitumen waterproof membrane is laid; Step 4: Acceptance; Step 5: Apply non-curing rubber asphalt waterproof coating by scraping. Step 6: Lay out SBS; Step 7: Press the edges to seal; Step 8: Acceptance; in, Step 1: Base cleaning Step 1.1: The waterproof base surface should be flat, firm, clean and dry, and meet the design requirements. The cement mortar should be smoothed and polished twice after the water has settled, and fully cured. There should be no loose, sandy, peeling or hollow phenomena. Step 1.2: The base layer must be clean, dry, and flat. The flatness of the leveling layer should be checked with a 2-meter straightedge. The maximum gap between the base layer and the straightedge should not exceed 5mm, and the gap should be gradual. Step 1.3: Confirm that the embedded components and accessories have been installed and securely fixed. Step 1.4: The inside and outside corners should be made uniform and consistent. The inside corners should be smooth and flat arcs, and the outside corners should be obtuse arcs with a radius of 50mm. The width of the additional waterproof membrane layer at the inside and outside corners should not be less than 500mm, and not less than 250mm on each side. The additional membrane layer should be made of 3mm thick polyester-based SBS modified bitumen waterproof membrane. Furthermore, when applying SBS modified bitumen waterproof membrane using the hot-melt method, inadequate substrate preparation (e.g., uneven substrate, rough surface) can lead to weak adhesion or blistering of the membrane. If there are leaks in the SBS modified bitumen waterproof membrane, water will flow freely beneath it. In this case, the grid-like design of the non-curing rubber bitumen waterproof coating, which divides the large basement roof and exterior walls into several small units in a "nine-square grid" pattern, effectively limits the water flow, making it easier to pinpoint leaks and significantly improving waterproofing and leak-stopping efficiency. For the reasons mentioned above, step 2, grid-based construction axis positioning, is also included: dividing the large-area basement roof slab and exterior walls into several small units in a "nine-square grid" format; Step 2.1, Basement roof grid design; Step 2.1.1: Estimate the distribution of through-type cracks in the basement roof slab; 1) Commonly used concrete shrinks in volume during the hardening process, and under the action of temperature stress and load, it will produce through cracks. 2) During the use of the basement roof slab, due to the action of live load, the non-penetrating cracks in the basement roof slab gradually become penetrating. According to the force principle of the slab span, it can be known that under the action of dynamic load, the amplitude of the slab at the middle of the span is larger than that at the edge of the slab. Compared with the edge of the slab, the middle of the slab will form dense penetrating cracks. 3) Based on the actual situation, due to the high reinforcement ratio of the structural beams, the concrete shrinkage is greatly restricted and the concrete shrinkage is relatively uniform, making it less prone to cracking. At the same time, it also restricts the cracking of the slab at the edge of the floor slab connected to the beam. Therefore, through cracks are usually distributed in the center of the basement roof slab. Step 2.1.2: Estimate the distribution of through-cracks in the sidewalls; The basement exterior walls are extremely long structural members, subject to high stress, making them highly susceptible to vertical cracks. Defects during concrete construction further exacerbate the failure of the concrete's self-waterproofing properties. Additionally, rainwater from the basement roof and garden irrigation water drain into the ground along the exterior walls. Since the floor slabs only bear their own dead load and live load, they do not develop longitudinal cracks similar to those found in vertical structural members. Therefore, longitudinal cracks in the walls tend to terminate at the junction of the floor slab and the wall, constrained by the floor slab. Furthermore, in areas with thicker T-shaped shear walls and buttresses, although subjected to longitudinal loads, the likelihood of through-cracks is virtually zero compared to larger wall sections, as the load design value and ultimate bearing capacity coefficient of structural members are constant. Therefore, longitudinal cracks are more likely to form in areas without slabs, T-shaped walls, or buttresses. Step 2.2: Laying out the lines; Draw a schematic diagram based on the results estimated in step 2.1, and lay out the center lines of the beams on the basement roof slab, as well as the center lines of the side wall buttresses and T-shaped shear walls; Step 3: Spray cold primer on the area where the SBS modified bitumen waterproof membrane is laid; After the base layer is dry, apply a base treatment agent; use a long-handled roller to apply cold primer to the clean, dry base surface, and use a paint brush to apply it to corners and complex areas, ensuring no bare spots, and applying it evenly and with consistent thickness. Do not repeatedly roller or miss areas, and avoid pitting or exposed base. Allow it to dry for at least 4 hours until it is no longer sticky to the touch before proceeding to the next step. Applying cold primer removes dust from the base surface, providing a clean base for the waterproof layer. The presence of loose dirt will not weaken the adhesion between the waterproof layer and the base surface. The cold primer penetrates into the capillary pores of the base layer, which is equivalent to asphalt nailing into the base layer, increasing the adhesion between the waterproof layer and the base layer, and also acting as a sealant for the base surface. Step 5: Apply non-curing rubber asphalt waterproof coating by scraping. Step 5.1: Grid layout for the basement roof slab; When laying out the grid, it is set up according to the areas where cracks are relatively sparse. Therefore, based on the top axis of the beam, a non-curing rubber asphalt waterproof coating isolation strip is constructed with a coating width of 200mm and a thickness of 2mm. Step 5.2, Sidewall Grid Layout; During construction, construction joints are set at the upper part of the junction between the floor slab and the wall on each floor. The specific height of the joints needs to be determined according to the drawings. Using the construction joints as a reference, a horizontal non-curing rubber asphalt waterproof coating isolation strip is established to reinforce the construction joints. Extending along the underground exterior wall, a vertical non-curing rubber asphalt waterproof coating isolation strip is set at the location of the buttress column or T-shaped wall. The horizontal and vertical isolation strips intersect to form a non-curing rubber asphalt waterproof coating isolation net, which is the structural underground exterior wall mesh design. Its working principle is the same as that of the basement roof slab, and the repair process is relatively easy and cost-effective. Step 6: Lay SBS using the hot melt method; When laying waterproof membrane, apply non-curing rubber asphalt waterproof coating at the same time. The overlap between membranes should achieve 100% hot melt adhesion. When heating, use a tool to lift and separate the overlap membranes, and heat in the gap between the membranes. After heating, use a hand roller to compact and squeeze out an appropriate amount of asphalt strips. The asphalt strips are then sealed with a trowel to achieve the waterproof effect. Step 6.1: For the additional layer at the inside and outside corners and the laying of the roof roll material, the full-adhesion method is used; for the laying of large areas of roof roll material, the loose-laying method is used. Step 6.2, Full Adhesion of Additional Layer: The additional layer of SBS waterproof membrane is laid using the hot-melt method. When fusion bonding the ends of the membrane, place the neatly cut membrane at the starting end of the laying, align it with the chalk line marked on the base layer, and roll the membrane about 1m. One person holds the membrane while another person uses a blowtorch flame to heat the bottom surface of the membrane and the base layer at the junction of the membrane and the base layer. When the adhesive on the bottom surface of the membrane becomes molten, the membrane is bonded. Then, one person uses a hand roller to air out and compact the laid membrane. Step 6.3: The nozzle of the flame heater should be at an appropriate distance from the surface of the roll material; heating should be uniform and consistent within the width of the roll material, and the roll material should be heated until it is shiny black. Insufficient melting will affect the bonding strength; excessive heating will cause the modified asphalt to age and char, which will not only lose its bonding but also easily burn through the roll material. Step 6.4, Laying SBS membrane using a chalk line: On the prepared base surface, according to the width of the selected membrane, leave the overlap size, with the long side being 100mm and the short side being 100mm. Mark the baseline for laying the membrane and lay the membrane according to this baseline. After laying, the membrane should be flat and straight, with correct overlap dimensions, and should not be twisted. Step 6.5: The long side overlap of each roll should not be less than 100mm, the short side overlap should not be less than 100mm, the short side joint of two adjacent rolls should be greater than 1000mm, the joint should be pressed twice with a pressure roller, the pressing edges of the upper and lower rolls should be offset by 1 / 3 of the roll width; the joints of the upper and lower layers and adjacent rolls should be staggered by 30~50cm. Step 7: Press the edges to seal; Step 7.1: When using the hot melt method for construction, the heating should be uniform. Insufficient heating or burning through the roll material is not allowed. Hot melt modified asphalt should overflow at the lap joint. The hot melt adhesive should be applied to the desired degree and the joint should be immediately sealed to ensure that the joint is tightly and firmly bonded. Step 7.2: After the surface of the roll material is hot-melted, roll it out immediately. The roll should be laid flat and straight, with accurate overlap dimensions. It should not be twisted. When rolling, the air under the roll material should be removed to make it flat and wrinkle-free. It should be rolled and pressed firmly to bond it. Step 7.3: Use a hot melt overlap sealing machine to fully bake the asphalt coating layer on the bottom surface of the upper layer of the roll material and the top surface of the lower layer of the roll material at the overlap. It is necessary to ensure that the asphalt between the roll materials at the overlap is densely fused and that molten asphalt is squeezed out from the edge to form a uniform asphalt strip with a width of about 5-8mm, so as to seal the joint and achieve the effect of waterproofing.

[0005] The above-mentioned construction method for the mesh-type non-curing rubber asphalt composite waterproofing system—waterproof isolation strip—also includes... Step 9: Repair and fill leaks; After the waterproofing of the basement roof slab was completed, leakage occurred. Due to the layout of the cracks in the slab, the floor slab corresponding to the vertical direction of the leakage point would also leak, especially in the center of the floor slab. Therefore, the area where the waterproof membrane leaked was identified, and the grid area corresponding to the leaking floor slab was grouted to repair the leakage.

[0006] This construction method has the following advantages: ①. The waterproof isolation strip of the basement roof slab utilizes the good compatibility between non-curing rubber asphalt waterproof coating and SBS modified bitumen waterproof membrane to successfully confine the leakage water at the defective parts of the waterproof membrane within the same slab span. When leakage occurs, the leaking floor slab is repaired, thereby achieving the effect of leakage repair. The repair process becomes simple and efficient. ②. The grid-like structure of the non-curing rubber asphalt waterproof coating on the wall is based on the cold joints reserved during construction. This not only provides waterproofing for the cold joints but also divides the area into grids, which is beneficial for repairing waterproof leaks. ③. Compared with leakage repair without waterproof isolation strips, this method saves costs, reduces manpower and material input, and is simple and efficient.

[0007] The waterproof isolation strip created by using non-curing rubber asphalt waterproof coating not only reduces the need for large-area application of the coating but also prevents leaking water from flowing across the mesh isolation strip of the non-curing rubber asphalt waterproof coating component. This prevents leaking water from flowing through the cavities in the concrete basement beneath the waterproof membrane, avoiding extensive repairs to the basement roof and exterior walls in the event of a leak, thus saving costs. Furthermore, this waterproof isolation strip is laid using beams, wall buttresses, and T-shaped walls, requiring a small cross-sectional dimension and minimal additional cost, resulting in good overall economic benefits. Attached Figure Description

[0008] Figure 1 Treatment of the inside and outside corners of the waterproof base layer (the waterproof membrane used is polyester-based SBS modified bitumen waterproof membrane).

[0009] Figure 2 A schematic diagram showing the distribution of cracks in the roof slab of the basement.

[0010] Figure 3 Schematic diagram of cracks in the exterior wall of the basement.

[0011] Figure 4 Schematic diagram of the detailed structure of the grid-like design for the roof slab of the basement.

[0012] Figure 5 A detailed structural diagram of the waterproof layer in the waterproof isolation strip area.

[0013] Figure 6 1. Structural underground exterior wall grid design.

[0014] Figure 7 Schematic diagram of the detailed waterproofing process for the side walls. Detailed Implementation

[0015] The present invention will be further illustrated below through specific embodiments.

[0016] A method for constructing a mesh-type non-curing rubber asphalt composite waterproofing system—a waterproof isolation strip, including... Step 1: Cleaning the base layer; Step 2: Grid-based construction axis positioning; Step 3: Spray cold primer on the area where the SBS modified bitumen waterproof membrane is laid; Step 4: Acceptance; Step 5: Apply non-curing rubber asphalt waterproof coating by scraping. Step 6: Lay out SBS; Step 7: Press the edges to seal; Step 8: Acceptance; in, Step 1: Base cleaning Step 1.1: The waterproof base surface should be flat, firm, clean and dry, and meet the design requirements. The cement mortar should be smoothed and polished twice after the water has settled, and fully cured. There should be no loose, sandy, peeling or hollow phenomena. Step 1.2: The base layer must be clean, dry, and flat. The flatness of the leveling layer should be checked with a 2-meter straightedge. The maximum gap between the base layer and the straightedge should not exceed 5mm, and the gap should be gradual. Step 1.3: Confirm that the embedded components and accessories have been installed and securely fixed. Step 1.4: The inside and outside corners should be uniformly made. Inside corners should be smooth, rounded arcs, and outside corners should be obtuse angles, all with a radius of 50mm. The width of the additional waterproof membrane layer at the inside and outside corners should be no less than 500mm, with each side no less than 250mm. The additional membrane layer should be a 3mm thick polyester-reinforced SBS modified bitumen waterproof membrane. (e.g.) Figure 1 ) Step 2, grid-based construction axis positioning: Divide the large basement roof slab and exterior walls into several small units in a "nine-square grid" format; Step 2.1, Basement roof grid design; Step 2.1.1: Estimate the distribution of through-type cracks in the basement roof slab; ① Commonly used concrete shrinks in volume during the hardening process, and under the action of temperature stress and load, it will produce through cracks. ② During the use of the basement roof slab, due to the action of live load, the non-penetrating cracks in the basement roof slab gradually become continuous. According to the force principle of the slab span, it can be known that under the action of dynamic load, the amplitude of the slab at the middle of the span is larger than that at the edge of the slab. Compared with the edge of the slab, the middle of the slab will form dense continuous cracks. ③ According to the actual situation, due to the high reinforcement ratio of the structural beam, the concrete shrinkage is greatly restricted and the concrete shrinkage is relatively uniform, making it less prone to cracking. At the same time, it also restricts the cracking of the slab at the edge of the floor slab connected to the beam. Therefore, through cracks are usually distributed in the center of the basement roof slab. Step 2.1.2: Estimate the distribution of through-cracks in the sidewalls; The basement exterior walls, being exceptionally long structural members, experience significant stress and are highly susceptible to vertical cracks. Defects during concrete construction further exacerbate the failure of the concrete's self-waterproofing properties. Additionally, rainwater from the basement roof and irrigation water from landscaping drains into the ground along the exterior walls. Since the floor slabs only bear their own dead load and live load, they do not develop longitudinal cracks similar to those found in vertical structural members. Therefore, longitudinal cracks in the walls tend to terminate at the floor slab-wall junction, constrained by the slab. Furthermore, at T-shaped shear walls and buttresses, due to the greater wall thickness, although subjected to longitudinal loads, the likelihood of through-cracks is virtually zero compared to larger wall sections, as the load design values ​​and ultimate bearing capacity coefficients of structural members are constant. Therefore, longitudinal cracks tend to concentrate in areas without slabs, T-shaped walls, or buttresses (such as...). Figure 3 ); Step 2.2: Laying out the lines; Draw a schematic diagram based on the results estimated in step 2.1, and lay out the center lines of the beams on the basement roof slab, as well as the center lines of the side wall buttresses and T-shaped shear walls; Step 3: Spray cold primer on the area where the SBS modified bitumen waterproof membrane is laid; After the base layer is dry, apply a base treatment agent; use a long-handled roller to apply cold base oil to the clean and dry base surface, and use a paint brush to apply it to the inside and outside corners and complex areas, ensuring that there are no white gaps, and that the application is even and of consistent thickness. Do not repeatedly roll or miss any areas, and there should be no pitting or exposed base. The next process can only be carried out after it has dried for more than 4 hours until it is no longer sticky to the feet. Step 5: Apply non-curing rubber asphalt waterproof coating by scraping. Step 5.1: Grid layout for the basement roof slab; The grid was laid out according to the areas where cracks were relatively sparse. Therefore, a non-curing rubber asphalt waterproof coating isolation strip was constructed based on the beam top axis, with a coating width of 200mm and a thickness of 2mm. The distribution pattern is shown in [details omitted]. Figure 4 For details of the waterproof barrier section, see Figure 5 ; Step 5.2, Sidewall Grid Layout; During construction, construction joints are set at the upper part of the junction between the floor slab and the wall on each floor. The specific height of the upward movement needs to be determined according to the drawings. Using the construction joint as a reference, a horizontal non-curing rubber asphalt waterproof coating isolation strip is established to reinforce the construction joint. Extending along the underground exterior wall, a vertical non-curing rubber asphalt waterproof coating isolation strip is set at the location of the buttress column or T-shaped wall. The horizontal and vertical isolation strips intersect to form a non-curing rubber asphalt waterproof coating isolation net, i.e., the structural underground exterior wall mesh design (e.g.) Figure 6 Its working principle is the same as that of the basement roof slab, the repair process is relatively easy, and it saves costs. The waterproof details of the isolation zone are as follows: Figure 7 ; Step 6: Lay SBS using the hot melt method; When laying waterproof membrane, apply non-curing rubber asphalt waterproof coating at the same time. The overlap between membranes should achieve 100% hot melt adhesion. When heating, use a tool to lift and separate the overlap membranes, and heat in the gap between the membranes. After heating, use a hand roller to compact and squeeze out an appropriate amount of asphalt strips. The asphalt strips are then sealed with a trowel to achieve the waterproof effect. Step 6.1: For the additional layer at the inside and outside corners and the laying of the roof roll material, the full-adhesion method is used; for the laying of large areas of roof roll material, the loose-laying method is used. Step 6.2, Full Adhesion of Additional Layer: The additional layer of SBS waterproof membrane is laid using the hot-melt method. When fusion bonding the ends of the membrane, place the neatly cut membrane at the starting end of the laying, align it with the chalk line marked on the base layer, and roll the membrane about 1m. One person holds the membrane while another person uses a blowtorch flame to heat the bottom surface of the membrane and the base layer at the junction of the membrane and the base layer. When the adhesive on the bottom surface of the membrane becomes molten, the membrane is bonded. Then, one person uses a hand roller to air out and compact the laid membrane. Step 6.3: The nozzle of the flame heater should be at an appropriate distance from the surface of the roll material; heating should be uniform and consistent within the width of the roll material, and the roll material should be heated until it is shiny black. Insufficient melting will affect the bonding strength; excessive heating will cause the modified asphalt to age and char, which will not only lose its bonding but also easily burn through the roll material. Step 6.4, Laying SBS membrane using a chalk line: On the prepared base surface, according to the width of the selected membrane, leave the overlap size, with the long side being 100mm and the short side being 100mm. Mark the baseline for laying the membrane and lay the membrane according to this baseline. After laying, the membrane should be flat and straight, with correct overlap dimensions, and should not be twisted. Step 6.5: The long side overlap of each roll should not be less than 100mm, the short side overlap should not be less than 100mm, the short side joint of two adjacent rolls should be greater than 1000mm, the joint should be pressed twice with a pressure roller, the pressing edges of the upper and lower rolls should be offset by 1 / 3 of the roll width; the joints of the upper and lower layers and adjacent rolls should be staggered by 30~50cm. Step 7: Press the edges to seal; Step 7.1: When using the hot melt method for construction, the heating should be uniform. Insufficient heating or burning through the roll material is not allowed. Hot melt modified asphalt should overflow at the lap joint. The hot melt adhesive should be applied to the desired degree and the joint should be immediately sealed to ensure that the joint is tightly and firmly bonded. Step 7.2: After the surface of the roll material is hot-melted, roll it out immediately. The roll should be laid flat and straight, with accurate overlap dimensions. It should not be twisted. When rolling, the air under the roll material should be removed to make it flat and wrinkle-free. It should be rolled and pressed firmly to bond it. Step 7.3: Use a hot melt overlap sealing machine to fully bake the asphalt coating layer on the bottom surface of the upper layer of the roll material and the top surface of the lower layer of the roll material at the overlap. It is necessary to ensure that the asphalt between the roll materials at the overlap is densely fused and that molten asphalt is squeezed out from the edge to form a uniform asphalt strip with a width of about 5-8mm, so as to seal the joint and achieve the effect of waterproofing.

[0017] The above-mentioned construction method for the mesh-type non-curing rubber asphalt composite waterproofing system—waterproof isolation strip—also includes... Step 9: Repair and fill leaks; After the waterproofing of the basement roof slab was completed, leakage occurred. Due to the layout of the cracks in the slab, the floor slab corresponding to the vertical direction of the leakage point would also leak, especially in the center of the floor slab. Therefore, the area where the waterproof membrane leaked was identified, and the grid area corresponding to the leaking floor slab was grouted to repair the leakage.

Claims

1. A construction method for a grid-type non-curing rubber asphalt composite waterproofing system, characterized in that: include Step 1: Cleaning the base layer; Step 2: Grid-based construction axis positioning; Step 3: Spray cold primer on the area where the SBS modified bitumen waterproof membrane is laid; Step 4: Acceptance; Step 5: Apply non-curing rubber asphalt waterproof coating by scraping. Step 6: Lay out SBS; Step 7: Press the edges to seal; Step 8: Acceptance; in, Step 1: Base cleaning Step 1.1: The waterproof base surface should be flat, firm, clean and dry, and meet the design requirements. The cement mortar should be smoothed, the water should be absorbed, and it should be polished twice. It should be fully cured and there should be no loose, sandy, peeling or hollow phenomena. Step 1.2: The base layer must be clean, dry, and flat. The flatness of the leveling layer should be checked with a 2-meter straightedge. The maximum gap between the base layer and the straightedge should not exceed 5mm, and the gap should be gradual. Step 1.3: Confirm that the embedded components and accessories have been installed and securely fixed. Step 1.4: The inside and outside corners should be made uniform and consistent. The inside corners should be smooth and flat arcs, and the outside corners should be obtuse arcs with a radius of 50mm. The width of the additional waterproof membrane layer at the inside and outside corners should not be less than 500mm, and not less than 250mm on each side. The additional membrane layer should be made of 3mm thick polyester-based SBS modified bitumen waterproof membrane. Step 2, grid-based construction axis positioning: Divide the large basement roof slab and exterior walls into several small units in a nine-square grid format; Step 2.1, Basement roof grid design; Step 2.1.1: Estimate the distribution of through-type cracks in the basement roof slab; 1) Commonly used concrete shrinks in volume during the hardening process, and under the action of temperature stress and load, it will produce through cracks. 2) During the use of the basement roof slab, due to the action of live load, the non-penetrating cracks in the basement roof slab gradually become penetrating. According to the force principle of the slab span, it can be known that under the action of dynamic load, the amplitude of the slab at the middle of the span is larger than that at the edge of the slab. Compared with the edge of the slab, the middle of the slab will form dense penetrating cracks. 3) Based on the actual situation, due to the high reinforcement ratio of the structural beams, the concrete shrinkage is greatly restricted and the concrete shrinkage is relatively uniform, making it less prone to cracking. At the same time, it also restricts the cracking of the slab at the edge of the floor slab connected to the beam. Therefore, through cracks are distributed in the center of the basement roof slab. Step 2.1.2: Estimate the distribution of through-cracks in the sidewalls; The basement exterior walls are extremely long structural members, subject to high stress, making them highly susceptible to vertical cracks. Defects during concrete construction further exacerbate the failure of the concrete's self-waterproofing properties. Additionally, rainwater from the basement roof and garden irrigation water drain into the ground along the exterior walls. Since the floor slabs only bear their own dead load and live load, they do not develop longitudinal cracks similar to those found in vertical structural members. Therefore, longitudinal cracks in the walls tend to terminate at the junction of the floor slab and the wall, constrained by the floor slab. Furthermore, in areas with thicker T-shaped shear walls and buttresses, although subjected to longitudinal loads, the likelihood of through-cracks is virtually zero compared to larger wall sections, as the load design value and ultimate bearing capacity coefficient of structural members are constant. Therefore, longitudinal cracks are more likely to form in areas without slabs, T-shaped walls, or buttresses. Step 2.2: Laying out the lines; Draw a schematic diagram based on the results estimated in step 2.1, and lay out the center lines of the beams on the basement roof slab, as well as the center lines of the side wall buttresses and T-shaped shear walls; Step 3: Spray cold primer on the area where the SBS modified bitumen waterproof membrane is laid; After the base layer is dry, apply a base treatment agent; use a long-handled roller to apply cold base oil to the clean and dry base surface, and use a paint brush to apply it to the inside and outside corners and complex areas, ensuring that there are no white gaps, and that the application is even and of consistent thickness. Do not repeatedly roll or miss any areas, and there should be no pitting or exposed base. The next process can only be carried out after it has dried for more than 4 hours until it is no longer sticky to the feet. Step 5: Apply non-curing rubber asphalt waterproof coating by scraping. Step 5.1: Grid layout for the basement roof slab; When laying out the grid, it is set up according to the areas where cracks are relatively sparse. Therefore, based on the top axis of the beam, a non-curing rubber asphalt waterproof coating isolation strip is constructed with a coating width of 200mm and a thickness of 2mm. Step 5.2, Sidewall Grid Layout; During construction, construction joints are set at the upper part of the junction between the floor slab and the wall on each floor. The specific height of the joints needs to be determined according to the drawings. Using the construction joints as a reference, a horizontal non-curing rubber asphalt waterproof coating isolation strip is established to reinforce the construction joints. Extending along the underground exterior wall, a vertical non-curing rubber asphalt waterproof coating isolation strip is set at the location of the buttress column or T-shaped wall. The horizontal and vertical isolation strips intersect each other to form a non-curing rubber asphalt waterproof coating isolation net, which is the structural underground exterior wall mesh design. Step 6: Lay SBS using the hot melt method; When laying waterproof membrane, apply non-curing rubber asphalt waterproof coating at the same time. The overlap between membranes should achieve 100% hot melt adhesion. When heating, use a tool to lift and separate the overlap membranes, and heat in the gap between the membranes. After heating, use a hand roller to compact and squeeze out an appropriate amount of asphalt strips. The asphalt strips are then sealed with a trowel to achieve the waterproof effect. Step 6.1: For the additional layer at the inside and outside corners and the laying of the roof roll material, the full-adhesion method is used; for the laying of large areas of roof roll material, the loose-laying method is used. Step 6.2, Full Adhesion of Additional Layer: The additional layer of SBS waterproof membrane is laid using the hot-melt method. When fusion bonding the ends of the membrane, place the neatly cut membrane at the starting end of the laying, align it with the chalk line marked on the base layer, and roll the membrane about 1m. One person holds the membrane while another person uses a blowtorch flame to heat the bottom surface of the membrane and the base layer at the junction of the membrane and the base layer. When the adhesive on the bottom surface of the membrane becomes molten, it is laid. Then, one person uses a hand roller to air out and compact the laid membrane. Step 6.3: The nozzle of the flame heater should be at an appropriate distance from the surface of the roll material; heating should be uniform and consistent within the width of the roll material. Heating until the surface of the roll material is shiny black is insufficient and will affect the bonding strength; excessive heating will cause the modified asphalt to age and char, which will not only lose its bonding but also easily burn through the roll material. Step 6.4, Laying SBS membrane using a chalk line: On the prepared base surface, according to the width of the selected membrane, leave the overlap size, with the long side being 100mm and the short side being 100mm. Mark the baseline for laying the membrane and lay the membrane according to this baseline. After laying, the membrane should be flat and straight, with correct overlap dimensions, and should not be twisted. Step 6.5: The long side overlap of each roll should not be less than 100mm, the short side overlap should not be less than 100mm, the short side joint of two adjacent rolls should be greater than 1000mm, the joint should be pressed twice with a pressure roller, the pressing edges of the upper and lower rolls should be staggered by 1 / 3 of the roll width; the joints of the upper and lower layers and adjacent rolls should be staggered by 30~50cm. Step 7: Press the edges to seal; Step 7.1: When using the hot-melt method, the heating should be uniform. Insufficient heating or burning through the membrane is not allowed. Hot-melt modified asphalt should overflow at the lap joints, and the joints should be immediately sealed to ensure that the joints are tightly and firmly bonded. Step 7.2: After the surface of the roll material is hot-melted, roll it out immediately. The roll should be laid flat and straight, with accurate overlap dimensions. It should not be twisted. When rolling, air under the roll material should be removed to make it flat and wrinkle-free. It should be rolled and bonded firmly. Step 7.3: Use a hot melt overlap sealing machine to fully bake the asphalt coating layer on the bottom surface of the upper layer of the roll material and the top surface of the lower layer of the roll material at the overlap. It is necessary to ensure that the asphalt between the roll materials at the overlap is densely fused and that molten asphalt is squeezed out from the edge to form a uniform asphalt strip with a width of about 5-8mm, so as to seal the joint and achieve the effect of waterproofing.

2. The construction method of the grid-type non-curing rubber asphalt composite waterproofing system according to claim 1, characterized in that: Also includes Step 9: Repair and fill leaks; After the waterproofing construction of the basement roof slab was completed, leakage occurred in the basement roof slab. Due to the layout characteristics of the cracks in the slab, leakage would occur at the center of the floor slab in the vertical direction of the leakage point. Thus, the area where the waterproof membrane leaked was identified, and the grid area corresponding to the leaking floor slab was grouted to repair the leakage.

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