Waterproof construction technology based on concrete self-waterproofing and SBS coiled material

Abstract

The invention relates to the technical field of building waterproof construction, in particular to a waterproof construction technology based on concrete self-waterproofing and an SBS coiled material, and the waterproof construction technology comprises waterproof concrete, the SBS coiled material and an intelligent detection system; the waterproof concrete is prepared from 42.5-grade Portland cement, II-grade fly ash, a composite waterproof agent, basalt fibers, a high-efficiency water reducing agent and a UEA expanding agent. The SBS coiled material adopts a three-layer composite structure and comprises a bottom layer, a middle layer and a surface layer, the intelligent detection system comprises an implantable humidity sensor array and a data feedback module. A rigid-flexible combined system is formed by the concrete self-waterproof layer and the SBS coiled material, and the anti-permeability performance is remarkably improved compared with that of a single material; a concrete-SBS synchronous construction process is developed, accurate laying of coiled materials is achieved by pre-burying positioning pins, and the construction efficiency is improved; and the humidity monitoring system can early warn the leakage risk in advance, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of building waterproof construction, and specifically to a waterproof construction technology based on self - waterproof concrete and SBS coils. Background Art

[0002] In the building engineering system, the quality of waterproof construction has a decisive impact on the structural stability, service life of buildings, and the applicability of the internal space. Traditional waterproof strategies mainly focus on two major types: self - waterproof concrete and coil waterproofing. Self - waterproof concrete mainly relies on adding specific admixtures to the concrete mixture to promote the formation of a dense waterproof structure within the concrete itself; however, during the actual construction process, concrete is vulnerable to various factors such as temperature changes, humidity differences, foundation settlement, and insufficient construction vibration, inevitably resulting in cracks; once cracks appear, water can penetrate along these gaps, severely weakening the original waterproof effect of the concrete and threatening the overall safety of the building. SBS coil waterproofing is widely used in waterproof projects due to its excellent flexibility, good weather resistance, and strong anti - deformation ability; however, during the construction of SBS coils, the overlapping parts between the coils and the bonding areas between the coils and the base layer often become high - risk points for leakage due to the difficulty in controlling the construction process and the unstable performance of the bonding materials; once leakage occurs in these key parts, not only is the repair extremely difficult, but it will also cause serious damage to the interior decoration, equipment, etc. of the building. How to deeply integrate the advantages of self - waterproof concrete and SBS coil waterproofing, overcome the difficulties in the actual application of existing waterproof technologies, and develop a waterproof construction technology with high reliability and durability has become the core problem urgently needed to be solved in the field of building waterproofing.

[0003] Therefore, those skilled in the art have provided a waterproof construction technology based on self - waterproof concrete and SBS coils to solve the problems raised in the above background art. Summary of the Invention

[0004] To solve the above - mentioned technical problems, the present invention provides a waterproof construction technology based on self - waterproof concrete and SBS coils. By systematically optimizing the construction process, accurately proportioning materials, and innovating process details, it effectively overcomes the defects of existing waterproof technologies, significantly improves the quality of building waterproof projects, and ensures that the building has excellent waterproof performance throughout its life cycle.

[0005] It includes waterproof concrete, SBS coils, and an intelligent detection system; The waterproof concrete includes: 42.5-grade portland cement that provides early strength and hardness of the concrete as the basic cementitious material, Class II fly ash that improves the performance of the concrete as a blending material, a composite waterproofing agent that enhances the waterproof performance of the concrete, basalt fibers that strengthen the mechanical properties of the concrete, a high-range water reducer that optimizes the workability and strength of the concrete, and a UEA expansive agent that compensates for the shrinkage of the concrete and reduces cracking; The SBS coil adopts a three-layer composite structure, including a bottom layer, a middle layer, and a surface layer; The intelligent detection system includes an implanted humidity sensor array and a data feedback module.

[0006] Preferably, the mixing ratio of the 42.5-grade portland cement, Class II fly ash, composite waterproofing agent, and basalt fibers is: 280 kg / m³: 80 kg / m³: 25 kg / m³: 0.8 kg / m³.

[0007] Preferably, the high-range water reducer is a polycarboxylate-based high-range water reducer, and the dosage of the polycarboxylate-based high-range water reducer is 0.8% - 1.5% of the cement mass.

[0008] Preferably, the dosage of the UEA expansive agent is 8% - 12% of the cement mass.

[0009] Preferably, the bottom layer is a 3-mm-thick self-adhesive SBS coil, the middle layer is a PE isolation film with air guide grooves, and the surface layer is a 4-mm-thick mineral aggregate SBS coil.

[0010] Preferably, a hot-melt rubber asphalt adhesive is pre-coated at the joints of the bottom layer, middle layer, and surface layer, and the lapping width is ≥ 80 mm, and a continuous sealing band is formed by infrared heating and rolling.

[0011] Preferably, the implanted humidity sensor array is arranged at intervals of 500 mm × 500 mm on the concrete-SBS interface layer, and the monitoring accuracy is ±3%RH.

[0012] Preferably, the data feedback module displays the leakage risk area in real time (an alarm is triggered when the humidity > 85%RH).

[0013] Preferably, the waterproof construction steps of the waterproof concrete and SBS coil are as follows: Step 1: Mix the 42.5-grade portland cement, Class II fly ash, composite waterproofing agent, basalt fibers, high-range water reducer, and UEA expansive agent evenly according to the ratio; Step 2: Before pouring the concrete, fully moisten the formwork to ensure that there are no sundries on the surface of the formwork; Step 3: Embed positioning pins inside the formwork, with the pin rod diameter of 3 mm and the spacing of 300 mm × 300 mm arranged in a plum blossom shape; Step 4: Adopt the method of layered pouring, with the pouring thickness of each layer not exceeding 500 mm. Control the pouring speed to avoid cold joints in the concrete. Use an inserted vibrator for vibration, with the vibration points evenly arranged. The vibration time shall be based on the condition that no more bubbles appear on the concrete surface and the concrete starts to bleed. Step 5: When pouring the self - waterproof concrete to a height 50 mm below the design elevation, lay the SBS coil with positioning pins. Use a vibrating rod to make the concrete rise and wrap the positioning pins to form mechanical anchoring. Step 6: Continue to pour the remaining concrete and insert the humidity sensor array. Step 7: Use the pulsed conductivity method to detect the interfacial bond strength, with the requirement that the resistance value < 50 Ω·m.

[0014] The technical effects and advantages of the present invention: 42.5 - grade portland cement provides the basic strength. Class II fly ash and high - efficiency water - reducing agent optimize the late - stage strength and pore structure, and basalt fiber enhances toughness. UEA expansive agent compensates for shrinkage, waterproof agent plugs pores, and fiber inhibits crack propagation. High - efficiency water - reducing agent improves fluidity, fly ash adjusts the setting time, and fiber enhances stability, improving the self - waterproof performance of the concrete. The self - waterproof layer of the concrete and the SBS coil form a "rigid - flexible combination" system, significantly improving the impermeability performance compared with single materials. Develop a synchronous construction process for concrete - SBS. Through pre - embedding positioning pins, the precise laying of the coil is realized, improving the construction efficiency. The humidity monitoring system can early - warning the leakage risk and reduce the maintenance cost. Specific embodiments

[0015] The present invention will be further described in detail below in conjunction with specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0016] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. Embodiment

[0017] In this embodiment, a waterproof construction technology based on self - waterproof concrete and SBS coils is provided, including waterproof concrete, SBS coils and an intelligent detection system; The waterproof concrete includes: 280 kg / m³ of 42.5 - grade Portland cement, 80 kg / m³ of Class II fly ash, 25 kg / m³ of composite waterproof agent, 0.8 kg / m³ of basalt fiber, a high - efficiency water - reducing agent, and UEA expansion agent; the high - efficiency water - reducing agent is a polycarboxylate - based high - efficiency water - reducing agent, and the dosage of the polycarboxylate - based high - efficiency water - reducing agent is 0.8% - 1.5% of the cement quality; the dosage of the UEA expansion agent is 8% - 12% of the cement quality; The SBS coil adopts a three - layer composite structure, including a bottom layer, a middle layer and a surface layer; the bottom layer is a 3 - mm - thick self - adhesive SBS coil, the middle layer is a PE isolation film with air - guiding grooves, and the surface layer is a 4 - mm - thick mineral aggregate SBS coil; the joints of the bottom layer, middle layer and surface layer are pre - coated with hot - melt rubber asphalt adhesive, and the lap width is ≥80 mm, and a continuous sealing band is formed through infrared heating and rolling; The intelligent detection system includes an implanted humidity sensor array and a data feedback module; the implanted humidity sensor array is arranged at intervals of 500 mm×500 mm on the concrete - SBS interface layer, and the monitoring accuracy is ±3%RH; the data feedback module displays the leakage risk area in real time (an alarm is triggered when the humidity > 85%RH).

[0018] The polycarboxylate - based water - reducing agent can significantly reduce the water - cement ratio of concrete through its unique molecular structure. On the premise of ensuring the workability of concrete, the water consumption is greatly reduced, making the internal structure of concrete more dense and effectively improving the impermeability; The UEA expansion agent reacts chemically with the mineral components in the cement during the hardening process of concrete, generating an appropriate amount of expansion stress, effectively compensating for the shrinkage deformation during the hardening process of concrete, inhibiting the generation of cracks from the root, and enhancing the self - waterproof performance of concrete; Among them, the waterproof construction steps of the waterproof concrete and SBS coils are as follows: Step 1: Mix 42.5 - grade Portland cement, Class II fly ash, composite waterproof agent, basalt fiber, high - efficiency water - reducing agent, and UEA expansion agent evenly according to the ratio; Step 2: Before pouring concrete, conduct a comprehensive and detailed inspection and treatment of the formwork. By fully wetting the surface of the formwork, ensure that the formwork will not absorb the water in the concrete during the concrete pouring process, affecting the hydration reaction of the concrete. At the same time, carefully clean the sundries, oil stains, etc. on the surface of the formwork to ensure that the surface of the formwork is smooth and flat, providing good interface conditions for the pouring of concrete; Step 3: Embed positioning pins inside the formwork, with a pin rod diameter of 3 mm and a spacing of 300 mm×300 mm arranged in a plum - blossom shape; Step 4: Adopt the method of layered pouring, with the pouring thickness of each layer not exceeding 500 mm. Control the pouring speed to ensure that the concrete can evenly and continuously fill the formwork space during pouring, avoid cold joints, and ensure the integrity and waterproof performance of the concrete structure. Use an inserted vibrator for vibration, with the vibration points evenly arranged to ensure that all parts inside the concrete are fully vibrated. The vibration time is based on the condition that no obvious bubbles appear on the concrete surface, the concrete surfaces are basically level, and the slurry overflows. Through precise vibration control, the air inside the concrete is discharged to improve the density of the concrete; Step 5: When pouring the self - waterproof concrete to 50 mm below the design elevation, lay the SBS coil with positioning pins, and use a vibrating rod to make the concrete rise to wrap the positioning pins to form mechanical anchorage; Step 6: Continue to pour the remaining concrete and insert the humidity sensor array; Step 7: Use the pulsed conductivity method to detect the interfacial bonding degree, and the required resistance value is < 50 Ω·m.

[0019] All the electrical components appearing in this article are electrically connected to the external main controller and the 220V mains. And the main controller can be a conventional known device such as a computer for control. In the specific implementation mode of the present disclosure, the detailed descriptions of known functions and known components are omitted. To ensure the compatibility of the device, the operation means adopted are consistent with the parameters of market instruments.

[0020] It should be noted that in this article, 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 "include", "comprise" or any other variant thereof are intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0022] The above describes the present invention and its implementation manners, and this description is not restrictive. The actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, creatively design a structural manner and embodiments similar to this technical solution, they should all fall within the protection scope of the present invention.

Claims

1. Waterproof construction technology based on concrete self-waterproofing and SBS membrane, characterized by: Including waterproof concrete, SBS membrane and intelligent detection system; The waterproof concrete includes: 42.5 grade silicate cement, grade II fly ash, composite waterproofing agent, basalt fiber, high-efficiency water reducing agent, and UEA expansion agent; The SBS coiled material adopts a three-layer composite structure, including a bottom layer, a middle layer and a surface layer; The intelligent detection system includes an implantable humidity sensor array and a data feedback module.

2. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The mix ratio of the 42.5 grade silicate cement, grade II fly ash, composite waterproofing agent and basalt fiber is: 280kg / m³: 80kg / m³: 25kg / m³: 0.8kg / m³.

3. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The high-efficiency water reducing agent is a polycarboxylic acid-based high-efficiency water reducing agent, and the dosage of the polycarboxylic acid-based high-efficiency water reducing agent is 0.8%-1.5% of the cement mass.

4. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The dosage of the UEA expansion agent is 8%-12% of the cement mass.

5. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The bottom layer is a 3mm thick self-adhesive SBS coiled material, the middle layer is a PE isolation film with air guide grooves, and the surface layer is a 4mm thick mineral granular SBS coiled material.

6. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: Hot-melt rubber asphalt adhesive is pre-coated at the joints of the bottom layer, middle layer and surface layer, with an overlap width of ≥80mm, and a continuous sealing belt is formed by infrared heating and rolling.

7. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The implantable humidity sensor array is arranged at a distance of 500 mm×500 mm in the concrete-SBS interface layer, with a monitoring accuracy of ±3%RH.

8. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The data feedback module displays the leakage risk area in real time.

9. The waterproof construction technology based on concrete self-waterproofing and SBS membrane according to claim 1 is characterized in that: The waterproof construction steps of the waterproof concrete and SBS membrane are as follows: Step 1: Mix 42.5 grade silicate cement, grade II fly ash, composite waterproofing agent, basalt fiber, high-efficiency water reducing agent and UEA expansion agent evenly according to the proportion; Step 2: Before pouring concrete, fully moisten the formwork to ensure that there is no debris on the surface of the formwork; Step 3: Pre-embed positioning pins inside the template, with a pin diameter of 3mm and a spacing of 300mm×300mm in a plum blossom shape; Step 4: Use the layered pouring method, with each layer pouring thickness not exceeding 500mm, and control the pouring speed to avoid cold joints in the concrete; use an inserted vibrator for vibration, with the vibration points evenly arranged, and the vibration time is based on the fact that no bubbles or slurry appear on the concrete surface; Step 5: When pouring waterproof concrete to the designed elevation of -50mm, lay the SBS membrane with positioning pins, and use a vibrating rod to make the concrete rise and wrap the positioning pins to form a mechanical anchor; Step 6: Continue pouring the remaining concrete and inserting the moisture sensor array; Step 7: Use pulse conductivity method to detect interface bonding, requiring resistance value <50Ω·m.