Waterproofing and leakage stoppage in the basement of the local construction team - on-site investigation of water leakage Waterproofing and leakage stoppage in the basement of the local construction team - on-site investigation of water leakage Yancheng Zhiruixiang Waterproof and Leakage stoppage Engineering Co., Ltd. was among the first batch of enterprises to obtain the first level of safety qualification for hanging at heights from Jiangsu Administration of Work Safety, and the second level of professional qualification related to China's anti-corrosion construction power system.
1、 Brief Introduction of Water Soluble Polymer Chemical Grouting Plugging
High pressure grouting plugging is to use the mechanical high pressure power (high pressure grouting machine) to inject water soluble polymer chemical grouting materials into the concrete cracks. When the grout encounters the water in the concrete cracks, it will quickly disperse, emulsify, expand, and consolidate. This consolidated elastomer fills all the cracks in the concrete, and completely blocks the water flow outside the concrete structure, To achieve the purpose of water stop and leakage stoppage. High pressure grouting plugging technology is a new waterproof technology of high-pressure airless grouting with international advanced level, which is a new technology used in water-soluble grouting materials in developed countries.
2、 High pressure grouting plugging principle:
Water soluble polymer chemical grouting material is a kind of polymer cutting flexible elastic material, which is composed of several molecular materials of polymer chemical agricultural production system, and is proportioned according to strict proportioning standards.
Commonly used multi polymer materials include propylene, crystal and gel. Polyhydroxy compounds are polyethers, which can have several functional groups and molecular weights. After the grout is poured into the concrete crack, it will meet with the leakage water to produce chemical reaction, release carbon dioxide, and form macromolecular organisms. So as to achieve the purpose of seepage prevention and plugging.
Water soluble polymer chemical grouting material is a kind of bottom viscosity, one component synthetic polymer flexible elastic material in the form of flexible elastomer. It has the characteristics of cross-linking reaction when encountering water, and foaming to form a multi-element network closed elastomer. When it is injected into the concrete crack structure under high pressure to extend until all the cracks (including those that are hard to detect by the naked eye) are filled, when it meets with water (water injection), it is accompanied by cross-linking reaction, releasing a large amount of carbon dioxide gas, generating secondary seepage pressure. High pressure thrust and secondary seepage pressure will press the elastomer into and fill all the cracks,
To achieve the purpose of leak stop It can be seen that the water soluble polymer chemical grouting material is one of the plugging materials with good performance. The leakage cannot be treated with ordinary materials. After the high-pressure grouting plugging technology is used, the leakage is successfully plugged at one time. Waterproof and leak stoppage company's leak stoppage measures for basement
Basement leakage mainly exists in Construction joint , expansion joint , post cast strip, external wall and other parts, construction joints, expansion joints, post cast strip, external wall concrete joints are poorly treated, resulting in leakage.
The construction joint shall be treated according to the conventional method before concrete pouring, and the surface shall be roughened,
Waterstop steel plate Clean, water and wet, and use the same strength grade to reduce gravel mortar Connect mortar to ensure good contact of construction joints. To ensure that there is no leakage at the construction joint, an additional waterproof layer must be added when waterproofing the large surface of the basement. When placing the rubber waterstop, ensure that the waterstop is located in the middle of the thickness of the component, and the centerline of the waterstop coincides with the centerline of the expansion joint. Especially for horizontal expansion joints, attention must be paid when pouring concrete. The concrete cannot directly impact the rubber waterstop to avoid leakage caused by the deviation of the waterstop. For the construction of post cast strip, it is mainly to focus on cleaning. For the convenience of cleaning, the cushion at the post cast strip position is intentionally left 100mm lower. In order to prevent grout leakage, a full-length concrete belt is poured on both sides of the post pouring belt, which has played a good control effect on grout leakage.
There are split bolts at the places where leakage is prone to occur on the exterior wall of the basement, through the reinforcement support (or the hook is too long), the internal corner between the bottom plate and the exterior wall, the honeycomb of concrete over vibration and under vibration, etc. In view of the above reasons, it is strictly prohibited to use ordinary screws or through limit support reinforcement for the external wall during the concealed acceptance of reinforcement for the bottom plate and the external wall. All screws and pipes on the exterior wall of the basement must be equipped with three waterstop rings. The formwork of the exterior wall of the basement cannot be removed too early, so as to avoid the loosening of the water stop screw and the formation of pores during the removal of the formwork. In order to avoid leakage at the corner of the bottom plate and the external wall, the quality of the 300mm high concrete guide wall construction shall be strictly controlled. The bottom plate concrete shall be poured to the lower opening of the hanging formwork first, and then the guide wall concrete shall be poured when the concrete is about to initially set.
When pouring the guide wall concrete, it must be vibrated and compacted. The concrete turned out from the lower opening of the hanging formwork cannot be scraped off in a hurry. Special attention should be paid to the fact that the concrete at the root of the guide wall cannot be vibrated again at this time, so as to avoid the occurrence of hanging feet, which may lead to leakage. In order to control the occurrence of honeycombs and cracks on the external wall, vibration and curing shall be ensured during concrete construction. Strengthen the concrete vibration, implement "quick insertion and slow pulling", and it is strictly prohibited to cause honeycomb due to missing vibration or excessive vibration. Strengthen the curing of impermeable concrete, assign special personnel to complete it, ensure that the concrete surface is kept wet, and the curing time is not less than 14 days. Later, when carrying out the waterproof construction of external walls, first conduct the water storage test of structural external walls to ensure that there is no leakage. Add a layer of waterproof coating to wet areas. For bolt holes, chisel out small wood blocks and repair them with 1:2 cement mortar. Before waterproofing the external corners and construction joints on large surfaces, an additional layer of waterproof must be made.
Construction Anticorrosion Co., Ltd. is specialized in undertaking: various waterproof plugging projects, sewage pool expansion joint plugging, sewage pool plugging, underground garage plugging, sewage pipe plugging, basement plugging, cable trench plugging, hydropower station basement plugging, pressurized plugging, basement plugging, pool plugging, mine plugging, tunnel plugging, cable trench plugging, expansion joint plugging, Leakage stoppage works for elevator shaft, coal conveying gallery, highway tunnel, subway tunnel, underground tunnel and pump room. The registered capital of the company is 2.88 million yuan, and the working capital is more than 10 million yuan; It has a high-level technical construction team, including 16 with senior professional titles,
86 people with intermediate professional titles. The company has anti-corrosion qualification, safety qualification and building qualification. The company has many branches and offices. The company has strong technical force and pays attention to the training of waterproof technicians. At present, it has high-level leak stoppage engineering technology related personnel, construction management personnel, advanced construction technology and professional construction team. For more than 40 years, the company has specialized in building waterproof and leak stoppage construction technology. With the progress of science and technology, in recent years, the company has introduced a new technology of waterproof and leak stopping with pressure, impermeability and vibration resistance, adopted high-tech nano molecular waterproof materials, accurately prepared a new technology of scientific pressure reducing grouting, and professionally treated all kinds of underground engineering leakage, especially the leakage of cracks in large volume concrete of basements and pools, and the leakage of settlement expansion joints. The company has many years of experience in maintenance and treatment, The company is fully capable of difficult waterproof and plugging. The company adheres to the enterprise style of "unity and hard work, forge ahead, rigorous and realistic, and hard work", and constantly blazes new trails. It relies on strong strength, scientific management and quality service, and adheres to the enterprise tenet of "honesty and realism, serving the society, and users first". Act according to the modern enterprise management mode. According to the requirements of the provincial construction department, the municipal construction committee, Party A's unit and the environmental protection department, civilized construction, quality follow-up and lifelong responsibility. We are willing to work with our domestic colleagues to make our due contribution to the innovation and application of China's waterproof plugging technology. We sincerely welcome all enterprises and individuals to call us for consultation and negotiation.
