How to repair the leakage of basement in Zibo, Shandong, Yancheng Zhiruixiang Waterproof and Leak Stopping Engineering Co., Ltd It is one of the first batch of enterprises with the first level of safety qualification for hanging work at heights of 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 is to use the high pressure power of machinery ( High pressure filling machine ) ， Water soluble macromolecule chemical grouting material is injected 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, so as to achieve the purpose of stopping water and plugging leakage. 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, gel, etc three Species. 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, and ordinary materials can not treat leakage. After the high-pressure grouting plugging technology is used, the plugging is successful once
Types of basement leakage stoppage and prevention measures by waterproof leakage stoppage company
The designed concrete self waterproof itself leaks water: due to the complex structure and construction conditions in the actual project, such as dense reinforcement, differential foundation settlement sand The waterproof concrete itself may also have water leakage due to large mud content, weak sense of responsibility of mobile labor and other reasons. Therefore, it is better to use multiple waterproof lines for basement waterproof design in high water level areas.
Bottom plate leakage caused by formwork reinforcement: for erection Exterior wall panel For formwork, the formwork reinforcement shall be embedded on the bottom plate. After construction, the reinforcement shall be cut on the top surface of the bottom plate. Since the reinforcement has no protective layer, chemical corrosion is formed, causing serious water seepage.
Leakage caused by untreated or incomplete treatment of honeycombs, pitted surfaces, and trenches: when the vibrating concrete is not dense, honeycombs, pitted surfaces, and trenches are treated, the loose concrete is not removed, and the fine aggregate concrete with the same proportion of admixture is not used for repair and plastering mortar And the mortar is not dense, resulting in loose concrete and leakage.
Water leakage at the junction of wall root and bottom plate: the junction of wall root and ground and surrounding parts are wet and dripping, and there are water leakage points at the junction of the two. The reason for the leakage is that when vibrating the bottom plate concrete in the next step, the 20~30cm high concrete of the bottom plate and wall root that has been vibrated in the previous step is affected by the vibration, which makes the concrete vibration not compact. In addition, the wall root concrete does not sink under the support of the formwork, and the bottom plate concrete that is vibrated and sinks will crack at the wall root. At the same time, the stress in this part is too concentrated, and it is easy to cause dry cracks and leakage if the maintenance is not timely. Therefore, when vibrating the lower bottom plate concrete, do not insert the vibrator into the upper concrete and the junction of the two concrete steps, but leave a certain distance, which should be greater than the amplitude distance of the vibrator, to prevent the bottom plate and wall root concrete that has been vibrated from being vibrated again; When pouring the high wall root concrete, the concrete shall be poured after the initial setting of the bottom slab concrete, and the vibrator shall not be inserted into the initial setting of the bottom slab concrete.
Leakage caused by insufficient thickness of reinforcement protective layer: external ground be launched Through the thin rebar protective layer on the outer side of the bottom plate, it enters the surrounding of the bottom plate rebar, and the rebar corrosion makes the concrete have gaps, which seeps into the basement along the direction of the rebar. Therefore, it is suggested that when designing the basement, the protective layer of the reinforcement outside the bottom plate and the outer wall should be set and properly thickened in strict accordance with the specifications. The negative difference should be taken during the construction lofting, processing and binding of the reinforcement, so as to avoid almost no protective layer of the reinforcement due to the expansion of the formwork.
Through wall formwork Bolt Improper treatment method causes water leakage: the water stop plate of the through wall bolt of the external wall is not welded tightly, or the through wall bolt leaves a long head when cutting the external wall, and the steel bar head is not covered tightly when plastering the external mortar, especially when the steel bar head is exposed outside the plastering layer, the waterproof layer is broken when waterproof, chemical corrosion is formed under the action of underground water, and continuous corrosion towards the internal wall causes water leakage.
Water leakage caused by the deviation of the waterstop of the settlement joint: the water leakage of the settlement joint is relatively common. Because the rubber waterstop tape in the joint is not easy to fix firmly, it often runs away when pouring concrete, and some runs seriously, especially the waterstop of the top plate and bottom plate often falls on the lower reinforcement. The concrete below the horizontal waterstop is not easy to be compacted, and often forms holes, honeycombs, pockmarks, etc. Therefore, during the construction, the reinforcement skeleton shall be welded to fix the waterstop at an accurate position, and the waterstop shall be fixed after the concrete below the horizontal waterstop is poured and compacted.
Leakage caused by sundries in the concrete: sundries in the concrete such as wooden wedges, boards, battens, polystyrene boards, bricks, woven bags, etc. are easy to cause leakage. The sundries within 10cm of the inner wall must be removed, or they can be burned by high-pressure blowtorch, cleaned up and then plugged.
Water leakage in the reinforcement concentrated area of the outer wall: water leakage occurs at the junction of the outer wall column and the reinforcement concentrated area in the turning roof. The reason is that these parts are small in space, difficult to pour and tamp, and the concrete is not easy to compact, resulting in leakage. Therefore, iron wedges or wooden wedges shall be used to temporarily separate the reinforcement, and then the concrete shall be poured. It is better to use pea gravel concrete for pouring, and special personnel shall be assigned to manage it. The external wall waterproof layer is unreasonable and causes leakage: before the external wall is used as the coating waterproof layer, the cement mortar leveling layer must be plastered first, and the leveling and polishing must be carried out. Because there are many water holes on the concrete surface after formwork removal, if the waterproof coating layer is directly made, many holes will also be formed on the coating surface, which is the source of water leakage in the basement. In addition, if the leveling layer is plastered but not flattened and calendered, the thickness of the coating film will be uneven and there will be holes on the surface after the waterproof layer is made. When backfilling sand and gravel, because the foundation is very deep, the tumbling barrel must be used, and the vehicle cannot be used directly to overturn the pit, so as to prevent sand and gravel from damaging the protective layer and waterproof layer.
Leakage caused by untight steel pipe joints: telecommunications pipelines, lighting pipelines, etc. are buried in the concrete. Because the steel pipe joints are rough and untight, groundwater enters the concrete, and then enters the pipe from the steel pipe joints. Water leaks into the room from the junction box on the inner wall, or seeps into the room along the steel pipe.
Water leakage in the post cast strip: at the joint between the post cast concrete and the pre cast concrete, water leakage occurs due to the slurry running of the pre cast concrete is not dense.
Water leakage of construction joint: the horizontal construction joint of the external wall is generally free of water leakage and seepage after embedding the steel plate waterstop, while the vertical construction joint is still free of water leakage and seepage after installing the steel plate waterstop. The reason is that the end of the vertical construction joint is not easy to seal tightly when erecting the formwork, especially when it is sealed with 2-layer steel plate mesh, the slurry often runs out, leaving only sand and gravel and a small amount of cement slurry, forming similar foam concrete, which cannot prevent leakage and seepage. Therefore, wood formwork or bamboo woven formwork shall be used for sealing during formwork erection at this part.
Jiangsu Construction Anticorrosion Co., Ltd. is specialized in undertaking: various waterproof and 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 project, expansion joint plugging project, elevator shaft plugging project, coal gallery plugging project, highway tunnel plugging project, subway tunnel plugging project, underground tunnel plugging project, pump house plugging project and other plugging projects. 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 people with senior professional titles and 86 people with intermediate professional titles. With anti-corrosion qualification, safety qualification and building qualification, the company has many branches and offices. The company has a strong technical force and pays attention to the training of waterproof technical personnel. 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, it has been dedicated to 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 large volume concrete cracks in basements and pools, the leakage of settlement expansion joints, and had 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", constantly blazes new trails, 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 Department of Construction, the Municipal Construction Commission, 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
