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A water-soluble polyurethane chemical grouting plugging brief is to use high-pressure grouting plugging high-pressure mechanical power (high pressure perfusion machine), the water-soluble polyurethane chemical grouting material into cracks in the concrete, concrete cracks when the slurry is encountered in the water will quickly dispersion, emulsification, expansion, consolidation, consolidation of such elastomers all cracks filled with concrete, the water is completely blocked out of the concrete structure in order to achieve the purpose of sealing plugging. High pressure grouting plugging technology is internationally advanced level high pressure airless water infusion of new technology, is a new technology developed water-soluble materials used grout. Second, high pressure grouting plugging principle: soluble polyurethane chemical grouting material is made from an excess of polyvalent isocyanate and polyol preformed oligomeric amino acid containing free NCO groups of the prepolymer. Commonly used polyisocyanate has three kinds of TDI, MDI, PAPI and the like. Polyether polyols using its functional groups and molecular weights may have several. After the slurry is poured concrete cracks, and leakage of water to meet the chemical reaction and emit carbon dioxide, and the formation of urea derivatives. So as to achieve the purpose of seepage. Soluble polyurethane chemical grouting material is a bottom viscosity, one-component polyurethane synthetic polymer materials, form of slurry, it has water to produce cross-linking reaction, foaming characteristics to generate multi-mesh closed elastomer. When it is injected at high pressure into the cracks in the concrete structure will be extended until all gaps (including imperceptible to the naked eye) filled, after water (water) along with the crosslinking reaction, release large amounts of carbon dioxide gas, secondary osmotic pressure, high pressure thrust with two times osmotic pressure will push the elastomer and filled all the gaps, to stanch purpose. Visible soluble polyurethane chemical grouting material is the best kind of plugging material properties, the material can not be treated by conventional leakage, high pressure grouting plugging Plugging a successful technology. Third, a high-pressure grouting plugging mechanism of crack formation of chemical links. 2, the pore surface to form a high strength bolt. 3, filling all the cracks under high pressure to push. Fourth, the use of high-pressure grouting plugging technical characteristics of a highly refined technology; 2, simple operation; 3, Four Seasons construction; 4, non-toxic and pollution-free; 5, a reasonable fee. Fifth, the use of high-pressure grouting plugging techniques ranging from 1, various buildings and underground concrete cracks, expansion joints, construction joints, structural joints plugging seal. 2. Geological Drilling Project drilling Wall plugging reinforcement. 3 hydropower project reservoir dam grouting, plugging cracks in the tunnel, seepage, dam seepage reinforced concrete cracks. 4, high-rise buildings and railway, highway roadbed reinforcement and stability. Reinforcement 5, coal mining or other mining projects in the trenches shutoff, such as broken roof layers. 6, crack reinforcement bridge foundation reinforcement and bridge. 7, deformed reinforcement of buildings, concrete structures such as water towers, pools reinforcement and prevent subsidence cracks. 8, soil improvement, protection and stability of the soil surface reinforcement. Six high-pressure grouting plugging construction method, check: Carefully inspect leaking parts, cleaning the dirt near the leak site to prepare filling. 2, cloth hole: the leaking part to play grout holes can be drilled for deep cracks inclined hole through the seam surface, usually pitch of 20cm-50cm. 3, buried mouth Sealing: buried grouting mouth, closed with a polymer cement. 4. Filling: Identify the specific circumstances grouting pressure leakage sites, filling volume. Injection pump by plugging the product poured into the cracks, holes appear when the whole neighborhood pure slurry, the move to adjacent holes at a predetermined pressure grouting, do not enter until the pressure until (injection rate ≤0.01L / min), then Close the valve. (General grouting pressure 0.3Mpa). 5,72 hours after checking whether the leak site seepage, no seepage will break mouth filling with polymer cement the base closed, smooth. Seven, high pressure grouting plugging agent basic technical parameters density (23 ℃): 1.1g / cm3 Viscosity (23 ℃): 250-350mpas react with water Multiples: 10-20 Temperature: + 5-55 ℃ Working Pressure (ie o machine pressure range): 0-70MPa reaction time :( 5% mixed with water) to start the reaction: 10-15 seconds development period: 50-60 seconds formation: 2-3 minutes, eight, nine high-pressure perfusion machine, perfusion pressure construction process structure inclined crack crack leaking 1. drilling to depths of half the thickness of the structure is the lowest in the cracks left or right at 5 cm - 10 cm, sequential drilling uphill from the lower, pitch for 20 cm - 30 cm is appropriate, to the highest point of the drill is once again buried grout sealing needles, crack the case because of the general structure of irregular shape, so pay special attention to the time required to cross the fracture surface drilling, grouting will have effect. 2. After the grout sealing needle set, water-soluble polyurethane chemical grouting material is poured until filling liquid found on the surface of the structure exudation. 3. After the infusion is complete, you can remove the grout sealing needle. 1. leaking construction joints in construction joints lowest left or right slant drilling at 5 cm ~ 10 cm to half the thickness of the deep structure, sequential drilling uphill from the lower, the pitch is 20 cm - 30 cm is appropriate, drilled to the highest point and then sealing the needle once buried. 2. After the grout sealing needle set, in order to inject high pressure perfusion machine soluble polyurethane chemical grouting materials, to find filling oozing liquid on the surface of the structure. 3. After the infusion is complete, you can remove Grouting needle. Leaking a hive. In the scope of the hive, every drill a hole 25 cm - 30 cm, a depth of half the thickness of the structure is appropriate, and then buried the needle filling and sealing to tighten fixed. 2. After the grout sealing needle set, in order to inject high pressure perfusion machine soluble polyurethane chemical grouting material to find filling oozing liquid on the surface of the structure, you can solve the leakage problem. 3. After the infusion is complete, you can remove the grout sealing needle. Heze City company specializing in waterproof plugging