CGM NOTE polymer cement slurry Beijing Sino-German New Asia 13311126842 CGM polymer cement slurry injection Beijing Sino-German New Asia 13311126842 CGM polymer cement slurry injection Beijing Sino-German New Asia 13311126842 CGM polymer cement slurry injection I. Materials Introduction CGM polymer cement slurry injection is a kind of high-strength cement, polycarboxylate type superplasticizer, multi-modified mineral materials as the main component of cement-based grouting material with good mobility, micro-expansion, there is a certain toughness, strong bond with the concrete, corrosion durable, suitable for concrete structures crack width more than 3mm above perfusion repair cracks and outsourcing steel reinforcement. Second, the performance indicators Table 1 polymer cement slurry injection performance test item number performance test method appearance powder, no lumps visually 2 Setting time (h: min) Initial setting ≥1: 00 DL / T 5 126 -2001 final setting ≤12: 00 3 fluidity (mm) initial value ≥340 GB / T 50448-2008 30min retention value ≥300 4 compressive strength (MPa) 28d ≥40 DL / T 5 126-2001 GB50367-2013 5 flexural strength (MPa) 28d ≥10 6 splitting tensile strength (MPa) 28d ≥5 GB50367-2013 Appendix G 7 and concrete are tensile bonding strength (MPa) 28d ≥2.5, And for concrete cohesion destruction GB50367- 2013 Appendix F Three, Construction Technology 1, pretreatment: Cracks in concrete with compressed air ash, pollutants blown. 2, laying filling tube: 500mm each direction along the length of the crack about laying a filling tube. 3. Sealing: inorganic quick sealing cracks in the surface material or all closed. 4, pressure test: The grout tube closed with 0.2 ~ 0.3MPa pressure do pressurized water or compressed air test, observe Sealing is dense, and keep moist concrete surface cracks but no water inside seam. 5 Ingredients: CGM quality polymer cement slurry injection ratio: polymer cement slurry injection: water = 10 (2.5 to 2.8). Using forced mixer or retrofitted impact drill stirring, stir to use. Good mixing the slurry should be uniform color, no dough, precipitation, gray material, bleeding, etc., and meet the liquidity requirements of the grouting consistency. Note the slurry formulation, it should be used immediately in order to avoid solidification. 6, grouting: marinated slurry injection into the special pressure grouting tank, using a pressure of about 0.3MPa slurry is continuously injected into cracks. Vertical cracks from the bottom one filling spout grouting should individually, filled with grout nozzle immediately closed. Crack grouting process should be taken to exclude the air, the last filling vent tube can not be blocked, in order to avoid the effects of air emissions. 7, conservation: After grouting, grouting area should be maintained above the water conservation 7d. CGM NOTE polymer cement slurry Beijing Sino-German New Asia 13311126842 CGM polymer cement slurry injection Beijing Sino-German New Asia 13311126842 CGM polymer cement slurry injection Beijing Sino-German New Asia 13,311,126,842