Prevent grouting material method of crack - Why use CGM grout material

grouting material CGM grout grouting material & # 8195; 1. Use 425 # slag Portland low-heat cement, control grouting material casting speed too fast, the pouring temperature is too high, the grouting material mixing temperature control under 35 ℃ grouting material form removal time. About the amount of the largest aggregate, choose water continuous way, avoid aggregate temperature rise. Construction water tap water and deep well pump was used for the extraction of groundwater. 2 cement-based grout material inspection aggregate quality strictly, avoid alkali - — Silicate aggregate reaction, choose inactive aggregate, replacement was used in the rubble, strengthen quality inspection of cement and the compactness of grouting material progress. 3 in the irrigation area is enclosed with tarpaulin, grouting material under the condition of the subgrade strength does not affect the early water wet bottom, cast grouting material has been completed, the grouting material surface, sprayed with just the right amount of water maintenance, artificially created for regional microclimate avoid temperature and air dry. 4 the day pouring grouting material, upon the exterior trim, the plastic film on its surface. If by reason of the material can't cover up in time, according to the condition of sprinkle a few water, avoid boring caused by sunlight and wind, drop in temperature, and pay attention to in front of the grouting material hardening appearance, not because the operation and cause damage. About those few cannot completely avoid cracks, in the concrete pouring stops, 2 h and subsidence in adjacent cracks grouting material appearance plaster from the start. 5 to avoid bleeding, should first decline in grouting material unit water consumption as far as possible, using harsh grouting material, should use appropriate fine aggregate thickness of material content.