Five characteristics of external influence the grouting material contraction - Secondary CGM high-strength non-shrinkage grouting material

grouting grouting material manufacturer grouting material model primary factors influencing grouting material to shorten and external two aspects; Internal cause refers to the variety and quality of grouting material composition data, grading, plus the seam an agent, and mixture ratio, etc. ; In addition, environmental temperature, humidity, wind speed and other exogenous also has a serious effect on shortened, its influence is sometimes greater than the influence of the internal cause seizures. 1, dosage of cement, and the closed side of the types of sand and gravel aggregate demand how many grouting material shrinkage value is very small, so the first from the dry shrinkage of the grouting material slurry shrinkage, shorten the value of the slurry can reach more than 2000 x 10. Punctual in water/cement ratio, cement dosage, the greater the grouting material drying shrinkage value. So when high strength grouting material manufacture, especially to control the cement dosage. 2, aggregate consumption and decrease of quality of grouting material is the first component of cement stone. Increase aggregate dosage can reduce shorten appropriately. Under the same conditions, choose relatively high elastic modulus of aggregate, can also reduce shorten. 3, water/cement ratio in the cement dosage is a punctual, water-binder ratio, the greater the mean excess water, the more the greater the transpiration attacks will shorten the value of the corresponding. So we will strictly control water-binder ratio, as far as possible by water-binder ratio. 4, plus the seam an agent grouting material and seam an agent type heavy and complicated, different function. Of common beauty water reducing agent, quick-setting seam an agent, early strength seam an agent, etc. Plus the seam an agent has become a modern grouting material (guess not lack of part of the civil engineering construction plays in improving the new mix workability, adjust new grouting material mix of grouting material hardening function, improve the strength of grouting material function and durability or other special effects. But with beautiful seam an agent in the early stage of the grouting material gm increase grouting of jurong grouting material manufacturers to shorten the actual cause meet attention is necessary. 5, environmental conditions, temperature, humidity, wind speed to shorten the serious influence will attack. The higher the temperature, the smaller the environment humidity and wind speed, the greater the grouting material boring speed is faster, at the beginning of the grouting material condense sclerosis caused extremely simple drab cracking, so it is necessary to take early watering according to different situations, moisturizing perhaps steam maintenance measures.