Concrete silica dense agent causes the concrete to expand slightly , dense, with the functions of moisture-proof, waterproof, anti-seepage and anti-cracking. The anti-permeability grade of concrete mixed with this product can reach P20. The frost resistance of concrete mixed with this product can reach 300 times. This product is suitable for concrete grades C20~C60. The dosage accounts for 16% of the cement weight. </p
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