What is concrete siliceous density agent? what’s the effect?

Concrete siliceous density agent implementation standard: GB8076-2003. Function: The concrete siliceous density agent makes the concrete slightly expand and dense, and has 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.…