Details
CHEM HARD chemically reacts with soft free lime and calcium carbonate compounds in concrete forming dense, insoluble, chemically resistant flint-like surfaces. CHEM HARD is a VOC-compliant, colorless solution of a carefully controlled concentration of 100% active sodium silicate chemicals with a non-acid penetrant. CHEM HARD may be applied to fresh or hardened concrete as a chemical hardener and dustproofer.