To protect concrete from problems through freezing, bubbles must have the proper dimension, distribution and volume. ASTM C 260 specifies specifications for air entraining admixtures. Determined by our encounter in cement generation process and solution know-how, one or two SikaGrind® products are encouraged for plant trials. If needed, laboratory pre-trials https://www.tjcyindustrialchem.com/news/cement-additives-and-concrete-admixtures-key-differences.html