QUIKRETE FAST-SETTING CONCRETE MIX

摘要

No, it's not a grunge band-it's a powdery binding agent that mixes with gravel, sand, and water to form the hardened slab we call concrete. It's made by heating limestone, iron, alumina, and silica to 2,700° F, which changes the ingredients into calcium silicates, alumi-nate, and aluminoferrite.