
Admixtures
Admixtures are ingredients other than aggregates, water, fibers, and hydraulic cement that are added to the concrete batch immediately before or during mixing. A proper use of admixtures offers some particular beneficial effects to concrete, improved quality, acceleration or retardation of setting time, increases frost and sulfate resistance, control of strength development, and improved workability.
Calcium chloride (CaCl_2) Calcium chloride is generally used in cold weather to accelerate the setting time and produces...