155 Speedcast Hardeners are a type of concrete admixture used to accelerate the setting and hardening of concrete. It typically contains calcium chloride, which is a common accelerator used in concrete production. These hardeners typically contain calcium chloride or other accelerating agents that speed up the hydration process of cement, resulting in faster strength development and shorter setting times. The offered hardener can help expedite construction schedules by shortening the time required for concrete placement, curing, and achieving sufficient strength for further operations. The primary function of 155 Speedcast Hardeners is to accelerate the setting time of concrete, allowing for faster finishing, formwork removal, and subsequent construction activities.