High Early Strength Concrete:

High early strength concrete sets and hardens quickly as compared to ordinary concrete. It is used for construction work especially in cold weather which enables the formwork to be reused quickly. Sometimes it is desired to obtain a concrete which can be put to use as early as possible. The concrete, under such situations, must be capable of gaining sufficient strength at an early age. This can be achieved either with normal Portland cement or with special cements, e.g. High early strength Portland cement. There is difference among properties of raw materials among the two cements. The previous strength cement is more finely ground. The strength of concrete is governed through time of mixing, water-cement ratio, compaction, temperature and etc.