Early Strength Concrete

Early-strength-ConcreteEarly strength Concrete: High Strength Concrete

  • Based on the compressive strength; concrete is normally classified¬† as normal strength concrete, high strength concrete and ultra strength concrete. Indian standard recommended methods of mix design denotes the boundary at 35 Mpa between normal strength and high strength concrete.
  • The advent of pre-stressed concrete techniques has given impetus for making concrete of higher strength. High strength concrete is necessary for the construction of high rise building and long span bridges.
  • To achieve high strength, it necessary to use high cement content with the lowest possible W/C ratio which invariable affect the workability of the mix. It should be remembered that high cement content may liberate large heat of hydration causing rise in temperature which may affect setting and may result in excessive shrinkage