The usage of cement varies based on the location of the structure and design criteria.
Mostly OPC cement has been used to construct a general structure, but it is not suitable for underground construction because OPC cement does not have sulphate resistant capacity.
So we have different types of cement for every usage condition.
RHC is a special cement where high early strength is required. Another name for Rapid hardening cement is “High early strength cement”. It attains compressive strength in a short period.
Another rapid hardening cement exists in construction named “Extra Rapid Hardening Cement”.
Extra Rapid Hardening Cement has been manufactured by adding 3% of calcium chloride with Rapid Hardening Portland Cement.
It gives 25% higher strength than RHP Cement in 2 days and 10 to 20% higher at 7 Days. Extra rapid hardening cement is preferable to use when very high strength is required in a short period.
Generally, these types of cement are used in waterlogged areas, bridges, dams, etc., Because those structures required high strength required in a short period to continue the flow of construction activity.
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