How the strength of concrete is influenced by the temperature
The concrete strength performance in initial phase is significantly affected by the temperature control. In cold weather, the temperatures of concrete should be managed with powerblanket? concrete curing blankets so that proper compression strengths are attained as soon as possible. Once, the concrete attains the perfect strength, the construction process is started.
The following four phases of works are required for building up RCC column :-
Column layout work
Column reinforcement work
Concrete Pouring into column
Given below, the detail segregation of strength gains after three days at different temperatures:
Temperature ? Compressive Strength (psi)
70?F ? 2,700
60?F ? 2,150
50?F ? 1,600
40?F ? 1,200
30?F ? 850
20?F ? 400
In order to keep most favorable concrete strength, the following activities should be undertaken while placing concrete in cold weather:
Utilize a heated or warm concrete mix.
Keep an eye so that the concrete can?t be freezed ? Apply powerblanket? concrete curing blankets to manage temperature.
Ensure that the concrete should be arranged on a frozen sub-grade ? Apply powerblanket? concrete curing blankets to manage temperature.
Safeguard concrete against extreme drying.
Include accelerators to retain strength and normal set time.
Stay away from quick changes in concrete temperature with powerblanket? concrete curing blankets.