2014 Volume 70 Issue 1 Pages 92-103
The influences of concrete temperature with ground granulated blast-furnace slag on the autogenous shrinkage and on shrinkage stress are experimentally investigated. By measuring the autogenous shrinkage and shrinkage stress caused by restraint of reinforcement bar under different curing temperatures of concrete with ground granulated blast-furnace slag and of concrete ordinary portland cement, it is clearly shown as follow.
Although the variation of autogenous shrinkage of ordinary portland cement concrete due to temperature changes is less, that of blast furnace cement concrete depends notably on the concrete temperature. Moreover, as a result of calculating reduction constant for modulus of elasticity based on the shrinkage stress, reduction constant of blast furnace cement concrete is larger than that of ordinary portland cement concrete under the condition of high concrete temperature.
