Simulation of the effects of cement particle size on adiabatic temperature rise of concrete

To simulate the effects of cement's particle size distribution on the adiabatic temperature rise of concrete,a hydration model based on hydration depth was built.In this model,the hydration process of cement in concrete was assumed to be controlled by the hydration depth,which was independent of cement particle size;Based on the experimental results of isothermal hydration heat of cement,the maximum hydration depth was deduced;The effects of temperature on the hydration process was assumed to be simulated by the Arrhenius law.The reference hydration rate curve was derived from the adiabatic temperature rises of concrete at three different casting temperatures,which were examined by the adiabatic temperature rise equipment.At last,the model was applied to simulate the adiabatic temperature rise of concrete in the experiments.The results show that the hydration model based on the hydration depth can simulate the effects of cement's particle size distribution and casting temperature on the adiabatic temperature rise of concrete with satisfactory accuracy.