粉煤灰混凝土施工期嵌固板的温度应力分析

在大体积混凝土浇筑中,如混凝土重力坝基础部位,为了降低混凝土板温度应力和控制裂缝产生,在实际施工中,掺入一定量的粉煤灰.这里运用编程计算出不掺粉煤灰A0与掺45%粉煤灰A45混凝土施工期嵌固板的温度应力,通过分析,结果证明煤灰不但能节约水泥,而且能够达到降低温度应力和控制裂缝产生的目的,从而对实际工程有一定指导意义.

Analysis of the different temperature stress in the embeded slab caused by concrete hydration considering the addition of fly ash

The addition of fly ash to the concrete not only brings about saving of cement but also leads to reducing of the temperature stress by concrete hydration and the crack initiation.Based on the calculation of the temperature stress of the placed concrete during the construction of a concrete ,a comparative analysis of the temperature stress in embeded slab is presented in consideration of two cases such as without the addition of fly ash and with the addition of 45 percent fly ash.the result can be used in practical engineering.