EFFECT OF MINERAL ADMIXTURES ON THE HYDRATION HEAT OF MORTAR IN SUPER HIGH STRENGTH CONCRETE

摘要：

The facts of high cement content, high hydration heat and high rate of heat evolution haveseriously impeded the application of super high strength concrete. Mineral admixture is one ofthe best materials which can reduce the hydration head and the hydration exothermic rate ofhigh performance concrete. The influences of silica fume, fly ash and ground granulated blast-furnace slag on the hydration heat and the hydration exothermic process of mortar in superhigh strength concrete at water to binder ratio of 0.24 were studied by the means of hydrationheat experiments. The results show that the hydration exothermic process is accelerated, butthe hydration exothermic peak is reduced with the addition of silica fume. On the other hand,with the addition of fly ash or ground granulated blast-furnace slag, the hydration exothermicprocess is delayed, the arrival time of the highest hydration exothermic rate is postponed, andthe hydration heat and hydration exothermic rate are markedly reduce.

作者: Liu Jianzhong Sun Wei Miao Changwen Liu Jiaping

作者单位: Jiangsu Key Laboratory of Civil Engineering Materials,Southeast University,Nanjing,China;Jiangsu Res Jiangsu Key Laboratory of Civil Engineering Materials,Southeast University,Nanjing,China Jiangsu Research Institute of Building Science,Nanjing,China

会议类型: 国际会议

会议名称: 1st International Conference on Microstructure Related Durability of Cementitious Composites(首届与水泥基复合材料耐久性相关的微观结构国际会议)

会议地点: 南京

会议语种:英文

页码: 199-206

在线出版日期: 2008-10-13（万方平台首次上网日期，不代表论文的发表时间）