等效龄期法在大体积混凝土性能预测中的准确性  

Accuracy of equivalent age method for predicting mass concrete properties

作　　者：张增起 石梦晓 王强[1] 崔强[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2016年第8期806-810,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(51278277)

摘　　要：为了探讨等效龄期法在预测大体积混凝土力学性能中的应用,该文共设计了5组混凝土配合比和2种养护方式。通过绝热温升实验确定了每组配合比的匹配养护温度,对比了温度匹配养护混凝土的力学性能和等效龄期法换算的标准养护的混凝土力学性能,结果表明:通过等效龄期法推算的混凝土力学性能高于温度匹配养护混凝土的力学性能,等效龄期法在大体积混凝土性能预测中有局限性。The accuracy of the equivalent age method on property prediction of mass concrete was evaluated for five mixture proportions and two kinds of curing conditions. The concrete specimens were cured using standard curing or matching curing based on adiabatic temperature rise test results. The results show that the calculated concrete properties predicted by the equivalent age method were much higher than the measured data for concrete prepared using matching curing. Thus, the equivalent age method cannot accurately predict the properties of mass concrete.

关 键 词：混凝土 绝热温升 等效龄期法 抗压强度 弹性模量 

分 类 号：TU528[建筑科学—建筑技术科学]