应用成熟度理论预测C50大体积混凝土的力学性能  

作　　者：庞二波[1] 孙克平 张恒春[1] 赵日煦[1] 郭明明[1] 杨龙[1] 

机构地区：[1]中建商品混凝土有限公司 [2]中建三局技术中心

出　　处：《广东建材》2012年第9期31-34,共4页Guangdong Building Materials

摘　　要：大体积混凝土硬化过程产生的温升与时间对其力学性能影响较大,成熟度在预测混凝土的阶段强度中是一种有效方法。本文在应用成熟度等效龄期方法的基础上,研究了水胶比0.35的大体积混凝土在不同养护温度下的混凝土轴压强度、弹模和劈拉强度发展规律。将标养、35℃和50℃湿热养护的温度和时间换算为成熟度一致时的相互关系,建立了成熟度下的预测公式;并得出65℃湿热养护的力学性能需单独建立预测关系式的结论。Temperature rise in the hardening mass concrete and time have a big effect on the mechanical properties. It is a very effective way to assess the stage strength of concrete by maturity. Maturity equivalent age was applied in this paper. Develop- ment law of concrete axial compressive strength, elastic modulus and splitting tensile strength in mass concrete, w/s 0.35, under different curing temperature, was studied. Prediction formula in the concrete curried in standard cuing ,35℃ and 50℃ hy- drothermal curing respectively was built by translating temperature and time to corre- lation at the same maturity. Prediction formula of mechanical properties should be concluded alone in the concrete curried in 65℃ hydrothermal curing.

关 键 词：成熟度 大体积混凝土 力学性能预测 

分 类 号：TU528[建筑科学—建筑技术科学]