文献类型：期刊文献

中文题名：再生粗骨料混凝土抗压强度-龄期数学模型

英文题名：Mathematical Model for Age-Dependent Compressive Strength of Recycled Coarse Aggregate Concrete

作者：王伟[1];周爱兆[2];冯丽[1];潘高洁[1];李娟[1]

机构：[1]绍兴文理学院土木工程系;[2]江苏科技大学土木工程与建筑学院

年份：2012

卷号：15

期号：5

起止页码：633

中文期刊名：建筑材料学报

外文期刊名：Journal of Building Materials

收录：CSTPCD、、北大核心2011、EI(收录号：20130615999424)、Scopus(收录号：2-s2.0-84873258634)、CSCD2011_2012、北大核心、CSCD

基金：国家自然科学基金资助项目(50639050);江苏教育厅自然科学基金资助项目(08KJB130001);江苏省国土资源厅自然科学基金资助项目(2009D15);教育部科学技术研究重点项目(211068);住房与城乡建设部研究开发项目(2012-k3-4)

语种：中文

中文关键词：再生粗骨料混凝土(RCAC);龄期;抗压强度;数学模型

外文关键词：recycled coarse aggregate concrete（RCAC） ; age; compressive strength; mathematical model

中文摘要：通过对再生粗骨料混凝土不同龄期的抗压试验,研究了其抗压强度-龄期发展机理;综合最终抗压强度和初始强度发展速率,采用半值强度指数建立了再生粗骨料混凝土抗压强度-龄期模型的特征方程,揭示了传统双曲线模型的缺陷,指出了理想的抗压强度-龄期模型应具备的数学性质.最后建立了新的抗压强度-龄期模型,通过试验数据拟合证明了该模型的正确性.

外文摘要：Mechanism for compressive strength increase of recycled coarse aggregate concrete（RCAC） was analyzed, and compressive strength tests of RCAC were conducted at 1, 2, 3, 5, 7, 14 and 28 d ages. A concept, named half-value-strength-index, for age-strength model of RCAC was proposed and employed. Combined with initial hardening rate and final strength, mathematical age-strength model is established in order to reveal deficiency of ideal age-strength model sh which can overcome the defi found between tested data a conventional hyperbolic age-strength model. Mathematical characteristic that ould have is pointed out. A new age-strength model of RCAC is presented ciency of conventional age-strength model. Finally, good agreements have been nd new model simulations.