再生混凝土物理力学性能试验研究*
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郝彤,石磊,陈晶晶(郑州大学土木工程学院,郑州 450002)[摘要]采用废砖粗骨料、废混凝土细骨料完全替代天然骨料,配制了5组不同配合比的再生混凝土试块。通过试验得到立方体试块的抗压强度、碳化深度以及棱柱体试块的轴心抗压强度、弹性模量、收缩等力学性能指标。经分析得出轴心抗压强度与立方体抗压强度、弹性模量与抗压强度的关系,并对混凝土碳化和收缩公式进行了拟合。[关键词]再生混凝土;抗压强度;碳化;收缩;弹性模量中图分类号:TU528 文献标识码:A 文章编号:1002-848X(2013)01-0073-03Experimental study on mechanical performances of recycled concreteHao Tong, Shi Lei, Chen Jingjing(School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China)Abstract: Preparation of five different mix of recycled brick concrete blocks was done. The compressive strength, carbonation depth, elastic modulus, shrinkage and other mechanical performances were obtained through the tests. The relationships between the axial compressive strength and cube compressive strength, elastic modulus and compressive strength were obtained. Carbonation and shrinkage formulas of concrete were also fitted.Keywords: recycled concrete; compressive strength; carbonation; shrinkage; elastic modulus* 2010年度河南省墙改基金项目(2010-18)作者简介:郝彤,博士,教授,Email: haotong@zzu.edu.cn参考文献[1]刘秦.再生废砖粗骨料混凝土配合比及物理性能试验研究[D].郑州:郑州大学,2010.[2]蒋业浩. 再生混凝土抗压强度及配合比设计研究[D]. 南京:南京航空航天大学,2006.[3]蔡秀兰.再生细集料混合砂浆配合比及物理性能试验研究 [D].郑州:郑州大学,2010.[4]史魏,侯景鹏.再生混凝土技术及其配合比设计方法[J].建筑技术开发,2001,28(8):18-20.[5]张亚梅,秦鸿根,孙伟,等.再生混凝土配合比设计初探[J].混凝土与水泥制品,2002(1):7-9.