钻芯法检测混凝土劈裂抗拉强度试验研究
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(1 山东省建筑科学研究院， 济南 250031； 2 青岛市建筑工程质量监督站， 青岛 266071; 3 济南动物园管理处，济南 250031)［摘要］介绍采用钻芯法检测混凝土劈裂抗拉强度的试验方法，对比分析采用不同加载方式、混凝土芯样直径和高径比对混凝土芯样劈裂抗拉强度的影响。试验结果表明，混凝土芯样劈裂抗拉强度与混凝土标准立方体试块劈裂抗拉强度密切相关，加载方式对混凝土芯样劈裂抗拉强度影响较大，采用不同直径的混凝土芯样应考虑尺寸效应的影响，采用小高径比混凝土芯样检测混凝土劈裂抗拉强度是可行的。［关键词］钻芯法; 劈裂抗拉强度; 侧面加载; 端面加载; 高径比; 尺寸效应中图分类号：TU528.1 文献标识码：A 文章编号：1002-848X(2014)21-0072-03Experimental study on concrete splitting tensile strength by core drilling method detectionKong Xuwen1, Cui Shiqi1, Yao Hong2, Li Haiwen1, Zhu Feng3(1 Shandong Provincial Academy of Building Research, Jinan 250031, China; 2 Qingdao Construction Quality Supervision Station, Qingdao 266071, China; 3 Jinan Zoo Administration Office, Jinan 250031, China)Abstract: The experimental method of concrete splitting tensile strength by core drilling method detection was introduced. Influences of different loading methods, diameters and height-diameter ratios of the concrete splitting tensile strength of the core samples were compared and analyzed. Experimental results show that concrete splitting tensile strength of core samples and standard concrete test cube splitting tensile strength are closely related. Loading method influences splitting tensile strength of the concrete core samples a lot. The influence of size effect should be considered if the core samples with different diameters are adopted. It is feasible to use the core samples with small height-diameter ratio to test splitting tensile strength of concrete.Keywords: core drilling method; splitting tensile strength; side loading; transverse loading; height-diameter ratio; size effect作者简介：孔旭文，学士，研究员，Email：kongxuwen@sina.com。参考文献［1］CECS 03∶2007 钻芯法检测混凝土强度技术规程［S］.北京：中国标准出版社，2007.［2］GB/T 50081—2002 普通混凝土力学性能试验方法标准［S］.北京：中国建筑工业出版社，2003.［3］JGT E30—2005 公路工程水泥及水泥混凝土试验规程［S］.北京：人民交通出版社，2005.
