鉆芯法檢測混凝土劈裂抗拉強度試驗研究
孔旭文1,崔士起1,姚宏2,李海文1,朱鋒3
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(1 山東省建筑科學(xué)研究院， 濟(jì)南 250031； 2 青島市建筑工程質(zhì)量監(jiān)督站， 青島 266071; 3 濟(jì)南動物園管理處，濟(jì)南 250031)［摘要］介紹采用鉆芯法檢測混凝土劈裂抗拉強度的試驗方法，對比分析采用不同加載方式、混凝土芯樣直徑和高徑比對混凝土芯樣劈裂抗拉強度的影響。試驗結(jié)果表明，混凝土芯樣劈裂抗拉強度與混凝土標(biāo)準(zhǔn)立方體試塊劈裂抗拉強度密切相關(guān)，加載方式對混凝土芯樣劈裂抗拉強度影響較大，采用不同直徑的混凝土芯樣應(yīng)考慮尺寸效應(yīng)的影響，采用小高徑比混凝土芯樣檢測混凝土劈裂抗拉強度是可行的。［關(guān)鍵詞］鉆芯法; 劈裂抗拉強度; 側(cè)面加載; 端面加載; 高徑比; 尺寸效應(yīng)中圖分類號：TU528.1 文獻(xiàn)標(biāo)識碼：A 文章編號：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作者簡介：孔旭文，學(xué)士，研究員，Email：kongxuwen@sina.com。參考文獻(xiàn)［1］CECS 03∶2007 鉆芯法檢測混凝土強度技術(shù)規(guī)程［S］.北京：中國標(biāo)準(zhǔn)出版社，2007.［2］GB/T 50081—2002 普通混凝土力學(xué)性能試驗方法標(biāo)準(zhǔn)［S］.北京：中國建筑工業(yè)出版社，2003.［3］JGT E30—2005 公路工程水泥及水泥混凝土試驗規(guī)程［S］.北京：人民交通出版社，2005.
