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《Journal of Hydroelectric Engineering》 2016-01
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Extension and application of transverse cutting method for tensile strength measurement of concrete

YUAN Qun;LI Liqing;LU Yao;Key Laboratory of Hydraulic Engineering Safety Technique of Henan Province;College of Water Conservancy & Environmental Engineering, Zhengzhou University;Henan Provincial Water Conservancy Research Institute;  
The transverse cutting method for tensile strength measurement of concrete is further investigated based on the authors' previous study. A parametric numerical study was conducted and the results show that when the central angle of load blade increases in the range of 60° to 135°, the load distribution on the cylinder surface changes from approximately linear to parabolic, and the greater central angle, the more reasonable stress distribution on the splitting surface. The experimental study demonstrates that the test data become more stable and reliable when the ratio of cylinder specimen height to diameter is increased up to 0.7. The central angle has less influence on transversal splitting strength, while load blade width has relatively larger influence and the load device 5-90 is optimal. We have derived a formula for calculation of the splitting strength and applied this method to analysis of concrete material in practice, including carbonized concrete, partially carbonized concrete, and non-carbonized concrete, showing its unique advantage in testing of concrete tensile strength.
【Fund】: 水利部公益性行业科研专项(201301027);; 河南省重点科技攻关项目(092102310193)
【CateGory Index】: TV431
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