コンクリート引張強度試験法に関する基礎的研究(I) : 割裂引張強度試験法

概要

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In the spliting tensile strength test in JIS (Japanese Industrial Standards), the formula to be used in the caluculation for the tensile strength of concrete is based on the assumption about the elasticity and the ideal line load directly applied to the side of a cylindrical specimen without anything between the specimen and bearing plate of testing machine. However, it is observed from the spliting tensile strength tests that the distribution of load directly applied to the specimen by the bearing plates is not ideal line but belt shape. Therefore, in order to clarify the difference of the stress distribution along the diametric axis of the specimen between the test with ideal line load and with belt shape load, the authors carried out the stress analysis of the specimen by useing elastic theory. The analytical results clearly indicate the effects of the distribution width of load, and the tensile strength obtained from the spliting tensile test becomes about 12% small than the pure tensile strength of concrete when the width of load distribution is 1/15 of the diameter of the sylindrical specimen.
1985-01-31