期刊
NUCLEAR ENGINEERING AND DESIGN
卷 250, 期 -, 页码 173-183出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.nucengdes.2012.05.004
关键词
Concrete; Tensile strength; Strain rate; Direct tension; Splitting tension; Four-point loading
资金
- National Natural Science Foundation of China [50979032, 51178162]
This paper presents a comparative experiment and analysis of three different methods (direct tension, splitting tension and four-point loading flexural tests) for determination of the tensile strength of concrete under low and intermediate strain rates. In addition, the objective of this investigation is to analyze the suitability of the high stressed volume approach and Weibull effective volume method to the correlation of the results of different tensile tests of concrete. The test results show that the strain rate sensitivity of tensile strength depends on the type of test, splitting tensile strength of concrete is more sensitive to an increase in the strain rate than flexural and direct tensile strength. The high stressed volume method could be used to obtain a tensile strength value of concrete, free from the influence of the characteristics of tests and specimens. However, the Weibull effective volume method is an inadequate method for describing failure of concrete specimens determined by different testing methods. (C) 2012 Elsevier B.V. All rights reserved.
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