Abstract
Size effect rule for common concrete fracture toughness was obtained from the analysis of common concrete fracture test results by wedge splitting fracture experiment. Combining the common concrete results with the existing size effect formula for common concrete fracture toughness and size effect formula for nominal fracture toughness was based on the Hu's formula; suitable size effect formula for common concrete nominal fracture toughness was confirmed by comparing the computation results of the models. With the continuous improvement of construction technology and the continued construction of dam, common concrete has been very widely used. But the temperature cracks in the massive concrete structures still behave in an outstanding manner. Therefore, the fracture properties of common concrete in- depth study is necessary. China had numerous common concrete fracture test studies and obtained some results in the nineties of the last century. In order to understand the applicability of size effect formula for common concrete nominal fracture toughness in detial, common concrete wedge splitting tensile tests were carried out, and the size effect law of common concrete nominal fracture toughness was obtained on the analysis of test results and the suitable formula was determined.
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