In order to obtain tension softening curves, the authors carried out both the uniaxial tension test and the 3-point bending test with different types of concrete: normal concrete, highly-flowable concrete and high-early-strength concrete. For the uniaxial tension test, a specially…
In order to obtain tension softening curves, the authors carried out both the uniaxial tension test and the 3-point bending test with different types of concrete: normal concrete, highly-flowable concrete and high-early-strength concrete. For the uniaxial tension test, a specially designed gear system was adopted for avoiding secondary flexure. For the 3-point bending test, inverse analysis was done. The tension softening curves obtained by both tests were compared and found to be roughly similar, on each type of concrete. How- ever, since the accuracy of the inverse analysis procedure, which uses test results of the 3-point bending test for obtaining tension softening curves, is limited, the original uniaxial tension test with the elimination of sec- ondary flexure, as proposed by the authors, is more effective for obtaining the tension softening curve of con- crete.