A uniaxial tensile test is the most objective method for obtaining the tension softening diagrams of concrete. However, it is very difficult to maintain uniform stress conditions in the cross section of specimens because of a secondary flexure. The flexure…
A uniaxial tensile test is the most objective method for obtaining the tension softening diagrams of concrete. However, it is very difficult to maintain uniform stress conditions in the cross section of specimens because of a secondary flexure. The flexure is supposed to be produced by the initiation of softening not in the whole cross section but from the weakest surface. It is clear that some means are necessary to prevent it in the test. In this paper, some uniaxial tensile tests of unnotched concrete specimens using originally designed apparatus are introduced. A useful bit of information obtained from the tests is also reported.