No abstract

In order to study the tensile strength of reactive powder concrete (RPC) with different volume fraction of steel fiber (V f =0%, 1%, 2%), the axial tensile tests were completed using self-designed equipment. The splitting tensile test and flexural tensile test were developed at the same time. The results indicated that the ratio of axial tensile strength and splitting tensile strength of RPC is descending as the steel fiber volumetric ratio increasing, but the ratio of axial tensile strength and flexural tensile strength is almost stabilized.

No abstract

Abstract. The full process axial tension test is conducted for reactive powder concrete (RPC) with three kinds of steel fiber volume ratios. The dumbbell test piece with varying section of arc transition is adopted in the test with copper washer of varying thickness to address the problem that it is easy for outer clamp test piece to have stress concentration at the end. As suggested by the test results, the axial tension stress-strain curve can be measured on the normal universal tester for RPC axial tension test piece of V f ＝1％and 2% without adding any rigid auxiliary facility. The damage type of RPC axial tension changes from brittle fracture to ductile damage when there is no fiber.