Abstract: Uniaxial Tensile Test (UTT) is internationally recognized as the most comprehensive test method which can display the tensile properties of HPFRCC, but the operation of UTT test is so complicated that it is inconvenient to take quality control in practice. According to the measured load-deflection curve of four-point bending test, section equilibrium conditions and stress and strain distribution, the calculating method on tensile properties of HPFRCC was established by evaluating four-point bending test results. The model assumes that the stress distribution of HPFRCC in compressive zone is linear and stress distribution in tensile zone is bilinear, which is in accordance with the performance of HPFRCC and is simple for calculating. Comparisons between the calculated and measured results indicate that proposed model is able to evaluate the tensile properties of HPFRCC, which provides an indirect analysis method on the tensile strength and ultimate tensile strain of HPFRCC for practical application.

Key words: high performance fiber reinforced cement composites, PVA fiber, four-point bending, tensile properties