Experimental study on hydraulic fracture behavior of concrete with wedge-splitting testing

Abstract The aim of this paper is to investigate the water pressure effects on hydraulic fracture behavior concrete with wedge-splitting testing under dynamic loading. Five waterproof strain gauges are stuck along crack path observe process during experiments. Four silicon sensors successfully measured value face. results show that faces accelerates propagation concrete. critical values splitting force decrease 26.7 and 25.6%, respectively, external applied 0.2 0.4 MPa. Moreover, speed increases at beginning tends reach a peak finally. cracking 11.08 m/s, which high. Under loading, fails fill only trapped interacts mainly parabolic curve distribution decreases increase in length.