Tensile behaviors of highly flowable strain hardening fiber reinforced concrete

Abstract

Highly flowable strain hardening fiber reinforced concrete (HF-SHFRC) combines the excellent workability of self-consolidating concrete (SCC) in the fresh state, with the strain-hardening and multiple cracking characteristics of high performance fiber reinforced cementitious composites (HPFRCC) in their hardened state. This paper presents six HF-SHFRC mix designs, with compressive strengths ranging from 35 to 66 MPa. The results of two tensile tests, direct tensile test (dog-bone shaped specimen) and long prismatic tensile test with continuous reinforcement, are also carried out in this paper. All the mixtures show quite satisfactory in flowability and tensile properties, including strain-hardening and enhanced strain capacity due to the presence of the reinforcing steel strand. © 2012 WIT Press.