International Conference on Civil Engineering and Architecture Design, South Carolina, United States Of America, 3 - 04 August 2021, pp.10
Fiber reinforcement is used to enhance the properties of cement paste, mortar and concrete and many types of fibers are considered in many researches. In this experimental research, spring shaped steel fiber (SSSF) with 18 mm length and 6.4 mm diameter is used. SSSF is made of Stainless Steel 302 with 2031 MPa tensile strength. Mechanical (compressive strength, splitting tensile strength, bending strength and elasticity modulus) and fracture (load-deflect and load-CMOD) parameters of notched beam specimens are obtained. It is found that addition of SSSF up to 10 kg/m3increases the splitting tensile strength, bending strength and elasticity modulus test results. However, utilization of SSSF up to 40 kg/m3 increases the toughness and CMOD under peak load. It is concluded that the effect of properties of SSSF (i.e., stainless steel strength, spring length and diameter, spring rigidity) should be investigated in the further researches.