Experimental investigations on tensile and fracture behaviors of steel fiber-reinforced self-compacting concrete

Huayan Yao; Guangyu Zhou; Fan Yang; Hua Lu; Xingqi Zhang

Research Article

Recieved:

06/11/2025

Accepted:

19/03/2026

Page:

–

doi:

http://dx.doi.org/10.17515/resm2026-1324me1106rs

Views:

Experimental investigations on tensile and fracture behaviors of steel fiber-reinforced self-compacting concrete

Huayan Yao^1,², Guangyu Zhou ², Fan Yang², Hua Lu ¹, Xingqi Zhang ³

¹North Minzu University, Yinchuan, China
²School of Civil Engineering, Hefei University of Technology, Hefei, China
³Hefei Municipal Design and Research Institute Co., Ltd., Hefei, China

Abstract

To investigate steel fiber’s influence on self-compacting concrete (SCC)’s tensile and fracture properties, Brazilian disc splitting and Notched Semi-Circular Bending (NSCB) tests were conducted. The effects of steel fiber length, diameter, and volume fraction on SCC’s tensile strength and fracture toughness, as well as the correlation between the two properties in steel fiber-reinforced SCC (SFRSCC), were analyzed. Results show: tensile strength first increased then decreased with rising fiber length, diameter, and volume fraction; fracture toughness first rose then fell with length and diameter but increased continuously with volume fraction. Steel fiber volume fraction had a more significant impact on NSCB’s secondary bearing stage than length or diameter. A significant linear relationship was found between the tensile strength and fracture toughness of SFRSCC.