Bond-slip characteristics of steel fibers in high reactivity metakaolin (HRM) modified cement-based matrices

Pull-out tests were carried out on deformed steel fibers embedded in cement-based matrices. Four matrices including plain cement paste, cement paste with 10% silica fume, cement paste with 10% high reactivity metakaolin (HRM), and cement paste with a combination of 5% silica fume and 5% HRM in the same mix were investigated. Based on the resulting bond-slip curves, HRM was found to be more effective in improving the pull-out performance than...