ABSTRACT
The properties of chloride penetration of hybrid fiber reinforced self-compacting concrete (SCC) were investigated
in this study. The results show that the chloride penetration resistance of concrete can be improved by single
incorporation either carbon or cellulose fibers. The concrete chloride diffusion coefficient DRCM of 12-cm length
carbon SCC with fiber content of 1.7, 2.72, and 3.4 kg/m3
decreases by 10.3, 25.5, and 18.2% compared to
reference concrete without any fibers, respectively. Moreover, the concrete chloride diffusion coefficient DRCM of
cellulose SCC with fiber content of 1.2, 1.6, and 2.0 kg/m3
decreases by 18.8, 22.4, and 26.7% compared to
reference concrete, respectively. Based on the results of orthogonal experimental design, the chloride diffusion
coefficients DRCM of hybrid fiber reinforced SCC are listed in order of importance, as follows: length of carbon
fiber > content of carbon fiber > content of cellulose fiber; furthermore, the hybrid of 2.72-kg/m3
carbon fiber with
length of 12 mm and 2.0-kg/m3
cellulose fiber exhibits the most significant effect on chloride diffusion coefficients
DRCM of SCC.