Characteristics of Basalt Macro-Fiber Reinforced Recycled Aggregate Concrete

This study aims to examine the impact of using basalt macro-fibers (BMF) on characteristics concrete made with recycled aggregates (RCA). Test variables included initial grade (normal- and high-strength (NSC HSC)), RCA replacement percentage (30 60%), BMF volume fraction (νf = 0.5 1.5%). The compressive strength reduction in plain caused by was sensitive rather than grade. splitting flexural reductions HSC were more significant those their NSC counterparts. use compromised workability. Such a detrimental effect increased content pronounced for 60% RCA. Reinforcing RCA-based tended improve mechanical properties. In some instances, at νf > 1% decay gain. addition had potential fully restore original strengths mixtures natural (NA). increase was, however, not sufficient NA-based concrete. resistances water penetration abrasion improved up 17% 47%, respectively, due BMF. Idealized tensile softening laws established reinforced