Abstract
Slurry seal is a preventive maintenance method to preserve pavement. This research is focused on the effect of steel slag filler (SSF) as a natural filler (NF) substitute on the behaviour of slurry seal mixtures. Five different combinations containing 100% NF, 25% SSF + 75% NF, 50% SSF + 50% NF, 75% SSF + 25% NF, and 100% SSF based on the total filler weight were used. The samples were evaluated by the wet cohesion, wet track abrasion, loaded wheel-displacement, and loaded wheel-sand adhesion tests. For investigating the SSF impact on the performance characteristics of mixtures, an analysis of variance (ANOVA) was performed. The results indicated that mixtures with 75% SSF increase the bitumen cohesion by 45%, decrease the displacement by 50.8%, improve the abrasion resistance by 48.3%, and reduce the bleeding by 29.3%. ANOVA results showed that SSF has the greatest effect on increasing the adhesion and reducing the displacement in slurry seal.
Disclosure statement
No potential conflict of interest was reported by the author(s).