Abrasion resistance of concrete as a two-phase composite material

Abstract

Abstract In this paper, concrete is treated as a two-phase composite material to investigate its resistance to abrasion. A relation based on the mixtures rule is considered; this predicts the abrasion resistance of concrete from the abrasion resistances and volume fractions of the mortar and coarse aggregate phases. Evaluation of the results of test on composites with coarse aggregate volume fractions ranging from 0 to 0.40 showed good agreement to this relation. The effects of aggregate type and water—cement ratio on abrasion properties of the constituent phases of the composite are discussed. The relations between the abrasion depth of concrete with length of slide have indicated good agreement to the theory of abrasion offered for metals; and correlations with some other mechanical properties of concrete have been demonstrated.