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Abrasion Resistance of Concrete

1991; American Society of Civil Engineers; Volume: 3; Issue: 1 Linguagem: Inglês

10.1061/(asce)0899-1561(1991)3

1943-5533

P Laplante, P.-C. Aı̈tcin, Daniel Vézina,

Concrete Properties and Behavior

The abrasion resistance of 12 concretes is compared with the ASTM C779‐82 (procedure C) testing method. Four different types of aggregates were used; their source rocks are completely characterized in terms of compressive strength, modulus of elasticity, Los Angeles loss, and abrasion resistance. The first series of air‐entrained concretes show that while silica fume can slightly improve concrete abrasion resistance, coarse aggregate nature is more significant. The second series, focusing on the effect of water/cementitious ratio (W/C) on abrasion resistance, reveal that as long as W/C is maintained at about 0.30, the concrete's abrasion resistance almost equals that of the coarse‐aggregate source rock. The third series demonstrates that abrasion resistance in high‐strength concretes with very low W/C is largely determined by that of the coarse aggregate. It is noted, however, that when the wet‐sieved concrete (mortar) and aggregate are of roughly equal abrasion resistance, the concrete itself exhibits slightly higher resistance than either of them alone.