Abstract
In addition to strength, the durability of concrete is a major characteristic to measure its quality. Abrasion and accidental impacts are types of loads that negatively influence the strength and durability of concrete. This article aims to compare the water-impact and drop-mass impact resistances of reactive powder concrete (RPC). Three mixtures of RPC were prepared to evaluate their abrasion resistance using the water jet method in addition to their impact resistance using the repeated drop-mass impact test based on the ACI 544-2R repeated impact procedure. All of the three mixtures have same material properties and a fiber content of 2.5% by volume. One of them contains steel fiber with length of 6 mm, the second contains 15 mm steel fiber, and the last one contains a combination of 15 and 6 mm steel fibers. The experimental work results showed that the mixture contains 15 mm steel fibers showed the best abrasion and impact resistances, while the combination of 15 and 6 mm steel fibers showed the lowest impact resistance and the lowest abrasion resistance at the first six hours. The resulted compressive strength values were close, but that of the sample contains 15 mm fibers was the highest.
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