Abstract
Abstract This paper describes a laboratory study of surface treatments on the abrasion resistance of concrete. A test method based on rotating steel wheels running in a circular path was adopted to assess the abrasion resistance. The reported data are from a series of tests performed on relatively large slabs so that power trowelling and finishing could be used to produce the test surfaces. These slabs were used to assess the effects of various treatments on abrasion resistance, including both liquid surface treatments and dry shake surface treatments. Concrete liquid hardeners were more effective in improving the abrasion resistance of mixes with low water-cement ratios rather than those with high water-cement ratios. Proper curing, however, of the concrete slabs was more effective in improving the abrasion resistance than the application of concrete liquid hardeners. Penetrating sealing and hardening treatments significantly increased the abrasion resistance of all types of concrete mixes. The abrasion resistance obtained by the use of penetrating sealer and hardener treatments ranked highest when compared with other air-cured specimen slabs. The application of these treatments reduced the influence of concrete mix design on the abrasion resistance of the slab.
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