Abstract: Using sandblasting test and image analysis technology, this study examines time variations in weight loss rate, volume loss rate, density of abraded materials, and scour hole contour of two different concrete specimens. We obtain a steady state criterion of concrete abrasion erosion by combining the apparent morphology of concrete at feature time points, and optimize the reliable assessment index of concrete abrasion resistance based on abrasion calculations. Results indicate the weight loss rate and volume loss rate tend to be stable at a certain point of time. And afterward, the density of abraded material is consistent with the bulk density of concrete, and the scour hole contour and apparent morphology show a steady and uniform abrasion erosion of concrete, thereby providing a criterion for determining the steady state of abrasion. This study demonstrates the volume loss rate that tends to be stable is a reliable assessment index of concrete abrasion resistance.

Key words: concrete, abrasion resistance, steady state, criterion, volume loss rate