Abstract:The influences of impinging velocity and impinging angle on abrasion erosion resistance of marine concrete caused by the surged wave carring sand were investigated. The abrasion erosion strengths of concretes incorporating different mineral admixtures were compared. The results reveal that the impinging velocity and impinging angle have significant effects on the abrasion erosion resistance of marine concrete. Under the condition of the same cementing materials system, the stable abrasion rate of marine concrete increases and the abrasion erosion strength of marine concrete decreases with increasing impinging velocity. With the impinging angle increasing, the stable abrasion rate of marine concrete increases. The increasing rate of stable abrasion rate is comparatively high when the impinging angle is smaller than 60°, whereras it becomes small when impinging angle is greater than 60°. The stable abrasion rate of marine concrete reaches the maximum value when the impinging angle is 90°. On the basis of the same compressive strength level, the silica fume makes the greatest contribution to abrasion erosion strength of the concrete, and the combined addition of slag and fly ash improves the abrasion erosion strength of the concrete remarkably.