Abrasion Characteristics of Concrete Pile due to Littoral Drift

Abstract

A series of abrasion tests of three types of concrete piles were carried out by use of a large scale U-shaped tube which generated a strong oscillatory flow with sand drift. Abrasion rates of usual concrete and underwater concrete are the same and larger than centrifugal concrete. Abrasion rate of concrete is roughly proportional to the 2nd-3rd power of amplitude of velocity. The larger the ratio of sand particle diameter to pile diameter, the larger abrasion rate.