Closure to 'Bridge Pier Scour in Clay-Sand Mixed Sediments at Near-Threshold Velocity for Sand' by Koustuv Debnath and Susanta Chaudhuri

摘要

The writers appreciate the careful evaluation of the paper by the discussers. In our experiments, careful consideration was made to manually achieve a homogeneous bed. During the addition of water in the clay-sand dry mix, it was found that a substantial number of small nodules of dry clay-sand particles surrounded by a wet clay layer were formed within the sediment-water mix. To crush those nodules of clay and achieve a homogeneous mixture of clay-sand-water, the wet mixture was forced to pass through a 5-mm sieve net. A continuous force was applied by hand to push the mixture through the sieve and achieve greater homogeneity. Molinas and Hosny (1999) reported a similar procedure for achieving homogeneity of the clay-sand-water mixture in their experiments.