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The Influence of Protective Material on Local Scour Dimensions

by Lisa M. Fotherby, Colorado State Univ, Fort Collins, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Protective materials installed around the base of a bridge pier can reduce or prevent local scour. The performance of four materials: grout mats, grout bags, footings, and riprap, are compared in a laboratory flume study. Performance was evaluated on the basis of scour dimensions around each material. The results of testing indicated that the depth and size of the scour hole varied with the protection material applied and the three materials tested were effective at reducing scour even beyond the limits of the protective layer.

Subject Headings: Scour | Grouting | Construction materials | Material tests | Riprap | Piers | Laboratory tests

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