Concrete for Sealing Voids in Rubble Structuresby D. P. Simpson, CH2M Hill, Bellevue, United States,
B. D. Neeley, CH2M Hill, Bellevue, United States,
D. M. Walley, CH2M Hill, Bellevue, United States,
Abstract: Permeability of rubble-mound breakwaters and jetties to sand transport and wave transmission results in increased costs for dredging and navigation. Guidance is provided for economically rehabilitating permeable rubble structures by injecting cementitious sealants into specified zones in the structure's interior. In the present research one new mixture was developed which has the favorable characteristics of ease of pumping, spread and continuity within the structure, cohesion, resistance to washout or dispersion, dilution, and erosion while hardening, rapid set time, and strength.
Subject Headings: Riprap | Permeability (soil) | Sediment transport | Permeability (material) | Breakwaters | Jetties | Sand (hydraulic) | Sand waves
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