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Silica Fume Concrete: A Solution to Steel Reinforcement Corrosion in Concrete

by J. T. Wolsiefer, Sr., Norcem Concrete Products Inc, Fort Pierce, United States,



Document Type: Proceeding Paper

Part of: Utilization of Industrial By-Products for Construction Materials

Abstract:

This paper discusses the utilization of silica fume concrete admixture to prevent reinforcing steel corrosion. The mechanism of steel corrosion in salt impregnated concrete is described, along with first phase laboratory test data showing how ordinary concrete's corrosion prone characteristics are altered by the use of silica fume. The second phase test program evaluated the corrosion performance of full size concrete bridge sections, including beams, columns, piles and bridge deck panels. The test members were subjected to environments simulating salt water and deicing agents, for 370 days. Test results show that silica fume admixture prevents salt induced corrosion of steel rebar and tensioning strands.

Subject Headings: Reinforced concrete | Corrosion | Steel | Silica | Concrete admixtures | Reinforcing steel | Laboratory tests

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