Microsilica (Silica Fume) Concrete Durability in Severe Environmentsby Mark D. Luther, Elkem Materials Inc, United States,
Abstract: Microsilica (silica fume) concrete has provided increased durability in a variety of aggressive environments. Technical information is presented for microsilica concretes exposed to fire, abrasion, frost, marine, and various chemical environments including chlorides, sulfates, and acids. Also, the resistance of microsilica concrete to the actions of burglars (jackhammering, coring, torching, etc.) is discussed. Examples of structures that have used microsilica concretes to improve durability in severe environments are presented. The performance of the microsilica concretes used in these structures has, to date, generally confirmed the favorable results predicted by many laboratory investigations.
Subject Headings: Concrete | Silica | Load and resistance factor design | Fire resistance | Material durability | Frost | Information management | Mississippi | United States | North America
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