Transcription of Concrete Floor Covering Failures - Foundation
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18 August 2004 FPAWJEC oncrete FloorCovering FailuresB. Lee Lawrence, Lee Lawrence, , Janney, Elstner Associates, , Janney, Elstner Associates, Pond Springs Road, Suite 10713581 Pond Springs Road, Suite 107 Austin, Texas 78729 Austin, Texas 7872918 August 2004 FPAWJEI ntroduction Background:Background: Contributors to failure Mechanisms of failure Unique Floor Covering failure Case Studies:Unique Floor Covering failure Case Studies: Alkali-silica reaction Sulfate attack Osmotic pressure Chemical attack (alkaline hydroxide)18 August 2004 FPAWJEC ontributors to failure The Commonly Accused Culprits Improper Application and Material ProblemsImproper Application and Material Problems Vapor and Vapor PressureVapor and Vapor pressure Moistur
FPA 18 August 2004 WJE Vapor and Vapor Pressure •Vapor - “ a substance in the gaseous state, as distinguished from solid or liquid matter” •Water Vapor Pressure – caused by a water vapor gradient, e.g. movement from areas of high humidity to areas of low humidity
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