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Item Information   Holdings       More by this author     Grochala, Charles     Subjects     Concrete -- Testing     Portland cement -- Corrosion     Reinforcing bars -- Corrosion     Fly ash     Alkali-aggregate reactions -- Testing     MSST Project.     Browse Catalog     by author:      Grochala, Charles       by title:      Testing of a local f...         MARC Display

Testing of a local fly ash in mitigating alkali silica reaction / by Charles Grochala. by Grochala, Charles Subjects Concrete -- Testing   Portland cement -- Corrosion   Reinforcing bars -- Corrosion   Fly ash   Alkali-aggregate reactions -- Testing   MSST Project. Description:  41 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Dr. John Zachar Committee members: Dr. Richard DeVries, Christopher Raebel Introduction, literature review, and elementary theories -- Detail of procedure -- Data/results -- Conclusion -- A: Raw data -- B: Photographs of tools and equipment used. Alkali-silica reaction is a fairly well documented phenomenon, caused by the alkali in Portland cement reacting with siliceous aggregates to form an expansive gel. Over time, the gel absorbs water and expands. This may cause expansion significant enough to compromise the host concrete's structural integrity. The purpose of this research is to examine the use of fly ash as a means of mitigating this reaction. This experiment follows a modified version of ASTM C 1260, the mortar bar method for testing potential for alkali-silica reaction, with minor variations to allow for testing of a local fly ash in mitigating alkali-silica reaction. The resultant data indicate that the addition of the tested Class C fly ash will reduce the effects of alkali-silica reaction with a 20% or more replacement of Portland cement with fly ash. The author recommends that a version of ASTM C 1293, the concrete prism test, be used in order to better determine an expected field performance.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .G757 2010 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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