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Alkali Silica Reaction in concrete made from Arkansas region aggregates

Posted on:2017-01-02Degree:M.SType:Thesis
University:University of Arkansas at Little RockCandidate:Mallu, Adithya ReddyFull Text:PDF
GTID:2452390005482885Subject:Civil engineering
Abstract/Summary:
Alkali-Silica Reaction is an unwanted reaction which occurs over time between cement paste and silica. This in turn alters the expansion of the aggregate and often in an unpredictable way, which will result in loss of strength of concrete and complete failure. This research studies the effects of using locally available coarse and fine aggregates available in Arkansas. This research will provide the necessary information in selecting the type of aggregate that is to be used in constructions and a viable comparison between different aggregates available in Arkansas have been made. Different materials used for preparation of concrete samples have been mentioned. A major criterion in this research is the increase in the length of the concrete samples being tested with time. The time span selected for this research is about two years for the results to be used in real conditions. After testing different samples, crushed limestone with Arkansas River Sand has shown minimum expansion over chosen period, the expansion percentage from this material was 0.01% after a period of two years.;Key Words: Alkali-Silica-Reaction(ASR), Expansion due to Alkali-Silica-Reaction, Aggregates, Supplementary Cement Materials.
Keywords/Search Tags:Reaction, Aggregates, Concrete, Arkansas, Expansion
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