Effects of curing methods and supplementary cementitious material use on freeze thaw durability of concrete containing d-cracking aggregates : [technical summary].
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2013-12-01
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Abstract:For concrete pavements in Kansas, the most effective method of increasing their sustainability is to increase the service life. One of the principle mechanism of concrete pavement deterioration in Kansas is freezing and thawing damage. Some Kansas limestone aggregates are known to be very susceptible to D-cracking and have resulted in millions of dollars in maintenance costs. The Kansas Department of Transportation (KDOT) has developed rigorous testing procedures for limestone aggregate use in concrete pavement, including that they pass the KT-MR-22 concrete prism freezing and thawing test, which can take up to 6 months to complete. This project aimed to 1) shorten significantly the total time needed to perform the KT-MR-22 test method by changing the curing methods used and 2) determine any change in concrete freeze-thaw resistance as a result of a change in the concrete permeability from the use of supplementary cementitious materials (SCMs).
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