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dc.contributor.advisorZollinger, Dan G.
dc.creatorSun, Peizhi
dc.date.accessioned2013-12-16T20:12:30Z
dc.date.available2013-12-16T20:12:30Z
dc.date.created2013-08
dc.date.issued2013-07-22
dc.date.submittedAugust 2013
dc.identifier.urihttp://hdl.handle.net/1969.1/151295
dc.description.abstractExcessive early-age concrete surface moisture evaporation causes many problems of concrete pavements, such as plastic shrinkage cracking and delamination; the use of liquid membrane-forming curing compounds is one of the most prevalent methods to mitigate the issues. However, the present standard test, ASTM C 156-98, “Standard Test Method of Water Retention by Concrete Curing Materials” has some inherent limitations in assessing the curing effectiveness of concrete. To better apply curing practices and qualify the curing compound, a new evaluation protocol is introduced in this study. The new protocol consists of using measured relative humidity and temperature to calculate an effectiveness index (EI) which serves as an indicator of the effectiveness of curing. Moistures loss and surface abrasion resistance measurements were made on concrete specimen, and were found to have significant correlation with EI, where higher EI were associated with lower moisture loss and higher surface abrasion resistance. EI was also found to be sensitive to ambient wind condition, types of curing compound and the application rate of the curing compound. Dielectric constant (DC) measurements were also made on concrete specimens indicating the free moisture content on the surface concrete. The DC measurements were also found to differentiate the quality of curing under different ambient conditions, with various types of the curing compounds and the w/c of the concrete mixture. The utility of using the new protocol to assess concrete curing compound effectiveness was also evaluated under the field condition. Both EI and DC measurements showed potentials to distinguish the curing quality for concrete pavement construction.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectConcreteen
dc.subjectConcrete curingen
dc.subjectCuring compoundsen
dc.titleA New Protocol for Evaluating Concrete Curing Effectivenessen
dc.typeThesisen
thesis.degree.departmentCivil Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorTexas A & M Universityen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelMastersen
dc.contributor.committeeMemberLytton, Robert L.
dc.contributor.committeeMemberHaque, Mohammed
dc.type.materialtexten
dc.date.updated2013-12-16T20:12:31Z


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