Early age concrete thermal stress measurement and modeling

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dc.contributor.advisor Folliard , Kevin J . en_US
dc.contributor.advisor Juenger , Maria C . G . en_US
dc.identifier.oclc 174149592 en_US
dc.creator Riding , Kyle Austin , 1978 - en_US
dc.date.accessioned 2008 -08 -28T23 :38 :33Z
dc.date.accessioned 2014 -02 -19T22 :33 :15Z
dc.date.available 2008 -08 -28T23 :38 :33Z
dc.date.available 2014 -02 -19T22 :33 :15Z
dc.date.created 2007 en_US
dc.date.issued 2008 -08 -28T23 :38 :33Z
dc.identifier.uri http : / /hdl .handle .net /2152 /3281
dc.description.abstract A large amount of heat can be liberated during cement hydration , causing very large temperature increases in mass concrete members . The non -uniform temperature field produced by the cement during curing can cause very high internal stresses that may crack the concrete . Concrete thermal cracking in very large structures is a well -known phenomenon and was studied extensively during the height of dam construction in the United States . In recent years concrete bridge member sizes have increased for structural and aesthetic reasons . Recent problems in San Antonio and Houston , Texas with thermal cracking and very high internal temperatures in mass concrete bridge members has renewed interest in studying early -age thermal cracking and its mechanisms . In order to predict the early -age thermal cracking risk of a concrete member , the temperature history , autogenous shrinkage , modulus development , tensile strength development , coefficient of thermal expansion development , creep behavior , and external restraint conditions must be known . A testing procedure has been developed to measure concrete heat of hydration , mechanical property development , and free shrinkage response at different curing temperatures . The concrete free shrinkage includes thermal and autogenous shrinkage components and is measured using a newly developed free shrinkage testing apparatus . The early age concrete creep is calculated from rigid cracking frame tests performed at different varying temperatures . Trends in early age creep behavior for different concrete mixtures common in mass concrete have been found and are used to develop a statistical model relating concrete mixture proportions and constituent material properties for use in mass concrete thermal stress modeling . The results from the test methods described are used in a new concrete early -age cracking risk and durability software package called ConcreteWorks . en_US
dc.format.medium electronic en_US
dc.language.iso eng en_US
dc.rights Copyright © is held by the author . Presentation of this material on the Libraries' web site by University Libraries , The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works . en_US
dc.subject.lcsh Thermal stresses en_US
dc.subject.lcsh Concrete - -Thermal properties en_US
dc.title Early age concrete thermal stress measurement and modeling en_US
dc.description.department Civil , Architectural , and Environmental Engineering en_US
dc.identifier.recnum b68896566 en_US
dc.type.genre Thesis en_US
dc.type.material text en_US
thesis.degree.name Doctor of Philosophy en_US
thesis.degree.level Doctoral en_US
thesis.degree.discipline Civil Engineering en_US
thesis.degree.grantor The University of Texas at Austin en_US
thesis.degree.department Civil , Architectural , and Environmental Engineering en_US

Citation

Early age concrete thermal stress measurement and modeling. Doctoral dissertation, The University of Texas at Austin. Available electronically from http : / /hdl .handle .net /2152 /3281 .

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