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dc.contributor.authorBryant, Jr., James Williamen_US
dc.date.accessioned2014-03-14T20:33:27Z
dc.date.available2014-03-14T20:33:27Z
dc.date.issued1999-03-19en_US
dc.identifier.otheretd-041499-233023en_US
dc.identifier.urihttp://hdl.handle.net/10919/31719
dc.description.abstractCurrent mathematical models, developed on straight asphalt binders, are inadequate to characterize the frequency dependence of response of polymer-modified asphalt binders. In an earlier study at Virginia Tech, mathematical models were developed to predict the storage and loss shear moduli of polymer-modified binders. However the model developed for the loss shear moduli is limited at high frequency (G" less than or equal to 10^7.5 Pa). This thesis presents a statistical modeling of loss shear modulus of polymer (random copolymers and thermoplastic block copolymers) modified binder. Data from dynamic mechanical analysis on modified binders, at temperatures between 5 and 75°C and frequencies ranging from 0.06 to 0188.5 rad/s, were reduced to dynamic master curves of moduli, and used to develop the model. Twenty-one polymer-binder blends prepared and tested earlier at Virginia Tech where included in the study. Realistic characterization of loss shear moduli values was obtained using the Gompertz statistical model. The model was validated by using mean square error of prediction (MSEP) in which a second set of frequency data was input in the model to obtain the moduli values, which were compared to the measured data of the second set. Although this model was successfully tested for shear loss modulus prediction of polymer-modified binders, caution should be exercised when it is applied, as such a model should be able to predict the storage modulus for a known phase angle.en_US
dc.publisherVirginia Techen_US
dc.relation.haspart1ETD.PDFen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectpolymer modified asphalten_US
dc.subjectviscoelasticityen_US
dc.subjectshear modulusen_US
dc.titlePrediction of Linear Viscoelastic Response of the Loss Shear Modulus of Polymer-Modified Bindersen_US
dc.typeThesisen_US
dc.contributor.departmentCivil Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineCivil Engineeringen_US
dc.contributor.committeechairAl-Qadi, Imadeddin L.en_US
dc.contributor.committeememberTriani, Tonien_US
dc.contributor.committeememberFlintsch, Gerardo W.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-041499-233023/en_US
dc.date.sdate1999-04-14en_US
dc.date.rdate2012-04-27
dc.date.adate1999-05-25en_US


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