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Prediction of Linear Viscoelastic Response of the Loss Shear Modulus of Polymer-Modified Binders

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dc.contributor.authorBryant, James William Jr.en
dc.contributor.committeechairAl-Qadi, Imadeddin L.en
dc.contributor.committeememberTriani, Tonien
dc.contributor.committeememberFlintsch, Gerardo W.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:33:27Zen
dc.date.adate1999-05-25en
dc.date.available2014-03-14T20:33:27Zen
dc.date.issued1999-03-19en
dc.date.rdate2012-04-27en
dc.date.sdate1999-04-14en
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
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-041499-233023en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-041499-233023/en
dc.identifier.urihttp://hdl.handle.net/10919/31719en
dc.publisherVirginia Techen
dc.relation.haspart1ETD.PDFen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectpolymer modified asphalten
dc.subjectviscoelasticityen
dc.subjectshear modulusen
dc.titlePrediction of Linear Viscoelastic Response of the Loss Shear Modulus of Polymer-Modified Bindersen
dc.typeThesisen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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