Mechanistic service life prediction of rigid pavement joint sealant: a new laboratory testing technique

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dc.contributor.authorAbo-Qudais, Saad A.en
dc.contributor.committeechairAl-Qadi, Imadeddin L.en
dc.contributor.committeememberWeyers, Richard E.en
dc.contributor.committeememberWalker, Richard D.en
dc.contributor.committeememberWightman, James P.en
dc.contributor.committeememberWard, Thomas C.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T21:17:11Zen
dc.date.adate2007-08-03en
dc.date.available2014-03-14T21:17:11Zen
dc.date.issued1995-01-11en
dc.date.rdate2007-08-03en
dc.date.sdate2007-08-03en
dc.description.abstractA new method to evaluate the performance of sealants used in rigid pavement joints was developed. A special fixture, attached to a servo-hydraulic testing machine, was designed to transfer applied cyclic shear deflection to a sealant sandwiched between two 51 x 51 x 51 mm portland cement concrete (PCC) cubes at a constant horizontal deflection. The new testing method simulates field conditions where shear deflection is caused by vehicular loading, while horizontal deflection is caused by slabs contraction or expansion due to temperature variation. Two commercially available, a low modulus silicone (sealant A) and a polyurethane (sealant B), one-component sealant types were evaluated at different joint widths, number of freezing and thawing cycles, and horizontal deflections. Two types of aggregates were used in the PCC mixes to evaluate the effect of aggregate on sealant performance. A limited number of specimens were evaluated for sealant failure using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Dynamic Shear Rheometer (DSR) was used to estimate the viscoelastic properties of sealants.en
dc.description.degreePh. D.en
dc.format.extentxiii, 331 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-08032007-142139en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08032007-142139/en
dc.identifier.urihttp://hdl.handle.net/10919/39042en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1995.A267.pdfen
dc.relation.isformatofOCLC# 32883839en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectsealantsen
dc.subject.lccLD5655.V856 1995.A267en
dc.titleMechanistic service life prediction of rigid pavement joint sealant: a new laboratory testing techniqueen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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