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dc.contributor.authorDhawale, Ajay Prasad
dc.date.accessioned2018-10-03T19:27:47Z
dc.date.available2018-10-03T19:27:47Z
dc.date.issued2017-12-30
dc.identifier.otherDhawale_cornell_0058O_10220
dc.identifier.otherhttp://dissertations.umi.com/cornell:10220
dc.identifier.otherbibid: 10474204
dc.identifier.urihttps://hdl.handle.net/1813/59101
dc.description.abstractBitumen is most commonly used as a binder in road pavement construction. Due to the harsh climate changes and heavier traffic loads, bitumen tends to undergo rutting and cracking which severely limits its service life and durability. Bitumen-based binders containing various proportions of styrene-butadiene-styrene (SBS) triblock copolymer, crumb rubber (CR) and fumed nanosilica have been synthesized. The modified binders have been studied for rheological properties, storage stability, nanoparticle dispersion, and thermal resistance. In addition, binder-sand composites have been prepared in a binder/sand weight ratio of 1:9 and have been tested for three-point flexural bend tests. Addition of nanosilica dramatically improves the rheological properties of bitumen with enhancements as great as 400% and the compatibility between bitumen and polymers is enhanced. In addition, CR-modified bitumen demonstrates a similar level of performance as SBS-modified bitumen, when both are used synergistically with nanosilica, which leads to beneficial environmental and economic impacts. Finally, the interfacial mechanisms between bitumen, polymers and nanosilica that are responsible for modification of bitumen using Fourier-Transform Infrared (FTIR) Spectroscopy and Dynamic Mechanical Analysis (DMA) were investigated and correlated with the performance of the materials.
dc.language.isoen_US
dc.subjectMaterials Science
dc.subjectbitumen
dc.subjectcrumb rubber (CR)
dc.subjectinterfacial mechanisms
dc.subjectnanosilica
dc.subjectstorage stability
dc.subjectstyrene-butadiene-styrene (SBS)
dc.titlePOLYMER-NANOPARTICLE-MODIFICATION OF BITUMEN USING STYRENE-BUTADIENE-STYRENE (SBS) TRIBLOCK COPOLYMER, CRUMB RUBBER (CR) AND FUMED NANOSILICA.
dc.typedissertation or thesis
thesis.degree.disciplineMaterials Science and Engineering
thesis.degree.grantorCornell University
thesis.degree.levelMaster of Science
thesis.degree.nameM.S., Materials Science and Engineering
dc.contributor.chairGiannelis, Emmanuel P.
dc.contributor.committeeMemberOber, Christopher Kemper
dcterms.licensehttps://hdl.handle.net/1813/59810
dc.identifier.doihttps://doi.org/10.7298/X4KW5D7H


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