Investigation of blending parameters using soybean derived additives in polymer modified asphalt

dc.contributor.author Staver, Maxwell
dc.contributor.department Chemical and Biological Engineering
dc.contributor.majorProfessor Eric W. Cochran
dc.date 2021-09-01T04:45:36.000
dc.date.accessioned 2021-09-09T16:54:24Z
dc.date.available 2021-09-09T16:54:24Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2021
dc.date.embargo 2021-07-27
dc.date.issued 2021-01-01
dc.description.abstract <p>The state of the roadways within the United States is rapidly declining as maintenance and replacement costs remain high. The use of high quality modified asphalts will extend the service life and reduce the need for frequent maintenance. The use of rejuvenators in asphalt reduces the stiffness allowing for higher content of recycled asphalt materials. This provides both an increase in the sustainability of pavements as well as a decrease in the cost of creating new asphalt mixtures. Asphalt can also be modified by elastomeric polymers increasing the stiffness and elasticity leading to an improved high temperature and fatigue performance.</p> <p>The research provided herein describes a novel soybean derived biopolymer and rejuvenator used to modify asphalt binder. The use of both the biopolymer and rejuvenator in a polymer modified asphalt along with sulfur leads to an increase in the high temperature performance, elasticity, and low temperature performance. Using statistical modelling, it was determined that the order of additions, with certain restrictions, has a negligible effect on the rheological properties of the asphalt. The duration of blending was also investigated to determine the effect on the elastic performance using rheology and fluorescence microscopy. It was observed that initially the blend without the biopolymer had higher elastic performance at short blending duration, but was overtaken by the blend containing the biopolymer at long blend durations leading to superior performance.</p>
dc.format.mimetype PDF
dc.identifier archive/lib.dr.iastate.edu/creativecomponents/888/
dc.identifier.articleid 1965
dc.identifier.contextkey 24043499
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath creativecomponents/888
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/GvqXJY7w
dc.source.bitstream archive/lib.dr.iastate.edu/creativecomponents/888/MEng_CH_E_Max_Staver.pdf|||Sat Jan 15 02:18:11 UTC 2022
dc.subject.disciplines Civil Engineering
dc.subject.disciplines Polymer and Organic Materials
dc.subject.disciplines Polymer Science
dc.subject.keywords Polymer modified asphalt
dc.subject.keywords Soybean oil
dc.subject.keywords Biopolymer
dc.subject.keywords Rheology
dc.subject.keywords Factor Screening
dc.subject.keywords Fluorescence Microscopy
dc.title Investigation of blending parameters using soybean derived additives in polymer modified asphalt
dc.type article
dc.type.genre creativecomponent
dspace.entity.type Publication
relation.isOrgUnitOfPublication 86545861-382c-4c15-8c52-eb8e9afe6b75
thesis.degree.discipline Chemical Engineering
thesis.degree.level creativecomponent
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