Investigation of Performance Tests using Bio-derived/Chemical Additives

dc.contributor.author Williams, R.
dc.contributor.author Podolsky, Joseph
dc.contributor.author Buss, Ashley
dc.contributor.author Williams, R.
dc.contributor.author Cochran, Eric
dc.contributor.author Cochran, Eric
dc.contributor.department Civil, Construction and Environmental Engineering
dc.contributor.department Chemical and Biological Engineering
dc.date 2018-02-19T07:26:36.000
dc.date.accessioned 2020-06-30T01:11:28Z
dc.date.available 2020-06-30T01:11:28Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2015
dc.date.embargo 2018-01-12
dc.date.issued 2015-07-01
dc.description.abstract <p>An industry wide emphasis on sustainable asphalt practices has given rise to increasing use of warm mix asphalt technologies. WMA reduces both binder viscosity and mixing and compaction temperatures by 20-55°C during the asphalt mix production and laydown process. This research investigates several bio-derived WMA additives that act as chemical modifiers with surfactant properties. Two established additives derived from the forest products industry are studied as well as a WMA additive in development that is derived from corn. The WMA material responses are measured for binder testing and mixture testing. All binder testing with the additives was conducted using a Performance Grade (PG) 64-22 binder and the same binder was polymer modified with an SBS polymer to attain a PG 70-22 binder. Dynamic modulus testing on a State DOT approved 10 million ESAL mix design was performed to compare stiffness at a wide range of temperatures and frequencies. The newly developed, corn-derived IDB additive was successful in allowing asphalt to be compacted at a reduced temperature. All additives were added at the same dosage level. The IDB binder and mix test results were comparable to other commercially available WMA additives; however, no particular additive consistently produced the highest or lowest test results.</p>
dc.description.comments <p>This proceeding is published as Podolsky, J. H., A. Buss, R. C. Williams, and E. W. Cochran. "Investigation of performance tests using bio-derived/chemical additives." In Proceedings of the First International Conference on “Bio-Based Building Materials”, ICBBM-2-15, Proceedings PRO 99, eds. S. Amziane and M. Sonebi. Clermont-Ferrand, France. 2015. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ccee_conf/50/
dc.identifier.articleid 1050
dc.identifier.contextkey 11358102
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ccee_conf/50
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/13674
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_conf/50/0-WilliamsRC_PermGrant_InvestigationPerformance.pdf|||Sat Jan 15 00:41:16 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_conf/50/2015_Williams_InvestigationPerformance.pdf|||Sat Jan 15 00:41:17 UTC 2022
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Civil and Environmental Engineering
dc.subject.disciplines Transportation Engineering
dc.subject.keywords warm mix asphalt
dc.subject.keywords bio-derived
dc.title Investigation of Performance Tests using Bio-derived/Chemical Additives
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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