Moisture susceptibility of subgrade soils stabilized by lignin-based renewable energy coproduct

dc.contributor.author Kim, Sunghwan
dc.contributor.author Gopalakrishnan, Kasthurirangan
dc.contributor.author Ceylan, Halil
dc.contributor.author Ceylan, Halil
dc.contributor.department Civil, Construction and Environmental Engineering
dc.date 2018-02-15T17:51:36.000
dc.date.accessioned 2020-06-30T01:13:35Z
dc.date.available 2020-06-30T01:13:35Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2012
dc.date.embargo 2015-01-13
dc.date.issued 2012-01-01
dc.description.abstract <p>Sustainable use of biomass as a renewable source of energy can be an alternative solution to the cost of fossil-based energy and global warming. Production of biofuel from plant biomass results not only in bio-based energy, but also in coproducts containing lignin, modified lignin, and lignin derivatives. This paper discusses the moisture susceptibility of subgrade soil stabilized by bio-based energy coproducts containing lignin, with the aim of establishing a new application for bio-based energy coproducts in soil stabilization. An experimental test program was conducted to compare the moisture susceptibility of lignin coproduct-treated soils and traditional fly ash stabilizer-treated soil samples. Additive combinations were also evaluated. There were two types of laboratory tests for moisture susceptibility evaluation: (1) unconfined compression strength (UCS) tests after "dry" and "wet" conditioning, and (2) visual observation of soaked specimens. Results indicate that the biofuel coproducts have excellent resistance to moisture degradation for the Iowa Class 10 soil classified as CL by the Unified Soil Classification System and as A-6(8) by AASHTO. In particular, Coproduct A with higher lignin content is more effective in providing moisture resistance than Coproduct B with lower lignin content as well as conventional additive (Class C fly ash). Moisture resistance comparable to that of Coproduct A could be obtained through the use of additive combinations.</p>
dc.description.comments <p>This is a manuscript of an article from <em>Journal of Transportation Engineering</em> 138 (2012): 1283, doi: <a href="http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000097" target="_blank">10.1061/(ASCE)TE.1943-5436.0000097</a></p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ccee_pubs/53/
dc.identifier.articleid 1053
dc.identifier.contextkey 6524143
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ccee_pubs/53
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/13962
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_pubs/53/2012_CeylanH_MoistureSusceptibilitySubgrade_manuscript.pdf|||Sat Jan 15 00:49:57 UTC 2022
dc.source.uri 10.1061/(ASCE)TE.1943-5436.0000097
dc.subject.disciplines Civil Engineering
dc.subject.disciplines Environmental Engineering
dc.subject.keywords biofuel
dc.subject.keywords coproduct
dc.subject.keywords fly ash
dc.subject.keywords lignin
dc.subject.keywords moisutre
dc.subject.keywords pavement
dc.subject.keywords renewable energy
dc.subject.keywords soil stabilization
dc.subject.keywords sustainability
dc.title Moisture susceptibility of subgrade soils stabilized by lignin-based renewable energy coproduct
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 3cb73d77-de43-4880-939a-063f9cc6bdff
relation.isOrgUnitOfPublication 933e9c94-323c-4da9-9e8e-861692825f91
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