Development of self-consolidating concrete for slip form paving

dc.contributor.author Lu, Gang
dc.contributor.department Civil, Construction, and Environmental Engineering
dc.date 2020-06-17T02:40:00.000
dc.date.accessioned 2020-06-30T08:13:39Z
dc.date.available 2020-06-30T08:13:39Z
dc.date.copyright Sat Jan 01 00:00:00 UTC 2005
dc.date.issued 2005-01-01
dc.description.abstract <p>"In this study, a new type of self-consolidating concrete for slip-form paving (SF SCC) was developed. Effects of materials and mix proportions on fresh concrete compact-ability, flow-ability, and shape stability were studied. Type I cement and class C and F fly ashes were used as cementitious materials. Air-entraining agent (AEA), viscosity modifying admixture (VMA), and superplasticizer were employed as admixtures. Normal river sand and limestone were utilized as aggregate. A total of 46 concrete mixes were studied, and non-rodding slump flow test, modified compaction factor test, IBB rheometer test, and ""green"" strength tests were performed for the concrete mixtures. In addition, a ""mini-paver"" was developed to simulate the field SF SCC paving in laboratory. The study has demonstrated that by engineering concrete materials and mix proportions, it is feasible to develop a new type of SCC for slip form paving application. Concrete mixtures having a compaction factor of approximate 1.0, slump of approximated 8"", and spread of approximated 12"" displayed not only to be able to self-compact but also to hold its shape right after placement. The test results also indicated that concrete compactibility increased but stability decreased with flow-ability. There was a nonlinear relationship between slump and spread for the concrete mixtures tested. The interception obtained from the IBB tests (similar to yield stress of the mixtures) had a good relationship with not only slump but also ""green"" strength of concrete."</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/19170/
dc.identifier.articleid 20169
dc.identifier.contextkey 18125203
dc.identifier.doi https://doi.org/10.31274/rtd-20200616-63
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/19170
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/73151
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/19170/Lu_ISU_2005_L83.pdf|||Fri Jan 14 21:53:06 UTC 2022
dc.subject.keywords Civil, construction, and environmental engineering
dc.subject.keywords Civil engineering (Civil engineering materials)
dc.subject.keywords Civil engineering materials
dc.title Development of self-consolidating concrete for slip form paving
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
thesis.degree.discipline Civil Engineering (Civil Engineering Materials)
thesis.degree.level thesis
thesis.degree.name Master of Science
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