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Experimental study on long-term behavior of PSC beams

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cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0001-9365-5310
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentIndian Institute of Technology, Madras
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid0fef592c-f273-4bc3-8e72-2ef146796535
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.department0fef592c-f273-4bc3-8e72-2ef146796535
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.contributor.authorMary Williams, P.
dc.contributor.authorDevdas Menon
dc.contributor.authorMeher Prasad, A.
dc.date.accessioned2023-09-19T13:16:10Z
dc.date.available2023-09-19T13:16:10Z
dc.date.issued01-05-2023
dc.description.abstractThe present study reports the experimental investigations of the long-term strains in two PSC beams, one bonded and one unbonded, having the same cross-section and concrete mix, subject to the same prestress and environmental conditions. In addition, control specimens in the form of one unloaded prism specimen of the same cross-section, and two standard cylinders, one loaded axially and the other unloaded, were also monitored for the same time duration of 250 days. Electrical strain gauges and fiber optic sensors were used for strain measurement, and the results show that they agree well with each other. The ACI 209 model is found to have the least error in the prediction of axially loaded cylinder creep and shrinkage strains. However, all the prediction models (assuming constant stress) are found, in general, to overestimate the creep and shrinkage strains, and the overall loss in prestress in the two PSC beams. When the loss in prestress is incorporated, using a 3D finite element numerical model, the prediction is found to improve significantly in all the models, and particularly in the case of the GL 2000 and MC2010 models. Alternatively, improved predictions can be obtained by using the compliance from cylinder creep data and the shrinkage strains from a control specimen (having the same volume-to-surface ratio) for predicting the strains in PSC beams; this is found to yield good results.
dc.identifier.doi10.1016/j.istruc.2023.03.080
dc.identifier.scopus2-s2.0-85150465358
dc.identifier.urihttps://apicris.irins.org/handle/IITM2023/15435
dc.relation.ispartofseriesStructures
dc.sourceStructures
dc.subjectCreep
dc.subjectFlexure
dc.subjectLong-term strains
dc.subjectPrestressed concrete
dc.subjectShrinkage
dc.titleExperimental study on long-term behavior of PSC beams
dc.typeJournal
dspace.entity.typePublication
oaire.citation.endPage572
oaire.citation.startPage560
oaire.citation.volume51
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliationIndian Institute of Technology, Madras
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
person.affiliation.cityChennai
person.affiliation.id60025757
person.affiliation.nameIndian Institute of Technology Madras
person.identifier.scopus-author-id57190126782
person.identifier.scopus-author-id7101687204
person.identifier.scopus-author-id57817484600
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