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dc.contributor.authorSivanendran, S
dc.contributor.authorLees, JM
dc.date.accessioned2015-09-30T09:15:41Z
dc.date.available2015-09-30T09:15:41Z
dc.date.issued2015-12-16
dc.identifier.citationProceedings of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & The 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) Joint Conference
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/251229
dc.description.abstractCFRP tendons are a potential alternative to steel reinforcement for pre-stressed concrete. This paper discusses particular characteristics pertaining to the behavior of CFRP when exposed to a combination of moisture and stress, conditions typical to that of pre-stressed reinforcement. Previous studies showed that the imposition of stresses on fibre-reinforced polymer strips and plates caused a change in their moisture-uptake behaviour. This is believed to be caused by a change in free volume, with compressive stresses reducing the free volume in the polymer, and tensile stresses increasing the free volume. Micro-cracking within the epoxy matrix and at the fibre-matrix interface could also increase moisture absorption. Therefore, it is hypothesised that the combination of stress and moisture exposure would accelerate any degradation of CFRP tendons. It is important to validate and quantify this degradation, particularly in the case of pre-stressed concrete where the tendons are typically stressed to 60% of their ultimate tensile strength. A series of experiments have been undertaken where flexural stresses are imposed on CFRP tendons immersed in water. The tendons are stressed to a maximum strain of 0%, 20%, 40%, 53% and 74% of the average fracture strain. The results will then be used as the basis for the prediction of uptake rates in tendons subjected to axial tensile stresses and to model the long term interaction between pre-stressed CFRP tendons and concrete.
dc.languageEnglish
dc.language.isoen
dc.subjectComposites
dc.subjectCarbon fibre reinforced polymer
dc.subjectMoisture uptake
dc.subjectStress
dc.subjectDurability
dc.titleDurability of CFRP pre-stressed concrete subjected to stress and moisture exposure
dc.typeConference Object
dc.description.versionThis is the accepted manuscript. It is currently embargoed pending publication.
prism.publicationDate2015
prism.publicationNameFRPRCS-12/APFIS-2015 - Joint Conference of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures, FRPRCS 2015 and the 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures, APFIS 2015
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2015-12-16
dc.contributor.orcidLees, Janet [0000-0002-8295-8321]
rioxxterms.typeConference Paper/Proceeding/Abstract
cam.orpheus.successThu Nov 05 11:57:08 GMT 2020 - Embargo updated
rioxxterms.freetoread.startdate2099-01-01


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