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dc.contributor.authorMaddalena, R.
dc.contributor.authorBonanno, L.
dc.contributor.authorBalzano, B.
dc.contributor.authorTuinea-Bobe, Cristina-Luminita
dc.contributor.authorSweeney, John
dc.contributor.authorMihai, I.
dc.date.accessioned2020-10-20T17:24:52Z
dc.date.available2020-10-20T17:24:52Z
dc.date.issued2020-11
dc.identifier.citationMaddalena R, Bonanno L, Balzano B et al (2020) A crack closure system for cementitious composite materials using knotted shape memory polymer (k-SMP) fibres. Cement and Concrete Composites. 114: 103757.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18127
dc.descriptionYesen_US
dc.description.abstractFormation of cracks represents one of the major causes of concrete deterioration, which can lead to durability and safety issues. In this work, a novel crack closure system is developed, using polyethylene terephthalate (PET) polymer fibres embedded in a mortar mix. The PET polymer has shape memory properties and shrinks upon thermal activation, if free to do so, or otherwise exerts shrinkage restraint forces. A single knot was manufactured at each end of the PET fibres to provide mechanical anchorage into the mortar matrix. Mortar samples with embedded knotted fibres were pre-cracked and subsequently placed in an oven to thermally activate the polymers and induce the shrinkage mechanism into the fibres. Crack closure was measured in the range 45–100%, depending on the geometry, dimension and distribution of the fibres, and the size of the initial crack.en_US
dc.description.sponsorshipThis work is supported by UKRI-EPSRC (Grant No. EP/P02081X/1, Resilient Materials 4 Life, RM4L).en_US
dc.language.isoenen_US
dc.rights© 2020 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en_US
dc.subjectShape memory polymeren_US
dc.subjectConcreteen_US
dc.subjectCrack closureen_US
dc.subjectSelf-healingen_US
dc.subjectk-SMen_US
dc.titleA crack closure system for cementitious composite materials using knotted shape memory polymer (k-SMP) fibresen_US
dc.status.refereedYesen_US
dc.date.Accepted2020-07-20
dc.date.application2020-09-06
dc.typeArticleen_US
dc.type.versionPublished versionen_US
dc.identifier.doihttps://doi.org/10.1016/j.cemconcomp.2020.103757
refterms.dateFOA2020-10-20T17:25:41Z


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