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dc.contributor.authorTeall, O.*
dc.contributor.authorPilegis, M.*
dc.contributor.authorDavies, R.*
dc.contributor.authorSweeney, John*
dc.contributor.authorJefferson, T.*
dc.contributor.authorLark, R.*
dc.contributor.authorGardner, D.*
dc.date.accessioned2018-06-26T13:31:49Z
dc.date.available2018-06-26T13:31:49Z
dc.date.issued2018-05-31
dc.identifier.citationTeall O, Pilegis M, Davies R et al (2018) A shape memory polymer concrete crack closure system activated by electrical current. Smart Materials and Structures. 27(7): 075016.en_US
dc.identifier.urihttp://hdl.handle.net/10454/16324
dc.descriptionYesen_US
dc.description.abstractThe presence of cracks has a negative impact on the durability of concrete by providing paths for corrosive materials to the embedded steel reinforcement. Cracks in concrete can be closed using shape memory polymers (SMP) which produce a compressive stress across the crack faces. This stress has been previously found to enhance the load recovery associated with autogenous selfhealing. This paper details the experiments undertaken to incorporate SMP tendons containing polyethylene terephthalate (PET) filaments into reinforced and unreinforced 500 × 100 × 100 mm structural concrete beam samples. These tendons are activated via an electrical supply using a nickelchrome resistance wire heating system. The set-up, methodology and results of restrained shrinkage stress and crack closure experiments are explained. Crack closure of up to 85% in unreinforced beams and 26%–39% in reinforced beams is measured using crack-mouth opening displacement, microscope and digital image correlation equipment. Conclusions are made as to the effectiveness of the system and its potential for application within industry.en_US
dc.description.sponsorshipEPSRC for their funding of the Materials for Life (M4L) project (EP/K026631/1) and Costain Group PLC for industrial sponsorship of the project and authoren_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1088/1361-665X/aac28aen_US
dc.rights© 2018 IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_US
dc.subjectShape memory polymeren_US
dc.subjectSelf-healing concreteen_US
dc.subjectDurabilityen_US
dc.subjectConcreteen_US
dc.titleA shape memory polymer concrete crack closure system activated by electrical currenten_US
dc.status.refereedYesen_US
dc.date.Accepted2018-05-04
dc.date.application2018-05-04
dc.typeArticleen_US
dc.type.versionPublished versionen_US
refterms.dateFOA2018-07-29T02:37:22Z


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