A crack closure system for cementitious composite materials using knotted shape memory polymer (k-SMP) fibres
dc.contributor.author | Maddalena, R. | |
dc.contributor.author | Bonanno, L. | |
dc.contributor.author | Balzano, B. | |
dc.contributor.author | Tuinea-Bobe, Cristina-Luminita | |
dc.contributor.author | Sweeney, John | |
dc.contributor.author | Mihai, I. | |
dc.date.accessioned | 2020-10-20T17:24:52Z | |
dc.date.available | 2020-10-20T17:24:52Z | |
dc.date.issued | 2020-11 | |
dc.identifier.citation | Maddalena 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.uri | http://hdl.handle.net/10454/18127 | |
dc.description | Yes | en_US |
dc.description.abstract | Formation 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.sponsorship | This work is supported by UKRI-EPSRC (Grant No. EP/P02081X/1, Resilient Materials 4 Life, RM4L). | en_US |
dc.language.iso | en | en_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.subject | Shape memory polymer | en_US |
dc.subject | Concrete | en_US |
dc.subject | Crack closure | en_US |
dc.subject | Self-healing | en_US |
dc.subject | k-SM | en_US |
dc.title | A crack closure system for cementitious composite materials using knotted shape memory polymer (k-SMP) fibres | en_US |
dc.status.refereed | Yes | en_US |
dc.date.application | 2020-09-06 | |
dc.type | Article | en_US |
dc.type.version | Published version | en_US |
dc.identifier.doi | https://doi.org/10.1016/j.cemconcomp.2020.103757 | |
refterms.dateFOA | 2020-10-20T17:25:41Z | |
dc.date.accepted | 2020-07-20 |