Development of high shrinkage Polyethylene Terephthalate (PET) shape memory polymer tendons for concrete crack closure
View/ Open
Sweeney_Smart_Materials_and_Structures.pdf (1.103Mb)
Download
Publication date
2017-02-24Author
Teall, O.R.Pilegis, M.
Sweeney, John
Gough, Tim

Thompson, Glen P.
Jefferson, A.
Lark, R.
Gardner, D.
Keyword
Shape memory polymers; Concrete cracks; Polyethylene Terephthalate (PET); Restrained shrinkageRights
© 2017 IOP Publishing Ltd. Reproduced in accordance with the publisher's self-archiving policy. This Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence.Peer-Reviewed
YesAccepted for publication
2017-02-01
Metadata
Show full item recordAbstract
The shrinkage force exerted by restrained shape memory polymers can potentially be used to close cracks in structural concrete. This paper describes the physical processing and experimental work undertaken to develop high shrinkage die-drawn Polyethylene Terephthalate (PET) shape memory polymer tendons for use within a crack closure system. The extrusion and die-drawing procedure used to manufacture a series of PET tendon samples is described. The results from a set of restrained shrinkage tests, undertaken at differing activation temperatures, are also presented along with the mechanical properties of the most promising samples. The stress developed within the tendons is found to be related to the activation temperature, the cross-sectional area and to the draw rate used during manufacture. Comparisons with commercially-available PET strip samples used in previous research are made, demonstrating an increase in restrained shrinkage stress by a factor of two for manufactured PET filament samples.Version
Accepted ManuscriptCitation
Teall OR, Pilegis M, Sweeney J et al (2017) Development of high shrinkage Polyethylene Terephthalate (PET) shape memory polymer tendons for concrete crack closure. Smart Materials and Structures. 26(4): 045006.Link to Version of Record
https://doi.org/10.1088/1361-665X/aa5d66Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1088/1361-665X/aa5d66