Jefferson, Anthony Duncan  ORCID: https://orcid.org/0000-0002-2050-2521, Joseph, C., Lark, Robert John ORCID: https://orcid.org/0000-0002-1796-5321, Isaacs, B., Dunn, S. C. and Weager, B.
2010.
A new system for crack closure in cementitious materials using shrinkable polymers.
Cement and Concrete Research
40
(5)
, pp. 795-801.
10.1016/j.cemconres.2010.01.004
|
Abstract
This paper presents details of an original crack-closure system for cementitious materials using shrinkable polymer tendons. The system involves the incorporation of unbonded pre-oriented polymer tendons in cementitious beams. Crack closure is achieved by thermally activating the shrinkage mechanism of the restrained polymer tendons after the cement-based material has undergone initial curing. The feasibility of the system is demonstrated in a series of small scale experiments on pre-cracked prismatic mortar specimens. The results from these tests show that, upon activation, the polymer tendon completely closes the preformed macro-cracks and imparts a significant stress across the crack faces. The potential of the system to enhance the natural autogenous crack healing process and generally improve the durability of concrete structures is addressed.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction |
| Uncontrolled Keywords: | Long-term performance; Durability; Shape Memory Polymer; Crack–healing |
| Publisher: | Elsevier |
| ISSN: | 1873-3948 |
| Last Modified: | 17 Oct 2022 10:31 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/8266 |
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