dc.contributor.author | Alghamri, R. | |
dc.contributor.author | Kanellopoulos, A. | |
dc.contributor.author | Al-Tabbaa, A. | |
dc.date.accessioned | 2018-03-02T12:28:52Z | |
dc.date.available | 2018-03-02T12:28:52Z | |
dc.date.issued | 2016-10-15 | |
dc.identifier.citation | Alghamri , R , Kanellopoulos , A & Al-Tabbaa , A 2016 , ' Impregnation and encapsulation of lightweight aggregates for self-healing concrete ' , Construction and Building Materials , vol. 124 , pp. 910-921 . https://doi.org/10.1016/j.conbuildmat.2016.07.143 | |
dc.identifier.issn | 0950-0618 | |
dc.identifier.other | ORCID: /0000-0001-9278-2035/work/62751281 | |
dc.identifier.uri | http://hdl.handle.net/2299/19852 | |
dc.description | © 2016 The Author(s). This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence CC BY 4.0 (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. | |
dc.description.abstract | This study investigated a technique of impregnating potential self-healing agents into lightweight aggregates (LWA) and the self-healing performance of concrete mixed with the impregnated LWA. Lightweight aggregates with a diameter range of 4–8 mm were impregnated with a sodium silicate solution as a potential self-healing agent. Concrete specimens containing the impregnated LWA and control specimens were pre-cracked up to 300 μm crack width at 7 days. Flexural strength recovery and reduction in water sorptivity were examined. After 28 days healing in water, the specimens containing the impregnated LWA showed ∼80% recovery of the pre-cracking strength, which accounts more than five times of the control specimens’ recovery. The capillary water absorption was also significantly improved; the specimens healed with the impregnated LWA showed a 50% reduction in the sorptivity index compared with the control cracked specimens and a very similar response to the control uncracked specimens. The contribution of sodium silicate in producing more calcium silicate hydrate gel was confirmed by characterisation the healing products using X-ray diffraction, Fourier transform spectroscopy, and scanning electron microscopy. | en |
dc.format.extent | 12 | |
dc.format.extent | 3214563 | |
dc.language.iso | eng | |
dc.relation.ispartof | Construction and Building Materials | |
dc.subject | Impregnation | |
dc.subject | Lightweight aggregate | |
dc.subject | Self-healing concrete | |
dc.subject | Sodium silicate | |
dc.subject | Civil and Structural Engineering | |
dc.subject | Building and Construction | |
dc.subject | General Materials Science | |
dc.title | Impregnation and encapsulation of lightweight aggregates for self-healing concrete | en |
dc.contributor.institution | Materials and Structures | |
dc.contributor.institution | Centre for Climate Change Research (C3R) | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Engineering and Technology | |
dc.contributor.institution | Centre for Engineering Research | |
dc.contributor.institution | Centre for Future Societies Research | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=84981180068&partnerID=8YFLogxK | |
rioxxterms.versionofrecord | 10.1016/j.conbuildmat.2016.07.143 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |