Amelioration of crushed brick - lime composites using nano-additives

Theodoridou, M. ORCID: https://orcid.org/0000-0003-1469-101X, Charalambous, E., Maravelaki-Kalaitzaki, P. and Ioannou, I. 2016. Amelioration of crushed brick - lime composites using nano-additives. Cement and Concrete Composites 68 , pp. 77-87. 10.1016/j.cemconcomp.2016.02.009

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Abstract

Crushed brick is widely known as a pozzolanic additive for composite building materials. However, crushed brick - lime composites usually show high porosity, low compressive strength and slow reaction kinetics. In this paper, we present multidisciplinary research on the amelioration of crushed brick - lime composites, using nanosilica (SiO2) and nanotitania (TiO2) as additives at 3% w/w of binder. The results suggest that despite the dominant effect of the crushed brick, nanosilica significantly improves the early-age properties of the composites, while nanotitania potentially increases their resistance against salt crystallization. Supplementary FTIR, DTA/TG and SEM analyses confirm the better hydration and carbonation evolution of lime composites with crushed brick and nano-additives.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Schools > Engineering
Publisher:	Elsevier
ISSN:	0958-9465
Date of Acceptance:	10 February 2016
Last Modified:	26 Oct 2022 07:15
URI:	https://orca.cardiff.ac.uk/id/eprint/124388

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