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Amelioration of crushed brick - lime composites using nano-additives

Lookup NU author(s): Dr Magdalini TheodoridouORCiD

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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.

Publication metadata

Author(s): Theodoridou M, Charalambous E, Maravelaki-Kalaitzaki P, Ioannou I

Publication type: Article

Publication status: Published

Journal: Cement and Concrete Composites

Year: 2016

Volume: 68

Pages: 77-87

Print publication date: 01/04/2016

Online publication date: 13/02/2016

Acceptance date: 10/02/2016

ISSN (print): 0958-9465

ISSN (electronic): 0958-9465

Publisher: Elsevier

URL: https://doi.org/10.1016/j.cemconcomp.2016.02.009

DOI: 10.1016/j.cemconcomp.2016.02.009

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