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Amelioration of crushed brick - lime composites using nano-additives

Theodoridou, M. / Charalambous, E. / Maravelaki-Kalaitzaki, P. / Ioannou, I.

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.

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Amelioration of crushed brick - lime composites using nano-additives

Theodoridou, M. / Charalambous, E. / Maravelaki-Kalaitzaki, P. / Ioannou, I.

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.

Amelioration of crushed brick - lime composites using nano-additives

Theodoridou, M. / Charalambous, E. / Maravelaki-Kalaitzaki, P. / Ioannou, I.

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.

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Titel:

Amelioration of crushed brick - lime composites using nano-additives

Beteiligte:

Theodoridou, M. (Autor:in) / Charalambous, E. (Autor:in) / Maravelaki-Kalaitzaki, P. (Autor:in) / Ioannou, I. (Autor:in)

Erschienen in:

Cement and Concrete Composites ; 68 ; 77-87

Erscheinungsdatum:

10.02.2016

Format / Umfang:

11 pages

ISSN:

DOI:

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

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Lime , Composites , Nanotitania , Nanosilica , Crushed brick , Salt crystallization

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