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Mechanical and micro-structural study of cement mortar with graphene oxide

Mechanical and micro-structural study of cement mortar with graphene oxide The mechanical and micro-structure properties of cement sand mortar with and without graphene oxide (GO) was studied experimentally. Graphene oxide is a carbon based 2-D nano material which still needs detail investigation of its effect in cement mortar/concrete. In the present study, different proportions of GO, 0.03–0.06% by weight of cement, were incorporated into cement mortar. The measured fluidity was reduced by 23% with incorporation of 0.03% GO by weight of cement. The incorporation of 0.05% GO increased the compressive strength of mortar at 28 days by 20%. Similarly, the flexural strength of GO based mortar was also increased substantially compared to control mortar at 0.05% of GO addition. It was observed that rate of water absorption is reduced by GO addition into cement mortar. The addition of GO reduces the pore volume and refines the pore structure of cement mortar. These improvements in GO based mortar are mainly due to the formation of new hydration products as observed by FESEM analysis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Mechanical and micro-structural study of cement mortar with graphene oxide

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References (66)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00232-8
Publisher site
See Article on Publisher Site

Abstract

The mechanical and micro-structure properties of cement sand mortar with and without graphene oxide (GO) was studied experimentally. Graphene oxide is a carbon based 2-D nano material which still needs detail investigation of its effect in cement mortar/concrete. In the present study, different proportions of GO, 0.03–0.06% by weight of cement, were incorporated into cement mortar. The measured fluidity was reduced by 23% with incorporation of 0.03% GO by weight of cement. The incorporation of 0.05% GO increased the compressive strength of mortar at 28 days by 20%. Similarly, the flexural strength of GO based mortar was also increased substantially compared to control mortar at 0.05% of GO addition. It was observed that rate of water absorption is reduced by GO addition into cement mortar. The addition of GO reduces the pore volume and refines the pore structure of cement mortar. These improvements in GO based mortar are mainly due to the formation of new hydration products as observed by FESEM analysis.

Journal

Journal of Building Pathology and RehabilitationSpringer Journals

Published: Dec 1, 2022

Keywords: Graphene oxide; Mortar; Compressive strength; Flexural strength; Microstructure

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