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Issue 122, 2015
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Mechanism of cement paste reinforced by graphene oxide/carbon nanotubes composites with enhanced mechanical properties

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Abstract

This study presents the enhanced mechanical properties of cement paste reinforced by graphene oxide (GO)/carbon nanotubes (CNTs) composites. The UV-vis spectroscopy and optical microscopy results show that the dispersion of CNTs in the GO solution is much better than in an aqueous solution due to the higher electrostatic repulsion, which allows a completely new approach of dispersing CNTs rather than by incorporating a dispersant. More importantly, the GO/CNTs composite plays an important role in improving the compressive and flexural strength of cement paste by 21.13% and 24.21%, which is much higher than cement paste reinforced by CNTs (6.40% and 10.14%) or GO (11.05% and 16.20%). The improved mechanical properties of cement paste are attributed to better dispersed CNTs and enhanced interactions among CNTs by the GO incorporation. Finally, the space interlocking mechanism of the GO/CNTs/cement paste composite with enhanced mechanical properties is proposed.

Graphical abstract: Mechanism of cement paste reinforced by graphene oxide/carbon nanotubes composites with enhanced mechanical properties

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Article information


Submitted
11 Sep 2015
Accepted
03 Nov 2015
First published
09 Nov 2015

RSC Adv., 2015,5, 100598-100605
Article type
Paper
Author version available

Mechanism of cement paste reinforced by graphene oxide/carbon nanotubes composites with enhanced mechanical properties

Z. Lu, D. Hou, L. Meng, G. Sun, C. Lu and Z. Li, RSC Adv., 2015, 5, 100598
DOI: 10.1039/C5RA18602A

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