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Type: Journal article
Title: Investigating the reinforcing mechanism and optimized dosage of pristine graphene for enhancing mechanical strengths of cementitious composites
Author: Ho, V.D.
Ng, C.-T.
Ozbakkaloglu, T.
Karunagaran, R.U.
Farivar, F.
Goodwin, A.
Guckin, C.M.
Ho, V.D.
Losic, D.
Citation: RSC Advances: an international journal to further the chemical sciences, 2020; 10(70):42777-42789
Publisher: Royal Society of Chemistry
Issue Date: 2020
ISSN: 2046-2069
Statement of
Van Dac Ho, Ching-Tai Ng, Togay Ozbakkaloglu, Ramesh U. Karunagaran, Farzaneh Farivar, Andy Goodwin, Craig McGuckin, Van Duong Ho and Dusan Losic
Abstract: The proposed reinforcing mechanism and optimized dosage of pristine graphene (PRG) for enhancing mechanical, physicochemical and microstructural properties of cementitious mortar composites are presented. Five concentrations of PRG and two particle sizes are explored in this study. The results confirmed that the strength of the mortars depends on the dosage of PRG. The PRG sizes have a significant influence on the enhancement rate of mechanical strengths of the mortars, whereas they do not have a significant influence on the optimized PRG dosage for mechanical strengths. The PRG dosage of 0.07% is identified as the optimized content of PRG for enhancing mechanical strengths. The reinforcing mechanism of PRG for cement-based composites is mostly attributed to adhesion friction forces between PRG sheets and cementitious gels, which highly depends on the surface area of PRG sheets. The larger surface area of PRG sheets has a larger friction area associated with cementitious gels suggested to be one of favorable parameters for enhancing mechanical strengths with graphene additives.
Rights: This journal is © The Royal Society of Chemistry 2020
DOI: 10.1039/D0RA07639B
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Appears in Collections:ARC Research Hub for Graphene Enabled Industry Transformation publications
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