Journal Published Online: 04 December 2020
Volume 49, Issue 3

The Effect of Graphene Nanoplatelets on Chloride Binding and Chloride Migration in Cement Paste

CODEN: JTEVAB

Abstract

This paper aims to study the influence of graphene nanoplatelets (GNPs) on chloride binding and chloride migration in cement paste. GNPs were dispersed in cement paste in the form of a GNP solution with the help of gum Arabic powder as a dispersant. The microstructure of cement-based materials was investigated via field-emission scanning electron microscopy (FE-SEM). FE-SEM analysis indicated that GNPs can improve the compactness of the cement paste through its filling effect, bridging, and network effects. Adding 0.10 % GNP content improved the chloride binding by 32 % and reduced chloride migration by 45 %. The addition of GNPs can not only improve chloride binding within cement paste, it can also impede the in-migration of chloride from the outside.

Author Information

Zhao, Ruying
Institute of Building Materials, Guangzhou Institute of Building Science Co., Ltd., Guangzhou, China
Zhu, Wen
Institute of Building Materials, Guangzhou Institute of Building Science Co., Ltd., Guangzhou, China
Zhang, Shuo
Institute of Building Materials, Guangzhou Institute of Building Science Co., Ltd., Guangzhou, China School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Pages: 11
Price: $25.00
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Details
Stock #: JTE20200198
ISSN: 0090-3973
DOI: 10.1520/JTE20200198