▎ 摘　　要

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 inmigration of chloride from the outside.