Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4918399 | Construction and Building Materials | 2017 | 9 Pages |
Abstract
In this study, the effects of graphene oxide (GO) agglomerates on the workability, hydration, microstructure, and compressive strength of cement paste were addressed. The workability of cement paste was reduced because of the presence of GO agglomerates, which entrap a large amount of water. The mini-slump diameter was reduced by 21% with the incorporation of 0.03% by weight GO in cement paste. Hydration of the cement paste was accelerated due to nucleation sites provided by GO agglomerates serving as seeding material in the cement paste. The incorporation of GO refined the pore structure of the cement paste. The incorporation of GO was found to have much greater impact on macropores than on large and small mesopores. At 28Â days, the incorporation of 0.04% by weight GO produced a 14% improvement in the compressive strength of cement paste. Below 0.03%, the incorporation of GO had no positive effects on compressive strength.
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Xiangyu Li, Yan Ming Liu, Wen Gui Li, Chen Yang Li, Jay G. Sanjayan, Wen Hui Duan, Zongjin Li,