Effect of Graphene and Graphene Oxide on Hydration Process and Strength of Cement-based Materials

被引：0

作者：

Dong J. ^{[1
]}

Zou M. ^{[1
]}

Zhou M. ^{[2
,3
]}

Yu L. ^{[1
]}

Cao J. ^{[1
]}

Zhuang J. ^{[1
]}

Wang L. ^{[1
]}

Wang H. ^{[1
]}

机构：

[1] School of Civil Engineering and Architecture, Guangxi University of Science and Technology, Guangxi, Liuzhou

[2] School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Guangxi, Liuzhou

[3] Guangxi Qinglu New Material Technology Co., Ltd., Guangxi, Liuzhou

来源：

Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 24期

基金：

中国国家自然科学基金;

关键词：

cement based materials; graphene; graphene oxide; hydration process; strength;

D O I：

10.11896/cldb.21060032

中图分类号：

学科分类号：

摘要：

In this work, peeling graphene (pG) prepared by intercalation stripping method and Hummers graphene oxide (hGO) prepared by Hummers method were prepared into nano sheet dispersion by ultrasonic dispersion method. The effects of two kinds of dispersions on setting time, microstructure of hydration products, crystalline phase and strength of cement-based materials were studied. The results show that the mixing of two nano dispersions can shorten the setting time reduce the pores in the cement paste, and densify the structure, and some CH crystal present a multi-faceted aggregation structure state that diverges from a single point. The addition of pG and hGO can accelerate the hydration reaction of cement, do not change the types of hydration products, and can improve the mechanical properties of cement-based materials, especially the 3 d flexural strength. The strength of cement sample with pG is slightly higher than that of hGO, which provides a broad prospect for the application of low-cost, size-controllable and mass-produced graphene products in cement-based materials. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

共 19 条

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