Effects of graphene oxide aggregates on hydration degree, sorptivity, and tensile splitting strength of cement paste

被引：179

作者：

Li, Xiangyu ^{[1
]}

Lu, Zeyu ^{[2
]}

Chuah, Samuel ^{[3
]}

Li, Wengui ^{[4
]}

Liu, Yanming ^{[3
]}

Duan, Wen Hui ^{[3
]}

Li, Zongjin ^{[2
]}

机构：

[1] Taiyuan Univ Technol, Coll Architecture & Civil Engn, Taiyuan, Shanxi, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China

[3] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[4] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2017年 / 100卷

基金：

澳大利亚研究理事会;

关键词：

Graphene'oxide; Aggregates; Cement paste; Hydration; Sorptivity; Tensile strength; MECHANICAL-PROPERTIES; MICROSTRUCTURE; COMPOSITES; DISPERSION; NANOSHEETS; IMAGE;

D O I：

10.1016/j.compositesa.2017.05.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It has recently been found the graphene oxide (GO) aggregates form in cement paste due to the chemical cross-linking of calcium cations. Therefore, the effects of GO addition on the properties of cement based materials should be dependent on the properties of GO aggregates rather than GO nanosheets. In this study, GO aggregates were first characterized by particle size measurement. Then, the effects of GO aggregates on the degree of hydration, sorptivity, and tensile strength of cement paste were investigated. The aspect ratio of GO aggregates is much larger than that of the original GO nanosheets. Compared to plain cement paste, the increase of non-evaporable water content of the cement paste was found to be very limited, around 1.17% and 3.90% for cement pastes containing 0.02% and 0.04% by weight GO, respectively. The sorptivity of cement paste, especially the secondary sorptivity, was notably reduced for GO incorporated cement paste. The tensile strength was significantly improved by GO aggregates. Incorporation of 0.04% by weight GO increased the tensile strength by 67% compared to that of plain cement paste. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

共 35 条

[11]

Gao J., 2015, J ELECTRON MATER, P1

[12] Reinforcing Effects of Graphene Oxide on Portland Cement Paste [J].

Gong, Kai ;

Pan, Zhu ;

Korayem, Asghar H. ;

Qiu, Ling ;

Li, Dan ;

Collins, Frank ;

Wang, Chien Ming ;

Duan, Wen Hui .

JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2015, 27 (02)

[13] Aggregation and resuspension of graphene oxide in simulated natural surface aquatic environments [J].

Hua, Zulin ;

Tang, Zhiqiang ;

Bai, Xue ;

Zhang, Jianan ;

Yu, Lu ;

Cheng, Haomiao .

ENVIRONMENTAL POLLUTION, 2015, 205 :161-169

[14] Processable aqueous dispersions of graphene nanosheets [J].

Li, Dan ;

Mueller, Marc B. ;

Gilje, Scott ;

Kaner, Richard B. ;

Wallace, Gordon G. .

NATURE NANOTECHNOLOGY, 2008, 3 (02) :101-105

[15] Improvement of mechanical properties by incorporating graphene oxide into cement mortar [J].

Li, Xiangyu ;

Li, Chenyang ;

Liu, Yanming ;

Chen, Shu Jian ;

Wang, C. M. ;

Sanjayan, Jay G. ;

Duan, Wen Hui .

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, 2018, 25 (15-16) :1313-1322

[16] Effects of graphene oxide agglomerates on workability, hydration, microstructure and compressive strength of cement paste [J].

Li, Xiangyu ;

Liu, Yan Ming ;

Li, Wen Gui ;

Li, Chen Yang ;

Sanjayan, Jay G. ;

Duan, Wen Hui ;

Li, Zongjin .

CONSTRUCTION AND BUILDING MATERIALS, 2017, 145 :402-410

[17] Incorporation of graphene oxide and silica fume into cement paste: A study of dispersion and compressive strength [J].

Li, Xiangyu ;

Korayem, Asghar Habibnejad ;

Li, Chenyang ;

Liu, Yanming ;

He, Hongsen ;

Sanjayan, Jay G. ;

Duan, Wen Hui .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 123 :327-335

[18] Measuring the lateral size of liquid-exfoliated nanosheets with dynamic light scattering [J].

Lotya, Mustafa ;

Rakovich, Aliaksandra ;

Donegan, John F. ;

Coleman, Jonathan N. .

NANOTECHNOLOGY, 2013, 24 (26)

[19] Effect of GO nanosheets on shapes of cement hydration crystals and their formation process [J].

Lv, Shenghua ;

Liu, Jingjing ;

Sun, Ting ;

Ma, Yujuan ;

Zhou, Qingfang .

CONSTRUCTION AND BUILDING MATERIALS, 2014, 64 :231-239

[20] Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites [J].

Lv, Shenghua ;

Ma, Yujuan ;

Qiu, Chaochao ;

Sun, Ting ;

Liu, Jingjing ;

Zhou, Qingfang .

CONSTRUCTION AND BUILDING MATERIALS, 2013, 49 :121-127

← 1 2 3 4 →