Effects of graphene oxide agglomerates on workability, hydration, microstructure and compressive strength of cement paste

被引：298
作者：
Li, Xiangyu [1 ]
Liu, Yan Ming [2 ]
Li, Wen Gui [2 ]
Li, Chen Yang [2 ]
Sanjayan, Jay G. [3 ]
Duan, Wen Hui [2 ]
Li, Zongjin [4 ]
机构：
[1] Taiyuan Univ Technol, Coll Architecture & Civil Engn, Taiyuan, Peoples R China
[2] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia
[3] Swinbume Univ Technol, Ctr Sustainable Infrastruct, Fac Sci Engn & Technol, Hawthorn, Vic 3122, Australia
[4] Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 145卷
基金：
澳大利亚研究理事会;
关键词：
Graphene oxide; Cement paste; Agglomerates; Hydration; Microstructure; Mechanical properties; CARBON NANOTUBE; MECHANICAL-PROPERTIES; REINFORCED CEMENT; PORE STRUCTURE; SILICA; COMPOSITES; POROSIMETRY; ADMIXTURES; DISPERSION; NANOSHEETS;
D O I：
10.1016/j.conbuildmat.2017.04.058
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
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 28 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. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：402 / 410
页数：9
相关论文
共 46 条
[1]   High strength measurement of monolayer graphene oxide [J].
Cao, Changhong ;
Daly, Matthew ;
Singh, Chandra Veer ;
Sun, Yu ;
Filleter, Tobin .
CARBON, 2015, 81 :497-504
[2]   Graphene Oxide: Preparation, Functionalization, and Electrochemical Applications [J].
Chen, Da ;
Feng, Hongbin ;
Li, Jinghong .
CHEMICAL REVIEWS, 2012, 112 (11) :6027-6053
[3]   Influence of water-to-cement ratio and curing period on pore structure of cement mortar [J].
Chen, Xudong ;
Wu, Shenxin .
CONSTRUCTION AND BUILDING MATERIALS, 2013, 38 :804-812
[4]   Impact of admixtures on the hydration kinetics of Portland cement [J].
Cheung, J. ;
Jeknavorian, A. ;
Roberts, L. ;
Silva, D. .
CEMENT AND CONCRETE RESEARCH, 2011, 41 (12) :1289-1309
[5]   Nano reinforced cement and concrete composites and new perspective from graphene oxide [J].
Chuah, Samuel ;
Pan, Zhu ;
Sanjayan, Jay G. ;
Wang, Chien Ming ;
Duan, Wen Hui .
CONSTRUCTION AND BUILDING MATERIALS, 2014, 73 :113-124
[6]   The influences of admixtures on the dispersion, workability, and strength of carbon nanotube-OPC paste mixtures [J].
Collins, Frank ;
Lambert, John ;
Duan, Wen Hui .
CEMENT & CONCRETE COMPOSITES, 2012, 34 (02) :201-207
[7]   SEW/AFM studies of cementitious binder modified by MWCNT and nano-sized Fe needles [J].
Cwirzen, A. ;
Habermehl-Cwirzen, K. ;
Nasibulin, A. G. ;
Kaupinen, E. I. ;
Mudimela, P. R. ;
Penttala, V. .
MATERIALS CHARACTERIZATION, 2009, 60 (07) :735-740
[8]   Mercury porosimetry - An inappropriate method for the measurement of pore size distributions in cement-based materials [J].
Diamond, S .
CEMENT AND CONCRETE RESEARCH, 2000, 30 (10) :1517-1525
[9]   Preparation and characterization of graphene oxide paper [J].
Dikin, Dmitriy A. ;
Stankovich, Sasha ;
Zimney, Eric J. ;
Piner, Richard D. ;
Dommett, Geoffrey H. B. ;
Evmenenko, Guennadi ;
Nguyen, SonBinh T. ;
Ruoff, Rodney S. .
NATURE, 2007, 448 (7152) :457-460
[10]   Enhancement of barrier properties of cement mortar with graphene nanoplatelet [J].
Du, Hongjian ;
Pang, Sze Dai .
CEMENT AND CONCRETE RESEARCH, 2015, 76 :10-19
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