Pressure-sensitive properties of emulsion modified graphene nanoplatelets/cement composites

被引：47
作者：
Xu, Jiaming [1 ]
Zhang, Dong [1 ]
机构：
[1] Tongji Univ, Sch Mat Sci & Engn, Key Lab Adv Civil Engn Mat, Minist Educ, Shanghai 201804, Peoples R China
来源：
CEMENT & CONCRETE COMPOSITES | 2017年 / 84卷
基金：
国家高技术研究发展计划(863计划);
关键词：
Graphene nanoplatelets; Emulsion; Cement; Pressure-sensitive properties; FIBER-REINFORCED CONCRETE; CEMENT COMPOSITES; CARBON NANOTUBES; SENSOR; OXIDE; MORTARS; PASTES; FILMS;
D O I：
10.1016/j.cemconcomp.2017.07.025
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Graphene nanoplatelets(GNP)/cement composites were prepared using three types of GNP with different structures. In order to investigate the effects of GNP and styrene-acrylate emulsion on properties of GNP/ cement composites, GNP with different addition (0-2.0 wt%) and styrene-acrylate emulsion (10 wt%) were mixed into cement through the method of mechanical stirring. Electrical performance and the pressure-sensitive property of GNP/cement composites were studied. The results showed that the addition of GNP to cement would lead to a significant drop of resistivity and make composites manifest pressure sensitivity. In addition, the structure (C/O atomic ratio) of GNP greatly affected the properties of the GNP/cement composites. A distinct enhancement in pressure sensitivity was found when emulsion was added to GNP/cement composites. The gauge factor of emulsion modified GNP/cement composites reached a peak value of 7.783, which was 1 order of magnitude higher than composites without emulsion. This work offered a new opportunity to make use of traditional cement materials combining with GNP. (c) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：74 / 82
页数：9
相关论文
共 29 条
  • [1] Cement-based sensors with carbon fibers and carbon nanotubes for piezoresistive sensing
    Azhari, Faezeh
    Banthia, Nemkumar
    [J]. CEMENT & CONCRETE COMPOSITES, 2012, 34 (07) : 866 - 873
  • [2] A feasibility study of self-heating concrete utilizing carbon nanofiber heating elements
    Chang, Christiana
    Ho, Michelle
    Song, Gangbing
    Mo, Yi-Lung
    Li, Hui
    [J]. SMART MATERIALS AND STRUCTURES, 2009, 18 (12)
  • [3] Nano reinforced cement and concrete composites and new perspective from graphene oxide
    Chuah, Samuel
    Pan, Zhu
    Sanjayan, Jay G.
    Wang, Chien Ming
    Duan, Wen Hui
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2014, 73 : 113 - 124
  • [4] Dong BQ, 2011, ACI MATER J, V108, P543
  • [5] Improvement in concrete resistance against water and chloride ingress by adding graphene nanoplatelet
    Du, Hongjian
    Gao, Hongchen Jacey
    Pang, Sze Dai
    [J]. CEMENT AND CONCRETE RESEARCH, 2016, 83 : 114 - 123
  • [6] Enhancement of barrier properties of cement mortar with graphene nanoplatelet
    Du, Hongjian
    Pang, Sze Dai
    [J]. CEMENT AND CONCRETE RESEARCH, 2015, 76 : 10 - 19
  • [7] Electrical resistance of carbon-nanofiber concrete
    Gao, Di
    Sturm, Mariel
    Mo, Y. L.
    [J]. SMART MATERIALS AND STRUCTURES, 2009, 18 (09)
  • [8] Electrical conductivity of oxidized-graphenic nanoplatelets obtained from bamboo: effect of the oxygen content
    Gross, K.
    Prias Barragan, J. J.
    Sangiao, S.
    De Teresa, J. M.
    Lajaunie, L.
    Arenal, R.
    Ariza Calderon, H.
    Prieto, P.
    [J]. NANOTECHNOLOGY, 2016, 27 (36)
  • [9] Embedded piezoresistive cement-based stress/strain sensor
    Han, Baoguo
    Ou, Jinping
    [J]. SENSORS AND ACTUATORS A-PHYSICAL, 2007, 138 (02) : 294 - 298
  • [10] Self-sensing of carbon nanofiber concrete columns subjected to reversed cyclic loading
    Howser, R. N.
    Dhonde, H. B.
    Mo, Y. L.
    [J]. SMART MATERIALS & STRUCTURES, 2011, 20 (08)
123