Influences of Carbon Nanotubes and Polyvinyl Alcohol Nano-Composites on Mechanical Properties and Dry Shrinkage of Concrete

被引：0
|
作者：
Wang Z. [1 ]
Fan J. [2 ]
Li G. [1 ]
机构：
[1] College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou
[2] College of Civil Engineering, Guizhou Institute of Technology, Guiyang
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2020年 / 48卷 / 10期
关键词：
Carbon nanotubes; Concrete; Dry shrinkage; Mechanical properties; Polyvinyl alcohol;
D O I：
10.14062/j.issn.0454-5648.20200261
中图分类号：
学科分类号：
摘要：
Well-dispersive carbon nanotubes (CNTs)/polyvinyl alcohol (PVA) nano-colloidal emulsions were prepared based on the colloidal stability and interfacial chemistry. The effect of CNTs/PVA nano-colloidal emulsion on the mechanical properties, dry shrinkage and morphology of concrete was investigated. The results show that the 28 d compressive strength and flexural strength of concrete incorporating 0.3% (in mass fraction, the same below) CNTs and 1.0% PVA are increased by 10% and 15%, respectively, and the dry shrinkage rate of concrete containing 0.5% CNTs and 1.0% PVA after 7, 28, 180 d and 360 d curing is reduced by 76%, 34%, 22% and 21%, respectively, compared to the reference concrete. The effect of CNT-OH/PVA latex on the mechanical properties and dry shrinkage rate of concrete is attributed to the formation of CNTs/PVA interpenetrating networks in concrete, which prevents the concrete crack and refines the microstructure. © 2020, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
引用
收藏
页码：1653 / 1658
页数：5
相关论文
共 24 条
  • [1] AFROUGHSABET V, TENG S., Experiments on drying shrinkage and creep of high performance hybrid-fiber-reinforced concrete, Cem Concr Compos, 106, pp. 1-14, (2020)
  • [2] HAO Juan, YU Hongfa, J Mater Sci Eng, 26, 4, pp. 574-578, (2008)
  • [3] LIU Jianfei, ZHOU Qingjun, CONG Peiliang, Et al., Bull Chin Ceram Soc, 33, 8, pp. 2032-2037, (2014)
  • [4] LI G Y, WANG P M, ZHAO X H., Mechanical behavior and microstructure of cement composites incorporating carbon nanotubes, Carbon, 43, pp. 1239-1245, (2005)
  • [5] SHAO H, CHEN B, LI B, Et al., Influence of dispersants on the properties of CNTs reinforced cement-based materials, Constr Build Mater, 131, pp. 186-194, (2017)
  • [6] LI Gengying, Mechanical properties and sensing effect of carbon nanotube cement-based materials, (2007)
  • [7] ZHU Hongbo, WANG Peiming, LI Chen, Et al., J Chin Ceram Soc, 40, 10, pp. 1431-1436, (2012)
  • [8] YAZDANBKHAH A, GRASLEY Z., The theoretical maximum achievable dispersion of nano-inclusions in cement paste, Cem Concr Res, 42, 6, pp. 798-804, (2012)
  • [9] SOBOLKINA A, MECHTCHERINE V, KHAVRUS V, Et al., Dispersion of carbon nanotubes and its influence on the mechanical properties of the cement matrix, Cem Concr Compos, 34, 10, pp. 1104-1113, (2012)
  • [10] SOLIMAN E M, KANDIL U F, TAHA M M R., The significance of carbon nanotubes on styrene butadiene rubber (SBR) and SBR modified mortar, Mater Struct, 45, 6, pp. 803-816, (2012)
123