Multi-layer graphene-engineered cementitious composites with multifunctionality/intelligence

Shengwei Sun, Siqi Ding, Baoguo Han, Sufen Dong, Xun Yu, Debao Zhou, Jinping Ou

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

This paper is aimed at studying mechanical property, electrical property, piezoresistive effect, thermal-resistance effect and electromagnetic property of the cementitious composites filled with different content of multi-layer graphenes (MLGs). Results demonstrated that the compressive strength and elastic modulus of cementitious composites filled with MLGs increased 54% and 50%, respectively. The percolation threshold of electrical resistivity of cementitious composites filled with MLGs is nearly 2 vol %. Cementitious composites filled with MLGs possess sensitive piezoresistive effect and stable responsibility to cyclic quasi static and dynamic loading conditions. The electrochemical impedance spectroscopy and equivalent circuit were used to analyze the conductive mechanism of the cementitious composites filled with MLGs. The sensitivity of thermal-resistance effect of the cementitious composites filled with MLGs presents a decreasing trend with the increase of MLG content. The best shielding effectiveness of cementitious composites filled with MLGs is 1.6 times of that of cementitious composites without MLGs. The highest electromagnetic wave absorbing performance of cementitious composites filled with MLGs is −33 dB, which is nearly 7 times of that of cementitious composites without MLGs.

Original languageEnglish (US)
Pages (from-to)221-232
Number of pages12
JournalComposites Part B: Engineering
Volume129
DOIs
StatePublished - Nov 15 2017

Bibliographical note

Funding Information:
The authors thank the funding supported from the National Science Foundation of China (51578110 and 51428801).

Publisher Copyright:
© 2017 Elsevier Ltd

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

  • Cementitious composites
  • Compressive stress
  • Electrical resistivity
  • Electromagnetic property
  • Multi-layer graphene
  • Piezoresitivity
  • Thermal-resistance effect

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