Graphene oxide as additive to replace using air-entraining agents

Alyaa Mohammed, Jay Sanjayan, Ali Nazari, Nihad T.K. Al-Saadi, Wenhui Duan

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

Despite its negative impact on compressive strength of concrete, practitioners rely exclusively on using air entrainment to defeat freezing-and-thawing deterioration. This paper describes the use of graphene oxide (GO) as an effective method to minimize the negative impact of freezing-and-thawing action in concrete while maintaining high compressive strength. Two series of graphene oxidebearing concrete samples (containing 0.01% and 0.06% graphene oxide by cement weight) were produced. Plain concrete samples and samples with 4% air-entraining content were also produced for comparison. All the concrete samples were subjected to up to 500 repeated freezing-and-thawing cycles. Different series of tests such as electric resistance, nitrogen adsorption, and compressive strength were conducted within and at the end of the freezing-andthawing cycles. The results show that the GO specimens indicate higher initial compressive strength than the control and the air-entrained specimens. A significant enhancement of freezingand- thawing resistance in the graphene oxide-bearing concrete samples was expressed in maintaining the compressive strength close to initial values before the exposure to freezing-and-thawing cycles.

Original languageEnglish
Pages (from-to)859-866
Number of pages8
JournalACI Materials Journal
Volume114
Issue number6
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • Air content
  • Freezing and thawing
  • Graphene oxide
  • Microcrack
  • Nitrogen adsorption

Cite this