Geopolymer concrete at ambient and elevated temperatures : recent developments and challenges

Zhong Tao, Zhu Pan

Research output: Chapter in Book / Conference PaperConference Paperpeer-review

19 Citations (Scopus)

Abstract

![CDATA[Geopolymer concrete (GPC) is attracting increasing attention due to its potential to replace ordinary Portland cement (OPC) concrete to reduce the carbon dioxide emissions from cement production. Although extensive research has been conducted in this area since the 1970s, its applications in engineering practice are still very limited. This paper briefly reviews the recent developments of GPC and its properties at ambient and elevated temperatures. It was found that GPC generally exhibits comparative properties to OPC concrete at ambient temperature. In contrast, GPC often has better fire performance and superior durability. Therefore, GPC could be advantageously used to improve the fire performance and durability of buildings and infrastructure. While a lot of aluminosilicate raw materials (such as fly ash) are low cost, the prohibitive costs of laboratory grade activators (such as sodium hydroxide and sodium silicate) greatly limit the widespread application of GPC. Therefore, there is a need to develop low-cost geopolymer concrete. Meanwhile, a few other challenges should also be overcome, such as difficulties to achieve consistent properties and to control efflorescence of GPC. Further research is required at both material and structural levels to address these issues. Particularly, there is a need to develop relevant building codes to promote the use of GPC in practice.]]
Original languageEnglish
Title of host publicationProceedings of the South Asia Conference on Earthquake Engineering (SACEE 2019), 21-22 February 2019, Karachi, Pakistan
PublisherNED University of Engineering and Technology
Pages113-127
Number of pages15
DOIs
Publication statusPublished - 2019
EventSouth Asia Conference on Earthquake Engineering -
Duration: 21 Feb 2019 → …

Publication series

Name
ISSN (Print)1023-3873

Conference

ConferenceSouth Asia Conference on Earthquake Engineering
Period21/02/19 → …

Keywords

  • concrete
  • fire performance
  • mechanical properties
  • polymeric composites
  • service life (engineering)

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