Journal of
Engineering and Technology Research

  • Abbreviation: J. Eng. Technol. Res.
  • Language: English
  • ISSN: 2006-9790
  • DOI: 10.5897/JETR
  • Start Year: 2009
  • Published Articles: 184

Review

Review on fly ash-based geopolymer concrete without Portland Cement

Mohd Mustafa Al Bakri1*, H. Mohammed2, H. Kamarudin1, I. Khairul Niza3 and Y. Zarina1
1School of Material Engineering, Universiti Malaysia Perlis (UniMAP), P. O. Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia. 2King Abdul Aziz City Science and Technology (KACST), P. O. Box 6086, Riyadh 11442, Kingdom of Saudi Arabia. 3School of Environmental Engineering, Universiti Malaysia Perlis (UniMAP), P. O. Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia.
Email: [email protected]

  • Article Number - F570AE810697
  • Vol.3(1), pp. 1-4, January 2011
  •  Accepted: 19 November 2010
  •  Published: 31 January 2011

Abstract

 

The consumption of Ordinary Portland Cement (OPC) caused pollution to the environment due to the emission of CO2. As such, alternative material had been introduced to replace OPC in the concrete. Fly ash is a by-product from the coal industry, which is widely available in the world. Moreover, the use of fly ash is more environmental friendly and save cost compared to OPC. Fly ash is rich in silicate and alumina, hence it reacts with alkaline solution to produce aluminosilicate gel that binds the aggregate to produce a good concrete. The compressive strength increases with the increasing of fly ash fineness and thus the reduction in porosity can be obtained. Fly ash based geopolymer also provided better resistance against aggressive environment and elevated temperature compared to normal concrete. As a conclusion, the properties of fly ash-based geopolymer are enhanced with few factors that influence its performance.

 

Key words: Fly ash-based geopolymer, alkaline solution, compressive strength.

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