Properties of fly ash-based geopolymer mortars

A. M. Said, O. Saleh, A. Ayad

Research output: Chapter in Book/Report/Conference proceedingConference contribution


There is a growing need for alternative binders with smaller carbon footprint. The cement manufacture is an energy intensive process that is one of the major global contributors to carbon dioxide emission. Fly ash-based geopolymer binders represent one of these potential alternatives. Beside consuming a largely produced byproduct, fly ash-based geopolymers generally have better mechanical performance when exposed to elevated temperatures. This study evaluates the effect of the initial curing temperature and the alkaline activation solution proportions on the strength, pores structure and crystal structure of fly ash-based geopolymer mortars. The geopolymer was synthesized using Class F fly ash, potassium hydroxide solution and sodium silicate solution. The specimens were made using various ratios of sodium silicate to potassium hydroxide and were initially cured at different temperatures and their properties were studied in terms of mechanical and microstructural properties.

Original languageEnglish (US)
Title of host publicationSustainable Concrete with Beneficial Byproducts
EditorsMoncef L. Nehdi
PublisherAmerican Concrete Institute
Number of pages14
ISBN (Electronic)9781641950770
StatePublished - Oct 9 2019
EventSustainable Concrete with Beneficial Byproducts at the Concrete Convention and Exposition 2017 - Anaheim, United States
Duration: Oct 15 2017Oct 19 2017

Publication series

NameAmerican Concrete Institute, ACI Special Publication
ISSN (Print)0193-2527


ConferenceSustainable Concrete with Beneficial Byproducts at the Concrete Convention and Exposition 2017
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)


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