Activation energy of alkali-silica reaction in CFBC fly ash geopolymer mortars

Shon Chang-Seon, Lee Dongoun

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

1 Citation (Scopus)

Abstract

The utilization of fly ashes produced by circulated fluidized bed combustion (CFBC) has been limited in construction application due to their inherent high sulfate and carbon contents although CFBC fly ash exhibits very good binding properties without requiring any supplementary activator. This study reports alkali silica reaction (ASR) behavior of CFBC fly ash geopolymer mortars in terms of activation energy using a modified ASTM C 1260/C 1567. Two different strengths of NaOH solution were used to test reactive and potentially reactive aggregates in the presence of CFBC fly ash. The other variables included a longer test period of 3 months and three different temperatures, namely 60°C, 70°C, and 80°C. It was observed that there was no significant expansion in CFBC fly ash based geopolymer mortar regardless of variation of temperature and alkalinity of test solution. Activation energy of CFBC fly ash geopolymer for ASR was higher than that of plain cement mortar irrespective of strength of NaOH solution.

Original languageEnglish
Title of host publicationManufacturing Sciences and Technologies VII
PublisherTrans Tech Publications
Pages77-82
Number of pages6
ISBN (Print)9783038357322
DOIs
Publication statusPublished - Jan 1 2017
Event7th International Conference on Manufacturing Science and Technology, ICMST 2016 - Sarawak, Malaysia
Duration: Jul 16 2016Jul 18 2016

Publication series

NameMaterials Science Forum
Volume882
ISSN (Print)0255-5476

Conference

Conference7th International Conference on Manufacturing Science and Technology, ICMST 2016
CountryMalaysia
CitySarawak
Period7/16/167/18/16

Fingerprint

Coal Ash
Geopolymers
Fluidized bed combustion
fly ash
Alkalies
Mortar
Fly ash
Silicon Dioxide
beds
alkalies
Activation energy
Silica
activation energy
silicon dioxide
Waste utilization
alkalinity
cements
Alkalinity
plains
Sulfates

Keywords

  • Activation energy
  • Alkali silica reaction
  • Circulating fluidized bed combustion fly ash
  • Geopolymer

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Chang-Seon, S., & Dongoun, L. (2017). Activation energy of alkali-silica reaction in CFBC fly ash geopolymer mortars. In Manufacturing Sciences and Technologies VII (pp. 77-82). (Materials Science Forum; Vol. 882). Trans Tech Publications. https://doi.org/10.4028/www.scientific.net/MSF.882.77

Activation energy of alkali-silica reaction in CFBC fly ash geopolymer mortars. / Chang-Seon, Shon; Dongoun, Lee.

Manufacturing Sciences and Technologies VII. Trans Tech Publications, 2017. p. 77-82 (Materials Science Forum; Vol. 882).

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

Chang-Seon, S & Dongoun, L 2017, Activation energy of alkali-silica reaction in CFBC fly ash geopolymer mortars. in Manufacturing Sciences and Technologies VII. Materials Science Forum, vol. 882, Trans Tech Publications, pp. 77-82, 7th International Conference on Manufacturing Science and Technology, ICMST 2016, Sarawak, Malaysia, 7/16/16. https://doi.org/10.4028/www.scientific.net/MSF.882.77
Chang-Seon S, Dongoun L. Activation energy of alkali-silica reaction in CFBC fly ash geopolymer mortars. In Manufacturing Sciences and Technologies VII. Trans Tech Publications. 2017. p. 77-82. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.882.77
Chang-Seon, Shon ; Dongoun, Lee. / Activation energy of alkali-silica reaction in CFBC fly ash geopolymer mortars. Manufacturing Sciences and Technologies VII. Trans Tech Publications, 2017. pp. 77-82 (Materials Science Forum).
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