Reliability of chemical index model in determining fly ash effectiveness against alkali-silica reaction induced by highly reactive glass aggregates

Jared Robert Wright, Seyed Shafaatian, Farshad Rajabipour

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

This study investigates the ability of six fly ashes to control ASR (alkali-silica reaction) generated by recycled glass sand. Specifically, this study evaluates the chemical index model's (Malvar and Lenke, 2006 [1]) capacity to accurately predict the fly ash dosage necessary to mitigate ASR. Results show the current model is conservative for low lime (CaO <10%) ashes (∼9% greater dosage than experimental results) and quite conservative for higher CaO (>10%) ashes (∼36% greater dosage than experimental results). Conclusions suggest revising model parameters can provide accurate predictions for low CaO ashes and moderately conservative predictions for higher CaO ashes.

Original languageEnglish (US)
Pages (from-to)166-171
Number of pages6
JournalConstruction and Building Materials
Volume64
DOIs
StatePublished - Aug 14 2014

All Science Journal Classification (ASJC) codes

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

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