A review on alkali-aggregate reactions in alkali-activated mortars/concretes made with alkali-reactive aggregates

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  • Caijun Shi, China Bldg Mat Acad, State Key Lab Green Bldg Mat
  • ,
  • Zhenguo Shi
  • ,
  • Xiang Hu, Hunan Univ, Hunan University, Coll Civil Engn
  • ,
  • Rui Zhao, Hunan Univ, Hunan University, Coll Civil Engn
  • ,
  • Linlin Chong, Hunan Univ, Hunan University, Coll Civil Engn

Alkali-activated binders are attracting more and more attention as they could potentially be substitutes for traditional Portland cement. Alkali-aggregate reaction (AAR) has been intensively studied for Portland cement-based materials, but much less investigated for the alkali-activated binders. Thereby, precautions should still be made when the alkali-activated binders are used to produce concrete with alkali-reactive aggregates, though many studies have reported that alkali-activated cement-based materials demonstrated better performance than conventional cement-based materials. This paper reviews the research progresses on AAR in mortars and concretes made with alkali-activated binders and alkali reactive aggregates. A variety of factors, such as binders, activators, reactive aggregates are discussed. The applicability of existing testing methods for AAR in alkali-activated binders is also discussed.

Original languageEnglish
JournalMaterials and Structures
Volume48
Issue3
Pages (from-to)621-628
Number of pages8
ISSN1359-5997
DOIs
Publication statusPublished - Mar 2015

    Research areas

  • Alkali-activated binder, Alkali-aggregate reaction, Activator, Expansion, FLY-ASH, SILICA REACTION, CEMENT MORTARS, SLAG CONCRETE, WATER-GLASS, CORROSION-RESISTANCE, HYDRATION KINETICS, BINDERS, CARBONATION, DURABILITY

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