Details

Autor(en) / Beteiligte

• Lindgård, Jan
• Andiç-Çakır, Özge
• Fernandes, Isabel
• Rønning, Terje F.
• Thomas, Michael D.A.

Titel

Alkali–silica reactions (ASR): Literature review on parameters influencing laboratory performance testing

Ist Teil von

• Cement and concrete research, 2012-02, Vol.42 (2), p.223-243

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Utilisation of potentially alkali–silica reactive aggregates requires reliable performance tests to evaluate the alkali–silica reactivity of various aggregate combinations, including their alkali threshold dependence on binder type. Several such performance tests have been used worldwide for more than 15years, but none of the methods have proven to be reliable for use with all aggregate types and all binders. One of the objectives of RILEM TC 219-ACS (2007–2012) is to develop and validate one or more of such performance tests. Several parameters may influence the results obtained in an accelerated performance test compared to the field behaviour. Based on a state of the art literature review, this paper discusses which parameters must be considered to be able to develop reliable ASR performance testing methods and provides some tentative recommendations. The internal humidity in the test specimens, the extent of alkali leaching and the storage temperature are of particular importance.