Linking New Australian Alkali Silica Reactivity Tests to World-Wide Performance Data  

Author: P. Rocker, J. Mohammadi, V. Sirivivatnanon, W. South
Type: Article in proceedings
Date: 2015-08-31
Publisher: Concrete Institute of Australia
City: Melbourne, Australia
Source: Proceedings of the concrete 2015 conference: 27th biennial national conference of the concrete institute of Australia in conjunction with the 69th RILEM week conference, 2015, pp. 502–513.
ISBN: 978-1-943847-70-9  

Keywords: AMBT, ASR, CPT, ASR performance limits,  

Rights:   (c) 2015 the authors

Abstract:
The long awaited Australian Standard test methods to detect alkali-silica reactivity (ASR) of aggregates -  AS 1141.60.1 accelerated mortar bar test (AMBT) and AS 1141.60.2 concrete prism test (CPT) -  were published in September 2014. Both test methods were adopted correspondently from the ASTM 1260 and ASTM C1294 test methods but with different performance limits leading to a new class of slowly reactive aggregates. This paper reviews international and Australian research which supported these new performance limits. It also reviews and examines the value of these testing methods in predicting the ASR of aggregates in field-exposed large concrete blocks and a limited number of concrete structures. The outcomes may le ad to a consideration of the hierarchy of these two test methods.