Title: Experimental investigations to evaluate the alkali-carbonate reactivity and alkali-silica reactivity of aggregates

Authors: Mohammad Shahidul Islam

Addresses: School of Engineering, The University of British Columbia, Okanagan Campus, 1137 Alumni Avenue, Kelowna, BC V1V 1V7, Canada

Abstract: The objective of this paper was to evaluate the alkali-silica reactivity (ASR) and alkali-carbonate reactivity (ACR) of the 14 aggregate groups quarried from different locations. In order to serve the stated purpose, the investigated aggregate groups were tested in determining their alkali-silica reactivity using the ASTM C 1260 at the ages of 2, 4, and 8 weeks, and the modified ASTM C 1293 (prisms submerged in the 1N NaOH at 80°C) at the test durations of 4, 8 and 13 weeks. The aggregate prone to the alkali-carbonate reactivity was accessed using the ASTM C 1105 at the ages of 3, 6 and 12 months. The study revealed that the aggregates susceptible to alkali-carbonate reactivity were also shown to be reactive due to the alkali-silica reactivity.

Keywords: alkali-silica reaction; ASR; alkali-carbonate reaction; ACR; test durations; failure limits; aggregate mineralogy; aggregates; reactivity.

DOI: 10.1504/IJSTRUCTE.2015.072478

International Journal of Structural Engineering, 2015 Vol.6 No.4, pp.354 - 367

Available online: 14 Oct 2015 *

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