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http://dx.doi.org/10.4334/JKCI.2011.23.1.049

Characteristics of Alkali-Silica Reaction according to Types and Substitution Ratios of Mineral Admixtures in Korea  

Kim, Seong-Kwon (Dept. of Civil Engineering, Kangwon National University)
Hong, Seung-Ho (Highway Corporation)
Hur, In (Highway Corporation)
Yun, Kyong-Ku (Dept. of Civil Engineering, Kangwon National University)
Publication Information
Journal of the Korea Concrete Institute / v.23, no.1, 2011 , pp. 49-55 More about this Journal
Abstract
The distresses of alkali-silica reaction (ASR) was recently reported at highway cement concrete pavement in Korea, which showed typical cracking and spalling patterns of ARS. Korea is was no longer safe zone against ASR, needding to find a control methodology against ASR. The purpose of this research was to provide a control methodology against ASR using mineral admixtures through a series of laboratory test program. Laboratory works included the accelerated mortar bar test (AMBT) by ASTM C 1260 regulation with five types of aggregate and three types of mineral admixtures (fly ash, ground granulated blast-furnace slag and silica fume). The result of ASTM C 1260 test for five types of aggregates without mineral admixtures showed that Siltstone and Mudstone were found to be "reactive." Tuff and Andesite-1 were found to be "possiblely reactive." In case of concrete mixed with 10, 20, and 30% fly ash, all specimens except Mudstone mixed with 10% FA were found to be "non-reactive". In cases of concrete mixed with 30, 40, and 50% ground granulated blast-furnace slag and 5, 7.5, and 10% silica fume, all specimens were found to be "non-reactive." These results could be selectively applied in constructions in Korea.
Keywords
ASR; ASTM C 1260; fly ash; ground granulated blast-furnace slag; silica fume;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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