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http://dx.doi.org/10.4334/JKCI.2008.20.6.689

Evaluation of Alkali-Silica Reactivity for Aggregates in Korea according to Test Methods  

Yun, Kyong-Ku (Dept. of Civil Engineering, Kangwon National University)
Kim, Seong-Kwon (Dept. of Civil Engineering, Kangwon National University)
Hong, Seung-Ho (Pavement Research Group, Korea Expressway Corporation)
Han, Seung-Hwan (Pavement Research Group, Korea Expressway Corporation)
Publication Information
Journal of the Korea Concrete Institute / v.20, no.6, 2008 , pp. 689-696 More about this Journal
Abstract
The purpose of this study was to evaluate the alkali-silica reactivity for aggregates in Korea according to test methods: accelerated mortar bar test (AMBT) by ASTM C 1260; chemical test by KS F 2545 (ASTM C 289). The results are as follows: The AMBT (ASTM C 1260) results showed that two (2) igneous rocks (two mica granite and felsite), three (3) sedimentary rocks (arkose, red sandstone and shale), two (2) metamorphic rock (slate and vitric tuff), one (1) mineral (quartz) showed more expansion than 0.1% at 14 days. But, some sedimentary rocks and metamorphic rocks expanded more than 0.1% at 28 days even though they were less than 0.1% at 14 days. Therefore, it is necessary to extend the experimental dates more than 14 days to evaluate the possibility of alkali-aggregate reactivity. The chemical test (KS F 2545) results showed that five (5) igneous rocks (andesite, diabase, granite porphyry, muscovite granite and diorite) were indicative of potentially deleterious expansion, while two (2) igneous rocks (diorite porphyry and quartz porphyry) were possible indicative of expansion, and three (3) igneous rocks (biotite granite, two mica granite and felsite) were indicative of innocuous reactivity. The above results showed that the results from chemical method (KS F 2545) and AMBT (ASTM C 1260) had little relationship.
Keywords
ASR; cement concrete pavement; KS F 2545; ASTM C 1260; reactive aggregate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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