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http://dx.doi.org/10.7855/IJHE.2012.14.6.037

Effect of Cement Alkali Content on ASR Expansibility by the Test Method of ASTM C 1260  

Jeon, Sung Il (한국건설기술연구원 도로연구실)
Son, Hyeon Jang (한국건설기술연구원 도로연구실)
Kwon, Soo Ahn (한국건설기술연구원 도로연구실)
Yun, Kyung Ku (강원대학교 공과대학 토목공학과)
Publication Information
International Journal of Highway Engineering / v.14, no.6, 2012 , pp. 37-43 More about this Journal
Abstract
PURPOSES : This study is to evaluate the feasibility of setting the standard of cement alkali content by using ASTM C 1260(accelerated mortar bar test) METHODS : This study analyzes the ASR(alkali silica reaction) expansion of cement mortar bar based on the changes in the aggregate type(fine, coarse), cement type(ordinary, low alkali), and replacement contents of fly ash. ASR tests were conducted according to ASTM C 1260. RESULTS : In this test results, There is no big difference in the ASR expansion between ordinary cement and low alkali cement. From this test results, it was found that the variation of cement alkali content did not have a effect on ASR expansion because mortar bar was placed in a container with sufficient alkali aqueous solution at high temperature during the test process of ASTM C 1260. CONCLUSIONS : It is evidently clear that the alkali content of cement have a effect on ASR. But ASTM C 1260 is difficult to assess this effect.
Keywords
alkali-silica reactivity; low alkali cement; fly ash; equivalent alkali content;
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  • Reference
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