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ASTM C 1260 실험방법에 의한 시멘트 알칼리 함량이 ASR 팽창성에 미치는 영향 Effect of Cement Alkali Content on ASR Expansibility by the Test Method of ASTM C 1260

전성일, 손현장, 권수안, 윤경구
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  • URLhttp://db.koreascholar.com/Article/Detail/250033
한국도로학회논문집
제14권 제6호 (2012.12)
pp.37-43
한국도로학회 (Korean Society of Road Engineers)
초록

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.

저자
  • 전성일 | Jeon, Sung Il
  • 손현장 | Son, Hyeon Jang
  • 권수안 | Kwon, Soo Ahn
  • 윤경구 | Yun, Kyung Ku