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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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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.
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참고문헌 (6)
참고문헌 신청
2007 / Stand Test Method for Potential Alkali Reactivity of Aggregates(Mortar-Bar Method) / ASTM C 1260
D. Stark / 1978 / Effect of Alkalis in Cement ad Concrete / in Preceedings, Fourth International Conference
Richard Helmuth / 1993 / Alkali-Silica Reactivity : An Overview of Research :83
Sidney Mindess / 2003 / Concrete-2nd edition / Prentice Hall :142~144
Stanton, T. F. / 1940 / Expansion of Concrete Through reaction between cement and aggregate / Proc. Amer. Soc. of Civ. Engrs 66:1781~95
D. Stark / 1978 / Effect of Alkalis in Cement ad Concrete / in Preceedings, Fourth International Conference
Richard Helmuth / 1993 / Alkali-Silica Reactivity : An Overview of Research :83
Sidney Mindess / 2003 / Concrete-2nd edition / Prentice Hall :142~144
Stanton, T. F. / 1940 / Expansion of Concrete Through reaction between cement and aggregate / Proc. Amer. Soc. of Civ. Engrs 66:1781~95
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