Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Estimation of Uniaxial Compressive Strength and Elastic Modulus from Brazilian Test

Brazilian시험을 이용한 일축압축강도와 탄성계수의 추정(II)

  • 민덕기 (울산대학교 공과대학 건설환경공학부) ;
  • 문종규 (동명기술공단(주)) ;
  • 노재술 ((주)수성ENG, 울산대학교 공과대학)
  • Published : 2009.08.31
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Abstract

Little attention has been paid to Brazilian test for the estimation of uniaxial compressive strength and elastic modulus of rocks as an indirect method despite high availability of civil engineering parameters. This paper employed Brazilian test value to estimate two parameters of igneous rocks (granite, andesite, rhyolite) of Korea. High reliability of Brazilian test has been supported by the conclusions drawn from point load test and Schmidt hammer strike values. It has also been found that this method can be applied easily and rapidly to the estimation of uniaxial compressive strength and elastic modulus of rock cores when direct tests are not available.

본 연구는 Brazilian 시험결과를 매개로 일축압축강도와 탄성계수를 추정할 수 있는 경험식을 화성암의 대부분을 구성하는 화강암, 안산암 및 유문암을 대상으로 도출하였다. 기존 간편식(점하중 강도지수, Schmidt hammer 타격법)으로 도출된 결과와 비교, 검정을 하여 좋은 상관성과 신뢰성을 확인하였기에 Brazilian 시험은 일축압축강도와 탄성계수를 추정할수 있는 또 하나의 간접방법으로 사료된다. 특히 지질 조사시 얻은 제한된 코어로 인하여 직접시험이 어려운 경우에도 본 연구에서 제시하는 방법이 효율성이 있을 것으로 사료된다.

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References

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