Study on Young’s Modulus of Coarse Granular Materials with Grain Size Distribution Adjustment

Sung-Jin Lee; Il-Wha Lee; Su-Hyung Lee; Jin-Wook Lee

doi:10.7843/kgs.2013.29.7.47

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2013 Vol.29, Issue 7 Preview Page Next Page

Study on Young’s Modulus of Coarse Granular Materials with Grain Size Distribution Adjustment 입도조정된 조립재료의 탄성계수에 대한 연구

31 July 2013. pp. 47-55

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Abstract

In the element test for coarse granular materials, the grain size distributions of the materials are often adjusted, in case the grain size of coarse material in the field is larger than the available maximum grain size of the laboratory test equipment. In this study, we carried out the large cyclic triaxial test to evaluate the effect of the grain size distribution adjustment on Young’s modulus in small to intermediate strain level. The test results showed that the coarse granular materials with the adjusted grain size distribution underestimated Young’s modulus of the original materials. The difference of Young’s modulus was larger in small strain level than in intermediate strain level.

Keywords

Coarse granular material

Large triaxial test

Young’s modulus

Grain size distribution

Parallel grading

Scalp-Replace

조립재료의 요소시험에서 장비에 허용되는 조립재료의 입자크기가 실제 현장에서 사용되는 입자크기에 비해 작은 경우가 종종 발생하기 때문에, 이러한 경우에는 시험에 사용되는 재료의 최대입경을 시험장치의 가용 크기까지 축소시켜 시험을 수행하게 된다. 본 연구에서는 이처럼 최대입경 크기를 축소시켜 입도를 조정했을 때, 저변형률에서의 탄성계수에 미치는 영향을 평가하기 위해 대형반복삼축압축시험을 수행하였다. 본 연구 대상재료의 시험 결과, 입도조정된 시편들은 원입도 시편의 탄성계수를 과소평가하는 경향이 있었으며, 그 차이는 저변형률에서 더 크게 발생되었다.

References

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Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 29
No :7
Pages :47-55
Received Date : 2013-04-12
Revised Date : 2013-06-21
Accepted Date : 2013-07-05
DOI :https://doi.org/10.7843/kgs.2013.29.7.47

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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