한국지반신소재학회논문집 (Journal of the Korean Geosynthetics Society)

  • 제12권1호
  • /
  • Pages.21-28
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  • 2013
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  • 2508-2876(pISSN)
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  • 2287-9528(eISSN)
한국지반신소재학회 (Korean Geosynthetics Society)
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점성토 지반 개량을 위한 최적 생석회 첨가량 결정 및 이에 따른 소성 및 강도 특성 분석

The Study of Optimum Lime Content for Ground Improvement of Clayey Soils and Its Effects on Plasticity and Strength Characteristics

  • Goo, Jeong-Min (Research Dept., Dong Myeong Engineering) ;
  • Choi, Changho (Dept. of Geotechnical Engineering, Korea Institute of Construction Technology)
  • 투고 : 2013.02.20
  • 심사 : 2013.03.13
  • 발행 : 2013.03.30
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초록

본 연구에서는 점성토 지반의 지반공학적 특성의 개량을 목적으로 ${\bigcirc}{\bigcirc}$지역에서 채집한 점성토와 이에 대한 대표적 점토광물인 Kaolinite 및 Na-Bentonite에 대하여 최적 생석회 첨가량 결정법(ASTM C 977-22) 방법에 의거하여 각 시료에 대하여 생석회 첨가량을 결정하였다. 이에 대한 지반공학적 특성인 아터버그한계, 일축압축강도의 변화에 대하여 분석하였으며, 시간경과에 따른 Ca 이온 변화 및 점토입자의 미세결정구조 변화를 관찰, 분석하였다. 본 실험 결과 점성토 지반의 지반공학적 특성 개선을 위하여 첨가되는 생석회 첨가량은 최적 생석회 첨가량 결정법에 의해 효과적으로 결정할 수 있고, 시간에 따른 $Ca^{2+}$ 이온 변화 측정치는 점성토 지반의 지반공학적 개선효과 추정에 활용 가능함을 확인하였다.

This study proposed optimum lime contents for clayey soils consisting of representative clay minerals, Kaolinite and Na-Bentonite, according to optimum lime content method (ASTM C 977-22) by means of ground improvement method of clayey soils. As geotechnical properties, the variations of atterberg limits and unconfined compressive strength were analyzed and Ca-ion and micro-structure along elapsed time were observed for lime-added clayey specimens. The test results show that optimum lime content method provides an appropriate methodology for ground improvement of clayey soils and the variation of $Ca^{2+}$ might be a good index to predict the rate of ground improvement for clayey soils with lime addition.

키워드

참고문헌

  1. Boardman D. I.(1999), Lime stabilisation : clay/lime interaction, Ph.D Thesis, Univ. of Loughborough.
  2. Boardman D. I., Glendinning S. and Rogers C. D. F. (2001), "Development of stabilisation and solidification in lime-clay mixes", Geotechnique, Vol.50, No.6, pp.533-543.
  3. Chun, B. S. (2001), "Improvement Effectiveness of Soft Ground Using Hardening Agent", Journal of Korean Geo-environmental Society, Vol.2, No.2, pp.59-64.
  4. Das, B. M. (2000), Fundamentals of Geotechnical Engineering, Brooks/Cole, pp.5-21.
  5. Goo, J. M., Kwon M. N. and Kim, H. K. (2001), "Strength and Permeability of Sand-Bentonite-Lime mixtures", Journal of Korean Agricultural Civil Engineering, Vol.43, No.2, pp.122-131.
  6. Koh, G-S. (2000), A study on engineering characteristics and applicability of Korean quick lime, Ph.D Thesis, Hanyang University.
  7. KOSIS (2013), "Mining and manufacturing industry/energyt", Korean Statistical Information Service, http://kosis.kr.
  8. Kown, M. N. and Goo, J. (2006), "Fundamental Studies on Stabilization of Shallow Slope Failure Using Lime Pile-Change of Clayey with Lime Addition-", Journal of Korean Geo-environmental Society, Vol.7, No.5, pp.49-55.
  9. Lee, J. D. and Bae, W. S. (2007), "Characteristics of Compressive Strength Corresponding to the Time Lapse of Quicklime Injected Clay", Journal of Korean Geo-environmental Society, Vol.8, No.4, pp.13-17.
  10. Rogers, C. D. F., Glendinning S. and Troughton V. M. (2000), The use of additives to enhance the performance of lime piles, Geosystems, Helsinki, Finland, published by Badding information Ltd. Helsinki, pp.127-134.

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  1. Characteristics of the Non-electric Water Purification System Using Onggi Filter vol.51, pp.4, 2014, https://doi.org/10.4191/kcers.2014.51.4.332