Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Characteristics of Sedimentation and Self-weight Consolidation of Dredged clay Focusing on Fines Content and Falling Height

세립분 함유량 및 투기고에 따른 준설토의 자중압밀 특성

  • Kim, Jin-Young (Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Hye-Rin (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Jang, Jung-Min (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Lee, Sung-Yeol (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Jeong, Wun-Gie (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Jin, Young-Sik (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Jeong, Hyo-Jin (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Baek, Won-Jin (Department of Rural & Biosystems Engineering, Chonnam National University) ;
  • Kang, Kwon-Soo (Department of Civil Engineering, Seonam University) ;
  • Goh, Nam-Young (Department of Regional Construction Engineering, Chonbuk National University)
  • Received : 2016.09.05
  • Accepted : 2016.10.04
  • Published : 2016.11.30
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Abstract

In this paper, analyzes the characteristics of self-weight consolidation on the dredged clay according to the fines content and falling height. Research was performed with the dredged clay sampled by Sae-mangeum field site. Classification of fines content was performed by sieve analysis test. After adjusting the fine content, self-weight consolidation tests were carried out focussing on the variation of fines content and falling heights. From the test results of the self-weight consolidation test, samples with high fines content had reached sedimentation completion more later than ones with less fine content samples. In other words, the start of self-weight consolidation was slowing down with increasing of fines content. Also, from the test results of calculating the coefficient of sedimentation consolidation, the coefficient value were increased with the fines content increases. In addition, the change of sedimentation ratio and volume ratio showed more higher changed value as the fine content increases. Thus, it is important to consider the fines content when estimate the settlement time of dredged soil in field dredge work.

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References

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