Evaluation of Applicability of CMD-SOIL using the Deep Mixing Method in Ulsan Area for the Construction of Coastal Structure Foundation

Jae-Hyun Park; Kwang-Wu Lee; Kyong-Ju Mun; Dae-Sung Cho

doi:10.12814/jkgss.2023.22.3.061

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2023 Vol.22, Issue 3 Preview Page Next Page

Research Article

Evaluation of Applicability of CMD-SOIL using the Deep Mixing Method in Ulsan Area for the Construction of Coastal Structure Foundation 해안구조물 기초의 건설을 위해 울산지역에서의 심층혼합공법을 사용한 CMD-SOIL의 적용성 평가

30 September 2023. pp. 61-69

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Abstract

As global trade and maritime port environments change, the need to respond to larger and faster ships is increasing. Accordingly, new ports are being built around metropolitan cities such as Busan and Ulsan. In general, a compaction method using sand or gravel is applied to the construction of a new port. However, due to the lack of sand or gravel and the difficulty in securing economic feasibility due to the increase in unit price, the deep mixing method has recently been used. Therefore, in this study, CMD-SOIL using circulating resources was applied to the Ulsan area, and the applicability was determined by analyzing the laboratory mixing test and boring results at in-situ. As a result of the test, it was analyzed that it showed more than the design mixing strength, and it was possible to secure the similar performance as blast furnace slag cement. In addition, it was analyzed that the design standard strength can be sufficiently secured as a result of in-situ boring. Therefore, considering the field applicability in the Ulsan, it is judged that the use of CMD-SOIL is possible.

Keywords

CMD-SOIL

Deep mixing method

Applicability

Laboratory mixing test

In-situ boring result

세계 무역 및 항만 산업 환경이 변화함에 따라 선박의 대형화 및 고속화에 대한 대응 필요성이 높아지고 있다. 이에 따라 부산, 울산 등 광역도시를 중심으로 신항만의 건설이 이루어지고 있다. 일반적으로 신항만 건설은 모래 또는 자갈을 사용한 다짐공법이 적용되고 있다. 하지만 모래 또는 자갈이 부족하고, 단가상승으로 인해 경제성 확보가 어려워 최근에는 단시간에 요구되는 압축강도를 확보할 수 있는 심층혼합공법이 사용되고 있다. 따라서 본 연구에서는 순환자원을 이용한 CMD-SOIL을 울산지역에 적용하고, 실내 배합시험 및 현장 확인 보링 결과를 분석하여 적용성을 판단하고자 하였다. 시험결과, CMD-SOIL은 설계 배합강도 이상을 나타내었고, 고로슬래그 시멘트와 유사한 성능을 확보할 수 있는 것으로 분석되었다. 또한 현장에서의 확인 보링 결과, 설계 기준강도 이상을 충분히 확보할 수 있어 울산지역에서의 현장 적용성을 고려할 때 CMD-SOIL의 활용이 가능할 것으로 판단된다.

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Information

Publisher :Korean Geosythetics Society
Publisher(Ko) :한국지반신소재학회
Journal Title :Journal of the Korean Geosynthetics Society
Journal Title(Ko) :한국지반신소재학회 논문집
Volume : 22
No :3
Pages :61-69
Received Date : 2023-06-28
Revised Date : 2023-08-05
Accepted Date : 2023-08-08
DOI :https://doi.org/10.12814/jkgss.2023.22.3.061

Journal of the Korean Geosynthetics Society ISSN:2508-2876(Print) 2287-9528(Online) 한국지반신소재학회 논문집

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