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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
박기수 (Korea Institute of Civil Engineering and Building Technology) 박희문 (Korea Institute of Civil Engineering and Building Technology)
저널정보
한국도로학회 한국도로학회논문집 한국도로학회논문집 제20권 제4호
발행연도
2018.1
수록면
21 - 26 (6page)

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초록· 키워드

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PURPOSES : The objective of this study is to evaluate the application of soil stabilization method for soft shoulder construction in the iRoad Project of Sri Lanka. METHODS : Firstly, the quantitative analysis of soil strength improvement due to soil stabilization was done for soil samples collected from iRoad construction sites. Two types of soils were selected from iRoad Project sites and prepared for soil stabilization testing by the Road Development Authority. Secondly, the appropriate stabilizer was selected at given soil type based on test results. Two different stabilizers, ST-1 and ST-2, produced in Korea were used for estimating soil strength improvements. Finally, the optimum stabilizer content was determined for improving shoulder performance. The uniaxial compressive strength (UCS) test was conducted to evaluate the strength of stabilized soil samples in accordance with ASTM D 1633. The use of bottom ash as a stabilizer produced from power plant in Sri Lanka was also reviewed in this task. RESULTS : It is found from the UCS testing that a 3% use of soil stabilizer can improve the strength up to 2~5 times in stabilized soft shoulder soils with respect to unstabilized soils. It is also observed from UCS testing that the ST-1 shows high strength improvement in 3% of stabilizer content but the strength improvement rate with increase of stabilizer content is relatively low compared with ST-2. The ST-2 shows a low UCS value at 3% of content but the UCS values increase significantly with increase of stabilizer content. When using the ST-2 as stabilizing agent, the 5% is recommended as minimum content based on UCS testing results. Based on the testing results for bottom ash replacement, the stabilized sample with bottom ash shows the low strength value. CONCLUSIONS : This paper is intended to check the feasibility for use the soil stabilization technique for shoulder construction in Sri Lanka. The use of soil stabilizer enables to improve the durability and strength in soft shoulder materials. When applying the bottom ash as a soil stabilizer, various testings should be conducted to satisfy the specification criteria.
#Soil Stabilization #Soft Shoulder #Uniaxial Compressive Strength #Bottom Ash

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참고문헌 (5)

참고문헌 신청
Bhattacharja, S. / 2003 / Comparative Performance of Portland Cement and Lime in Stabilization of Moderate to High Plasticity Clay Soils. RD125 google schola Integrated Road Investment Program (iRoad) google schola Mekkawy, M. M. / 2010 / Performance Problems and Stabilization Techniques for Granular Shoulders / Journal of Performance of Constructed Facilities 24(2) google schola Texas Department of Transportation / 2005 / Guidelines for Modification and Stabilization of Soils and Base for Use in Pavement Structures google schola Transport Research Laboratory (TRL) / 1993 / A Guide to the Structural Design of Bitumen-surfaced Roads in Tropical and Sub-tropical countries - Road Note 31 google schola

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