경량혼합토의 도로 노상층 재료 사용 가능성 평가|RISS 상세보기

다국어 초록 (Multilingual Abstract)

PURPOSES: It is to evaluate lightweight soil as a subgrade material based on mechanical tests and calculation of pavement performance.
METHODS: In this research, various contents of cement and air foam are used to make lightweight soil using wasted dredged soil. Uniaxial compressive strength test is conducted to evaluate strength of 7 and 28 day cured specimens. Secant modulus was calculated based on the stress and strain relationship of uniaxial compressive strength test. Resilient modulus test was measured using by repeated triaxial compression test.
The measured resilient modulus was used in layered elastic program to predict fatigue and rutting life at a given pavement structure.
RESULTS : Uniaxial compressive strength increases as cement content increases but decrease as air foam content increases. Resilient modulus also increases as cement content increases and decrease as air foam content decrease.
CONCLUSIONS: It is concluded that dredge clay soil can be used as subgrade layer material using by lightweight treated soil method.

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참고문헌 (Reference)

1 김준영, "송도 지역 실트질 점성토 고화처리를 위한 최적 배합 조건" 한국지반공학회 27 (27): 5-15, 2011

2 Watabe, Y., "Use of Cement Treated Lightweight Soils made from Dredged Clays" 2012

3 KS, "Standard test method for unconfined compression test of soils"

4 Kim, D.H., "Simplification of Resilient Modulus Testing for Subgrades" Joint Transportation Research Program Technical, Indiana Department of Transportation and Purdue University 2006

5 오정호, "Mechanistic-Empirical Guideline for Routine Overweight Truck Traffic Routes" 한국재난정보학회 9 (9): 1-10, 2013

6 National Cooperation Highway Research Program(NCHRP), "Mechanistic-Empirical Design Guide of New and Rehabilitated Pavement Structure (MEPDG)"

7 Jo, S. A., "Geotechnical Characteristics of an Aerated Soil Stabilizer Mixture as Backfill Material" 35 (35): 586-595, 2012

8 Liu, H. L., "Effect of Different Mixing Ratios of Polystyrene Pre-Puff Beads and Cement on the Mechanical Behaviour of Lightweight Fill" 24 : 331-338, 2006

9 Tsuchida, T., "Development of A Geomaterial from Dredged Bay Mud" 13 (13): 152-160, 2001

10 Bae, Y. S, "Analysis of Determing the Mix Ratio and Strength for Lighweight Soils" 2010