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경량혼합토의 도로 노상층 재료 사용 가능성 평가 Evaluation of Lightweight Soil as a Subgrade Material

박대욱, 보베이트하이
  • 언어KOR
  • URLhttp://db.koreascholar.com/Article/Detail/250130
한국도로학회논문집
제15권 제5호 (2013.10)
pp.57-64
한국도로학회 (Korean Society of Road Engineers)
초록

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.

저자
  • 박대욱 | Park, Dae-Wook
  • 보베이트하이 | Vo, Viet Hai