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http://dx.doi.org/10.7855/IJHE.2013.15.5.057

Evaluation of Lightweight Soil as a Subgrade Material  

Park, Dae-Wook (국립군산대학교 토목공학과)
Vo, Viet Hai (국립군산대학교 토목환경공학부)
Publication Information
International Journal of Highway Engineering / v.15, no.5, 2013 , pp. 57-64 More about this Journal
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.
Keywords
lightweight soil; air foam; dredge clay; resilient modulus; subgrade; pavement performance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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