International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of Lightweight Soil as a Subgrade Material

경량혼합토의 도로 노상층 재료 사용 가능성 평가

  • Received : 2013.08.06
  • Accepted : 2013.10.02
  • Published : 2013.10.15
Download PDF
⟨ Previous Next ⟩

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

References

  1. Jo, S. A., Lee, C., Lim, Y., Jin, K. N., and Cho, G. C., 2012. Geotechnical Characteristics of an Aerated Soil Stabilizer Mixture as Backfill Material, Geotechnical Testing Journal, Vol. 35, No. 4, pp586-595.
  2. Kim, D.H., Siddiki, N.Z. 2006. Simplification of Resilient Modulus Testing for Subgrades. Joint Transportation Research Program Technical, Indiana Department of Transportation and Purdue University, West Lafayette, Indiana, USA
  3. Liu, H. L., Deng, A., and Chu, J., 2006. Effect of Different Mixing Ratios of Polystyrene Pre-Puff Beads and Cement on the Mechanical Behaviour of Lightweight Fill, Geotextiles and Geomembranes, Vol. 24, pp. 331-338. https://doi.org/10.1016/j.geotexmem.2006.05.002
  4. National Cooperation Highway Research Program(NCHRP), 2004. Mechanistic-Empirical Design Guide of New and Rehabilitated Pavement Structure (MEPDG).
  5. Oh, J.H.,2013. Mechanistic-Empirical Guideline for Routine Overweight Truck Traffic Routes". Journal of Korea Society of Disaster Information, Vol.9, No. 1, pp. 1-10. (오정호, 2013. 과하중 트럭운행 도로에 대한 역학적-경험적 지침, 한국방재학회 논문집 9권 1호, pp. 1-10)
  6. Tsuchida, T., Porbaha, A., and Yamane, N., 2001. Development of A Geomaterial from Dredged Bay Mud, Journal of Materials in Civil Engineering, Vol. 13, No. 2, pp. 152-160. https://doi.org/10.1061/(ASCE)0899-1561(2001)13:2(152)
  7. Watabe, Y., 2012. Use of Cement Treated Lightweight Soils made from Dredged Clays, 5th International Symposium on Contaminated Sediments, Montreal, QC, Canada.
  8. Bae, Y. S. and Yoon, G. L., 2010. Analysis of Determing the Mix Ratio and Strength for Lighweight Soils, 2010 Korea Geotechnical Society National Conference, Korea (배윤식, 윤길림., 2010. 경량혼합토 배합비율과 강도특성, 2010년 한국지반공학회 학술발표회)
  9. Kim, J. Y., Jang, E. R., Chung, C. K., and Jang, S. H., 2011. The Optimum Mixture Condition for Stablization of Songdo Silty Clay, Journal of Korean Geotechnical Society, Vol. 27, No. 5, pp. 5-15. (김준영, 장의룡, 정충기, 장순호, 2011. 송도지역 실트질 점성토 고화처리를 위한 최적배합설계, 한국지반공학회 논문집 제 27권 5호, pp. 5-15)
  10. KS, 2011. Standard test method for unconfined compression test of soils, KS F 2314. (KS, 2011. 흙의 일축압축강도시험방법, KS F 2314)