Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
권호 표지

Analytical Study on Resilient Modulus Model of Expanded Polystyrene(EPS) Geofoam as a Subgrade Material in Flexible Pavement

연성포장에서 노상재료로서 EPS지오폼의 회복탄성계수의 모델에 관한 분석적 연구

  • Published : 2012.09.01
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Abstract

The main objective of this study is to develop an analytical model for the resilient modulus of EPS geofoam when it is applied for flexible pavement as a subgrade material. This analytical model has been developed based on the results from triaxial compression tests. And this model can be used to analyze the flexible pavement structure using the finite element method by developing a program or modifying an existing program for any desired purposes. The results of this study show that the EPS geofoam as a replacement material for subgrade in flexible pavement is a feasible alternative to natural weak soils.

본 연구의 주된 목적은 EPS지오폼이 연성포장의 노반재료로 사용될 때 그것의 회복탄성계수를 해석 모델화 하는 것이다. 이 해석모델은 삼축압축 시험으로부터 나온 실험결과를 토대로 만들어졌다. 그리고 이 모델은 원하는 용도에 따라서, 기존의 프로그램을 수정하거나 새로 개발하여 유한요소법을 이용한 연성포장구조를 해석하는데 사용될 수 있다. 또한 본 연구의 결과는 연성포장에서의 현장 연약지반 노상재료의 대체물로서 EPS지오폼은 적합한 것으로 확인되었다.

Keywords

References

  1. AASHTO (2003), Determining the Resilient Modulus of Soils and Aggregate Mateerials, American Association of State Highway and Transportation Officials Designation T 307-99, pp. 1-29.
  2. Asphalt Institute. (1982), Research and Dvelopment of the Asphalt Institute's Thickness Design Manual, 9th edition. Research Report No. 82-2, Lexington, KY, USA, pp. 60-75.
  3. Carmichael, R. F. and Stuart, E. (1978), Predicting Resilient Modulus: A Study to Determine the Mechanical Properties of Subgrade Soils, Transportation Research Record 1043, TRB, National Research Council, Washington, D.C., pp. 20-28.
  4. Elliot, R. P. and Dennis, N. D. (1998), Permanent Deformation of Subgrade Soils. Report MBTC FR-1069, Arkansas Highway and Transportation Department, Little Rock, Arkansas, pp. 32-42.
  5. Heukelom, W. and Klomp, A. J. G. (1962), Dynamic Testing as a Means of Controlling Pavements during and After Construction, Proceedings of the 1st International Conference on Structural Design of Asphalt Pavements, University of Michigan, pp. 223-232
  6. Horvath, J. S. (1995), Geofoam Geosynthetic, Horvath Engineering P.C, N.Y., pp. 33-58.
  7. Huang, Y. H. (1993), Pavement Analysis and Design, Prentice Hall, New Jersey, pp. 316-333.
  8. Park, K. and Chang, Y. (2011), A Feasibility Study on Resilient Modulus of Expanded Polystyrene (EPS) Geofoam as a Flexible Pavement Subgrade Material, Korean Geo-Environmental Society, Vol. 12, No. 12, pp. 63-70.
  9. Raad, L. and Figueroa, J. L. (1980), Load Response of Transportation Support System, Transportation Engineering Journal, ASCE, Vol. 106, No. TE1, pp. 111-128.
  10. Stark, T. D., and Arellano, D. (2004), Guideline and Recommended Standard for Geofoam Applications in Highway Embankments, NCHRP Report 529, Journal of Transportation Research Board, pp. 7-12.
  11. Ugural, A. C., and Fenster, S. K. (1995), Advanced Strength and Applied Elasticity. Prentice-Hall, Inc., Upper Saddle River, NJ, pp. 68-86.