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An Analytical Study of Flexible Pavement Design Using Resilient Modulus Model of Expanded Polystyrene (EPS)

EPS 회복탄성계수 모델을 이용한 연성포장설계의 해석적 연구

Ki-Chul Park1
,
Yong-Chai Chang2*
박 기철1
,
장 용채2*
1Director, Division of Civil Engineering, Munchang Co, Ltd.
2Professor, Dept. of ocean·plant civil Engineering, Mokpo National Maritime University
*교신저자. *Corresponding Author. 
30 June 2015. pp. 35-44
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Abstract

The resilient modulus model of EPS geofoam to be used for a flexible pavement design was developed. In this study, the model was applied to design the flexible pavement and to predict the magnitude of the deformation of EPS geofoam blocks as a subgrade in the flexible pavement structure by using the resilient modulus model of EPS geofoam (RMEG) program. The RMEG program presented how much the EPS geofoam subgrade settled over the designed duration and the AASHTO flexible pavement design equation with the resilient modulus of EPS geofoam noted that how long the flexible pavement endured under traffic loads with 70% reliability for the estimated duration with less than 5mm vertical deformation during 20.6 years without the significant pavement distress as a substitute material for the natural soils.

Keywords
EPS geofoam
Resilient modulus
Flexible pavement
Subgradee

본 연구의 연성포장설계의 해석적 연구를 위해 연성포장설계에 이용되는 EPS 지오폼 회복탄성계수 모델이 고안되어 노상층이 EPS 블럭인 연성포장의 수직방향 변형크기를 예측하기위한 프로그램인 RMEG 에 이용되었다. RMEG 프로그램은 EPS 지오폼의 노상층이 설계된 기한동안 얼마나 침하 하는지와 AASHTO 연성포장설계방정식에 의해 평가된 신뢰도 70%로 주어진 교통하중에 도로구조체가 얼마나 오랫동안 심각한 도로파손 없이 지탱하는지를 보여주었다. 그 결과, EPS 노상층의 예측 수직변형은 20.6년 동안 5mm 이하로 EPS 지오폼은 일반토사의 대체물로써 하자가 없음을 나타냈다.

References
1
1.AASHTO (1993), AASHTO Guide for Design of Pavement Structures, Washington, DC, pp.1-23.
2
2.AASHTO (2003), Determining the Resilient Modulus of Soils and Aggregate Materials, American Association of State Highway and Transportation Officials Designation T 307-99, pp.1-29.
3
3.Bang, S. (1995), “Experimental and Analytical Study of Expanded Polystyrene Blocks in Highway Application”, Proc. of International Seminar on The Application of EPS for Embankment Construction, Seoul, Korea, pp.105-133.
4
4.Horvath, J. S. (1995), Geofoam Geosynthetic, Horvath Engineering P.C, N.Y, pp.106-156.
5
5.Huang, Y. H. (1993), Pavement Analysis and Design, Prentice Hall, New Jersey, pp.316-323.
6
6.Mannering, F. L. and Kilareski, W. P. (1998). Principles of Highway Engineering and Traffic Analysis. 2nd edition, John Wiley & Sons, Inc, pp.97-110.
7
7.Myhre, Q. (1995). “EPS-Materials Specifications”, Proc. of International Seminar on The Application of EPS for Embankment Construction, Seoul, Korea, pp.17-20.
8
8.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.
9
9.Ugural, A. C., Fenster, S. K. (1995), Advanced Strength and Applied Elasticity, Prentice Hall, New Jersey, pp.96-110.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 14
  • No :2
  • Pages :35-44
  • Received Date : 2015-05-12
  • Revised Date : 2015-06-18
  • Accepted Date : 2015-06-19
  • DOI :https://doi.org/10.12814/jkgss.2015.14.2.035
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