• Title/Summary/Keyword: geofoam

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Analysis of Time-Dependent Deformation of Expanded Polystyrene (EPS) Geofoam as a Flexible Pavement Subgrade Material (연성포장의 노반재료로써의 EPS 지오폼의 시간의존적 변형 분석)

  • Park, Ki-Chul;Ramaraj, Babu;Chang, Yong-Chai
    • Journal of the Korean Geosynthetics Society
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    • v.9 no.3
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    • pp.57-65
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    • 2010
  • The main objective of this study is to investigate the time-dependent deformation of EPS blocks under repeated loading conditions which is the one of the flexible pavement structure. The study comprised of both the experimental work and analytical modeling in order to understand the behavior of EPS blocks under repeated loading. The analytical modeling included the selection of a suitable model for describing the deformation behavior observed under repeated loading conditions, investigating the relationship among the unit weight, deformation and applied stress, analyzing the effect of repeated load on deformation. The test results were compared with the Findley's theory and model analysis with the results of this research under repeated loading conditions. Both Modified Findley's model and the proposed model can be adopted to illustrate the deformation behavior of EPS blocks under repeated loads.

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