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National design standards concerning geomembrane surface linings for dam and reservoirs demand appropriate countermeasures against predicted deformation in foundation ground due to climatic and geologic conditions. However, the ratio of cost for countermeasures compared to the entire construction cost is generally large. Therefore, it is necessary to elucidate the flexibility of geomembranes to foundation ground deformations in order to make the countermeasure low-cost. In this paper, the flexibility of geomembranes to foundation ground deformations caused by frost heaving was examined in the laboratory. The results confirmed that EPDM geomembranes don't require replacement of ground soil to the depth of frost penetration with the generally adopted method of macadam.
国際ジオシンセティックス学会日本支部の論文