Abstract
In this study, the effective recycling use of the Heat Compressed Crushed recycled EPS (HCCE) is discussed as a material of rooftop gardening. Effectiveness of the geo-structure with the HCCE and the volcanic ash clayey soils for the geo-materials of the rooftop gardening is evaluated in terms of adjustment to water retentivity, the water permeability, and planting by the experiment. According to the experimental results, it is concluded that the best mixture ratio of HCCE is about 40%. In the same mixture ratio totally, the geo-structure that divides into the water retentivity layer and the water penetration layer is more suitable for geo-materials of rooftop gardening, comparing that consists of the mixture of HCCE with the volcanic ash clayey soils.
