2020 Volume 76 Issue 2 Pages I_269-I_277
Well-grained sand is generally used for the filter layer of permeable pavement, but non-woven fabrics are also used in some cases to serve as both a filter layer and a measure for preventing subgrade soil from penetrating the roadbed. According to previous research, non-woven fabric used for this purpose needs to have a unit weight of 200 g/m2. However, there are issues with this related to weight and ease of cutting in the surrounding areas of the road.
In this study, non-woven fabric with reduced unit weight was fortified with claf and subjected to damage testing using a roller compactor testing apparatus to evaluate its durability, then the level of performance required for this surface-reinforced non-woven fabric was examined based on the road surface properties in a field test at an actual construction site. Based on the durability indicated by sample damage testing and the results of the field test, a unit weight of 131 g/m2 is sufficient for achieving the required performance with a surface-reinforced non-woven fabric filter layer.
