Lian, Chong. Hydraulic conductivity and material properties of pervious pavers with special upper layer. Retrieved from https://doi.org/doi:10.7282/T34J0J0G
DescriptionPervious pavement is a new type of pavement made of porous material. There are a lot of connected pores inside the pervious pavement material. Permeability of the pervious pavement is much higher than conventional, impervious pavement. The higher permeability of pervious pavement can effectively improve urban drainage as well as water environment. Rain water falling on the permeable pavement can penetrate down into ground to reduce volume of runoff as well as filter out contaminants in the runoff. But most of the ordinary pervious pavement has some drawbacks. Compressive strength of the ordinary pervious pavement is typically lower than that of the impervious pavement. The pores within the ordinary permeable pavement are easily blocked by particulate matter and then the infiltration capability will be reduced. There is a special pervious pavement whose upper surface has a low porosity, dense layer. The advantages of this permeable pavement are: (1) the upper layer, though dense, still has a relatively high permeability, and (2) the dense upper layer can prevent or minimize the amount of sediment entering the pavement. The hydraulic conductivity of the pervious paver samples were tested in this thesis research. The porosity of the pervious paver samples and the strength of the samples were also tested in this research. The results of these laboratory tests were subsequently analyzed. The advantages and disadvantages of the special pervious pavement were evaluated, and the implications for field applications were discussed.