투수성 탄성포장재의 투수성 향상 및 친환경적 개발에 관한 연구

Abstract

The purpose of the study was to develope the environmental-friendly and permeability improvement of porous elastic pavement materials. First, the study analyzed porous concrete through the pore-clogging test by changing a size of coarse aggregate to look for a plan to extend life of permeability as well as to satisfy the intensity required to structure. As theresult, aggregate of 13mm, 19mm and 25mm satisfied the intensity required and had each 16 months, 48 months and 66 months in life of permeability. Therefore, aggregate of 25mm had the longest life of permeability. Second, in the elastic pavement layer with pore, a surface layer, the study analyzed heavy metals (Pb, Cu, Cd and Cr) removal effect by mixing four kinds of scoria by each color and one kind of basalt sludge with materials of elastic pavement layer to remove a pollution source of heavy metals happened at the time of running of rainfall. As the result, the study was analyzed in order of yellowish brown scoria > basalt sludge > black scoria > reddish brown scoria > dark gray scoria, but yellowish brown scoria is not enough in side of supply since it has a little reserves. Therefore, it is judged that basalt sludge is the most environmental friendly material which can have an effect of cost reduction and of the material cost reduction by waste treatment and an effect of environmental conservation and of a heavy metal pollution source's removal by recycling of waste matters. Consequently, it is judged that it is the most reasonable to use coarse aggregate of 25mm on the porous concrete layer and to make laying of the elastic pavement layer with pore by mixing basalt sludge on the surface layer.