廢아스팔트의 透水性 鋪裝材料로서 再活用 可能性에 關한 硏究

Abstract

With dramatic advance of national economy, generations of every kind of wastes, industrial waste, pollutants, etc. are on the rise, while the total generation of construction wastes in Jeju-do for 2009 was around 900 thousand tons per year, a 46% increase compared to the previous year's around 617 thousand tons. Of these, as to waste asphalt, 2009 generation was 224 thousand tons per year, a 77% surge compared to the previous year's 127 thousand tons. Also coming to the fore is the exhaustion of natural aggregate resources together with social and environmental problems. As for building a bike road or pedestrian road for making low-carbon green growth city, it is time that R&D on porous pavement material was required because of the need for constructing the eco-friendly road resistant to localized heavy rain. Thus, reusing the waste asphalt for porous pavement material rather than the existing simple use for producing recycled asphalt would reduce environmental problems, maximizing the usage of cycle aggregate. In this study, to review the possibility for waste asphalt cycle aggregate to substitute for ordinary fine aggregate, its physical and chemical characteristics were analyzed. As the result, waste asphalt cycle aggregate revealed little difference from the ordinary fine aggregate in characteristics with no particular impeding elements found. So cycle aggregate from waste asphalt is considered usable for ordinary fine aggregate. Besides, compressive strength test, permeability experiment and porosity experiment were conducted to analyze the dynamic characteristics of porous pavement material using cycle aggregate from waste asphalt and the strength required as a structure. The result was considered safely available for porous pavement material. This content corresponds with "constructing activated infrastructure involving the use of bike and building an eco-friendly road resistant to localized heavy rain" of the items under "practical tasks responding to climate change for making a low-carbon green growth city", which is currently being pushed for by local governments. So it could be used as an alternative plan for this.