개질 재생아스팔트 혼합물 사용에 따른 생애주기비용 분석 연구

Life cycle cost analysis(LCCA) was used for evaluating the total economic worth of several modified recycling asphalt concrete mixtures by analyzing initial costs and discounted future cost, such as maintenance of resurfacing costs, over the life of the project year. For simplicity, an analysis technique of the net present value in LCCA was chosen for making better investment decisions in terms of the percent usage of recycling aggregate for modified recycling asphalt concrete mixtures. Through the LCCA of modified recycling asphalt concrete mixtures as well as dense-graded asphalt concrete mixture, the performance reduction model of resurfacing was applied in order to take the reliable resurfacing cycles into consideration in this study. As a result, the 30% usage of recycling aggregate was found as the best decision up to the 40 years of roadway’s serviceability.