A Performance Evaluation of Steel Fiber Reinforced Asphalt Mixture with Reclaimed Asphalt Pavement
摘要
The increasing demand for infrastructure development in Indonesia has put significant pressure on natural resources, particularly aggregates. To reduce the negative environmental effects and the dependency on virgin materials, the reuse and recycling of reclaimed asphalt pavement (RAP) has emerged as an alternate option. However, incorporating high RAP content often decreases the performance of asphalt mixtures. This laboratory research investigated on the potential of steel fiber reinforcement to enhance the performance characteristics of asphalt mixtures incorporating 60% RAP for the Asphalt Concrete Binder Course (AC-BC) layer. In order to determine the optimum composition for the Asphalt Concrete Binder Course (AC-BC) layer, an extensive laboratory examination was carried out, with steel fiber percentages ranging from 0% to 1.5% in increments of 0.25%. Despite some improvements in mixture characteristics, all mixtures exhibited excessive flow, therefore being unsatisfactory for AC-BC applications. These findings emphasized the need of further research for optimizing steel fiber utilization in RAP-based asphalt mixtures. Addressing the flow issue and determining optimal steel fiber contents will be necessary to maximize the sustainable use of RAP, contributing to the development of a more sustainable and resilient road infrastructure in Indonesia.