ABSTRACT
Fiber-reinforced asphalt overlays are a promising technology to rehabilitate rigid pavements. Based on laboratory results, they improve reflective cracking performance, thus increasing the service life of the road. However, research is needed to determine if their advantages overcome the drawbacks of having to produce a new additive. In this paper, a Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA) were performed to determine the minimum service life extension needed for fiber-reinforced overlays to be considered sustainable. According to the results, the economic aspect is more restrictive, and fibers need to increase the service life of the layer by at least 8% to obtain an economic benefit.
