Evaluation of asphalt porous mixture properties due to addition of Arenga pinnata and coconut fibers

Abstract

Abstract Traffic condition, as well as tropical climate condition in Indonesia, demands high care to produce water resistance based surface layer in the flexible pavement industry. Asphalt porous is one of various technologies that could become promising prospects in this regard. However porous asphalt features might result in lower ability of pavement to endure traffic load. Thus, this study tries to find solution to previously mentioned issue by adding natural fibers to porous asphalt mixture by measuring the permeability, binder drains down, and void in mixture. The natural fiber is known to have in own strength to endure tensile force, and among many natural fibers available, we choose two of the most abundant material in Indonesia, which are Arenga Pinnata fibers and Coconut fibers. The result in this study is the addition of Arenga Pinnata fibers, or Coconut fibers results in decrease of both permeability and binder drain down test value for 8% to 35% and 32% to 73% respectively while it increases the void in mixture.