Performance Evaluation of WMA Containing Re-Refined Acidic Sludge and Amorphous Poly Alpha Olefin (APAO)

The use of waste materials has been increasingly conceived as a sustainable alternative to conventional in the road construction industry, concerns have arisen from uncontrolled exploitation natural resources recent years. Re-refined acidic sludge (RAS) obtained material—acidic sludge—is an source for bitumen. This study’s primary purpose is evaluate resistance warm mix asphalt (WMA) mixtures containing RAS and polymeric additive against moisture damage rutting. modified bitumen studied this research mixture virgin 60/70, (10, 20, 30%), amorphous poly alpha olefin (APAO) polymer. To end, Marshall test, susceptibility tests (i.e., tensile strength ratio (TSR), residual Marshall, Texas boiling water), resilient modulus, rutting assessment dynamic creep, quotient, Kim) were carried out. results showed superior values compared control considering test. Moreover, probability reduction mixes’ was proved by sensitivity tests. that could improve mixtures’ permanent deformation its resilience modulus. Asphalt 20% (substitute bitumen) better performance all experiments among samples tested.