Exploring the Self-Healing Capability and Fatigue Performance of Modified Bitumen Incorporating Waste Cooking Oil and Polyphosphoric Acid

Bitumen’s self-healing capability is critical to the bitumen industry’s sustainable development. This work attempts examine property and fatigue behavior of using waste cooking oil (WCO) polyphosphoric acid (PPA) in modification. Different components WCO were mixed with PPA for initial The linear amplitude sweep (LAS) test was used evaluate modified bitumen. To assess extent healing after a fatigue-healing test, evaluation indicators, including life recovery (FLR), modulus (MR), dissipated energy (DER), selected. Meanwhile, radar chart analyze integrated performance WCO/PPA (WP)-modified Lastly, SARA fractions separated from modification mechanism. It observed that inclusion enhanced behavior. For 2% an intermediate component (IC) WCO, LAS prediction model showed extreme values, increase 669% over virgin Regardless concentration, considerable FLR, MR, DER seen processed IC compared Additionally, as time extended, increment bitumen’s indicators higher than results indicated adding changes soluble state gel state. An innovative approach has been proposed promote development within industry.