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The Impact of Incorporating Medical Mask Waste Fiber on the Rheological Properties of Asphalt

Putra I Gusti Agung Ananda, Thanaya I Nyoman Arya, Ariawan I Made Agus, Ciawi Yenni

Ecological Engineering & Environmental Technology

2024

Vol. 25, iss. 9

109--115

The impact of incorporating medical mask waste fibers on the rheological properties of asphalt in the review of the asphalt stiffness modulus (E*) using the dynamic shear rheometer (DSR) tool needs to be done, to determine the improvement of asphalt rheological properties, so that the garbage from masks produced during the Covid-19 pandemic might be utilized as an additive for asphalt. The method used is laboratory experiments by adding mask waste fibers with variations in levels of 1%, 2%, and 3% to the total weight of asphalt and making a test specimen design. This test is conducted under three conditions: initial condition, rolling thin film oven test (RTFOT) condition, and pressure aging vessel (PAV) condition. In the initial condition, the asphalt stiffness modulus increased by 6–78% with 1% mask fiber, 39–148% with 2% mask fiber, and 70–253% with 3% mask fiber. The decrease in the asphalt stiffness modulus of asphalt with 3% mask fiber indicates higher asphalt temperature during deformation (rutting), with initial conditioning at 75.1 °C and RTFOT residual asphalt at 69.7 °C. Conversely, the large asphalt stiffness modulus (E*) value with 3% mask fiber suggests a tendency for earlier fatigue cracking at low temperatures, evidenced by the increasing asphalt stiffness modulus (E*) value during fatigue cracking in PAV residual asphalt conditioning at 26.0 °C. This study is limited to laboratory testing, so using mask fibers in asphalt requires long-term evaluation for real-world reliability. The research proposes using medical mask waste to improve asphalt’s rheological properties, potentially reducing environmental impact and enhancing performance. Initial results are promising, but further research is needed to confirm sustainability and effectiveness in practical applications.