The Utilization of Rice Husks Powder as an Antioxidant in Asphalt Binder

Abstract:

Aging is one of the main contributors for asphalt failure. Oxidation aging is the main cause of long-term deterioration in asphalt pavements as a pavement ages, oxidation stiffens a pavement, making it more susceptible to failure from load and thermal stresses. Slowing a pavement’s oxidative aging would maintain its elastic properties and delay aging problems. There is no performance enhancer in widespread use, acting as an antioxidant that slows the oxidative aging of asphalt binder. The main objective of this research is to investigate the feasibility of using biomass powder derived from rice husks as an antioxidant additive to control the asphalt age hardening. The waste of rice husks was dried at 40°C for 9–11 days. The dried materials was grounded, and sieved to get fine powder. To evaluate the performance of the antioxidant, samples have to be aged according to SUPERPAVE standards (RTFOT and PAV) and physical, chemical, and rheological properties have to be analyzed. The preliminary results of penetration test softening point test shows that adding 4% of rice husks’ powder to 80/100 binder didn’t change the grade of the binder.

• Periodical: Applied Mechanics and Materials (Volume 567)
• Pages: 539-544
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.567.539
• Online since: June 2014
• Authors: Mohammed Hadi Nahi*, Ibrahim B. Kamaruddin, Napiah Madzlan
• Keywords: Antioxidant Materials, Asphalt Bitumen, Lignin, Oxidation, Rice Husk

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