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.

The Influence of Moisture on the Performance of Polymer Fibre-Reinforced Asphalt Mixture

“…Both stripping and softening can occur in the same mix [3]. Stripping is the physical separation of the bitumen and aggregate produced by the loss of adhesion between the bitumen and the aggregate surface primarily due to the action of water or water vapour [4]. It is an aggregate interfacial phenomenon and induces the loss of stability in the bituminous mix that in turn promotes failure [1,5].…”

Greener Solution to Waste Corn Stalks and Shortage of Asphalt Resource: Hydrochar Produced by Hydrothermal Carbonization as a Novel Performance Enhancer for Asphalt Binder

“…Differently, Araújo et al developed a polyester obtained from sugarcane bagasse-derived polyol through pyrolysis, which was polymerized with pyromellitic anhydride, as new additives for binder [15]. There are several studies investigating the potential of applying ashes from biomass combustion as aggregate fillers for asphalt mixtures [16][17][18], antioxidant [19] or performance enhancer [20] for asphalt binder. Specifically, Chen et al invented a preparation method of corn stalk fiber involving sodium hydroxide [1] and evaluated the effect on binder [21].…”

How Organic Waste Improves Bitumen’s Characteristics

“…In order to limit oxidation, specific additives are added to the bitumen before the mixing process. On the market, there are no eco-friendly additives [14,15] and so recent attention is being paid to ecological additives with high performance in order to reduce the oxidation process [16][17][18].…”