Effects of ultraviolet exposure on physicochemical and mechanical properties of bio-modified rubberized bitumen: Sustainability promotion and resource conservation

Promoting the use of scrap tire rubber and bio-modifiers in outdoor construction such as road pavements requires an in-depth understanding their resistance to solar radiation which causes premature aging constructions. Aging changes bitumen's colloidal stability, increasing content asphaltenes, decreasing aromatics progresses. Bitumen's during include oxidation, aromatization, chain scission, carbonization, alter chemical, physical, mechanical properties. Here, we examine how exposure ultraviolet physicochemical properties bio-modified rubberized bitumen (BMR) containing various bio-modifiers. To do so, specimens from castor oil (CO), corn stover (CS), miscanthus (MS), wood pellets (WP), waste vegetable (WVO) were examined before after they exposed for 50, 100, 200 h. The study results showed that abovementioned bitumens caused by was highly dependent on source bio-modifier. highest CO-BMR WP-BMR, followed WVO-BMR, CS-BMR, MS-BMR. This attributed presence unsaturated groups CO WP, acted sacrificial agents. In case improvement can also be high furfural. It should noted furfural has been used a specialty antiaging chemical industry. outcomes help manufacturers select modifiers enhance its UV promote sustainability construction.