www.ijird.com December, 2021 Vol 10Issue 12 INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH & DEVELOPMENT DOI No. : 10.24940/ijird/2021/v10/i12/167291-405328-1-SP Page 10 Volumetric and Abrasion Loss Properties of Asphalt Mix Modified with Used Toner Ink 1. Introduction Globally, the world is striving towards sustainable development. Sustainability according to UN sustainable goals is the incorporation of economic, social objectiveness, and environmental health in order to establish a vibrant, healthy, distinct, and resilient infrastructures or communities for the present and future generations (REF). The use of waste has been identified as one of the ways to achieve sustainable infrastructures. Used toner ink (UTI) is a waste material from printers and copier machines, resulting from either toner production process or printing operation (Yildirim and Kennedy 2003; Notani and Mokhtarnejad, 2018). Leftover toner either in the production process or printing operation becomes waste and is used as landfill. Landfilling of these waste materials have been shown by Notani et al. (2019) to have serious adverse effects on the environment due to the presence of heavy and semi-heavy oxides found in them such as ferric oxide (Fe2O3) and Lanthanum (La), which usually result in aquatic toxicity. As harmful as it is, researchers have discovered that the ferric oxide is highly dense and thus, change toner-modified binder into multiple phases if high quantity is used. Also, it contains titanium dioxide (TiO2), mostly used in colour pigment. This allows for the resistance of asphalt binders to the adverse effects of high service temperature (Qian et al., 2019). Yildirim et al. (2004) in their work shows that addition of toner to asphalt results in increased stiffness that indicates a higher fluid resistance. Various properties of asphalt binder have been shown to be improved by the addition of waste toner. Some of which are: resistance to deformation due to high temperature, viscoelastic properties (Notani and Mokhtarnejad, 2018), fatigue resistance, increased binder viscosity (Zhang et al ., 2019; Pouranian et al ., 2020); aging (Notani et al., 2021), Moisture susceptibility (Notani et al., 2021). Though some previous studies have shown the effect of toner on asphalt binder and mix, very few have been able to determine the volumetric and moisture susceptibility of asphalt mix modified with UTI. Therefore, this study considered the volumetric and moisture properties of toner modified asphalt. ISSN 2278 – 0211 (Online) Dr. Tailat, Ola Yusuf Chief Lecturer, Department of Building Technology, Federal Polytechnic Ede, Osun State, Nigeria Dr. Oluwasola, Ebenezer Akin Chief Lecturer, Department of Civil Engineering Technology, Federal Polytechnic Ede, Osun State, Nigeria Afolayan, Abayomi Ph.D. Student, Department of Civil Engineering Technology, Federal University of Agriculture Abeokuta, Ogun State, Nigeria Abstract: The research centered on the effect of used toner ink (UTI) as bitumen modifier in asphalt mix as paving materials with respect to the volumetric properties and durability. In this research, UTI are proportioned into the asphalt binder for mixing the asphalt concrete in percentages of 2%, 4%, 6%, 8% and 10%. Marshall and Cantabro loss tests were carried out on the hot asphalt mix. All the percentage proportion of used toner added was evaluated with the following parameters: voids in the mineral aggregates (VMA), voids in total mix (VTM), voids filled with asphalt (VFA), Marshall stability, flow value, and specific gravity. It was observed that asphalt mix with UTI performed better under loading as the UTI in the asphalt mix increases. The highest Marshall stability was observed to be 32,352N at 6% UTI, also there is reduction in the optimum bitumen content as the UTI, which helps in reducing the amount of bitumen needed in the course of asphalt pavement construction. In respect of this research further asphalt pavement design can be modified to provide pavement that can be more sustainable and durable over a long period of time, thereby reducing the cost of asphalt mix production. Keywords: Used toner ink, asphalt, volumetric, durability, modified, moisture