Browsing by Author "Mugume Tyson"

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    Assessing the Stiffness Properties of Asphalt Concrete Modified With Waste Diesel Engine Oil. Acase Study of Kampala- Masaka Road
    (Uganda Christian University, 2025-04-24) Mugume Tyson
    This research explored the modification of 50/70 penetration grade bitumen with waste diesel engine oil (WDEO) to enhance asphalt concrete properties for the Kampala-Masaka highway. The highway exhibits significant pavement deterioration, especially cracking, potentially caused by heavy traffic loads and temperature variations, which necessitates improved pavement materials. The study aimed to assess the impact of DWEO content on stiffness and workability by blending bitumen with DWEO at ratios of 0%, 2%, 3.5%, 4%, and 6%, and subjecting the mixtures to physical and mechanical tests. The 3.5% DWEO blend demonstrated the most favorable performance. Key findings from Marshall and Volumetric Analysis indicated a 22% improvement in stiffness and a 17% improvement in workability with DWEO modification compared to the control. This suggests that incorporating DWEO enhances the asphalt's resistance to cracking and deformation, addressing the observed deterioration issues. While DWEO modification shows promise for improving asphalt properties, further research is recommended to thoroughly address observed stability issues. Optimization of DWEO content is crucial to achieve a balance between improved stiffness and workability and ensure long-term pavement performance and durability on the Kampala-Masaka highway.