Evaluation of Volumetric Properties of Cassava Peel Ash Modified Asphalt Mixtures

In continuance to providing a reliable and cost-efficient road construction material that would aid the development of sustainable pavements while also eradicating agricultural wastes protect environment, Cassava Peel Ash (CPA) modified asphalt mixture is seen be one most viable options. This study aimed determine suitability in hot mix for improved pavement performance. Using response surface methodology, central composite design was employed parameters, namely coarse aggregate (CA), fine (FA), mineral filler (MF), bitumen content (BC), cassava peel ash (CPA). CPA used as partial replacement varied between 0% 20%. The BC 4% 8%, MF 15% 20%, FA 10% 14%, CA 46% 52%. interactive effect parameters on volumetric properties mixtures evaluated. results obtained showed Marshall stability, flow, density, volume void, void aggregates at 1.8037–8.045 kN, 2.7-8.22 mm, 2.0426–2.3909%, 1.094–7.966% 55.5105–93.1393% respectively. These indicate interaction CA, FA, MF, BC, influences mixtures. From RSM analysis, prediction model an optimal condition 4.018% content, 20% ash, aggregate, were achieved Doi: 10.28991/CEJ-2022-08-10-07 Full Text: PDF