MODELLING AND OPTIMIZATION OF LOCUST BEAN POD ASH CONTENT IN ASPHALT MIXTURE USING SURFACE RESPONSE METHODOLOGY. FJS [Internet]. 2023 Dec. 27 [cited 2025 Sep. 12];7(6):76-85. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/2055