Optimising the Workability and Strength of Concrete Modified with Anacardium Occidentale Nutshell Ash

Strength failure persists both in structural and mechanical analysis. One of its prominent characteristics is the adequate provision for parameters that minimise or maximise strength objectives while satisfying boundary conditions. The previous optimisation concrete usually neglects mix design mechanisms induced by optimisation. Recent efforts to accurately optimise compressive have factored some these mechanisms. However, optimising modified with high silica alumina precursors, crucial factors are rare. Consequently, this paper optimised workability strength, incorporating binding, water/binder ratio, binder/aggregate curing using Box–Behnken approach (BBDA). A waste material, anacardium occidentale (cashew) nutshell ash, was valorised used at 5, 10, 15 wt.% cement. composites were made, cured tested 14–90 d. results revealed a precision between experimental slump 97% R2. In addition, 5% increase obtained compared target strength. Besides, correlation model equation from study predictions studies via BBDA yielded strong relationship.