OPTIMIZATION MODELING OF COMPRESSIVE AND FLEXURAL STRENGTH PROPERTIES OF SELF-COMPACTING CONCRETE INCORPORATING CERAMIC TILE POWDER USING TAGUCHI METHOD AND GENE EXPRESSION PROGRAMMING

The concern for environmental issues has brought about the incorporation of ceramic tile powder (CTP) as an additive on the mechanical properties of self-compacting concrete (SCC) in this research. The optimization method explored in this study is Taguchi L9 technique, which was employed to optimize the applied process parameters that involved CTP, water-to-binder (W/B) and superplasticizers (SP). The percentages of CTP added were 0.0%, 10.0 %, 12.5% and 15.0 % of the cement mass. Three levels were assigned to three parameters of CTP, W/B ratio and SP each in the L9 ( ), Taguchi mixed level orthogonal array, as the design of experiment (DoE). The flowability of the fresh SCC properties was mostly VS2 class, with compressive strength (CS) value of 28.27N/mm2 and flexural strength (FS) value of 5.64N/mm2 obtained from Taguchi optimization method. Gene expression programming GEP was used to obtain model for the compressive strength (CS) and flexural strength (FS) parameters. The study concludes that CTP has a significant effect on the mechanical properties of SCC at 12.5% and SP at 1.5% replacement