Optimization of fibre reinforcement for waste aggregate cement composite

Fibre reinforced cement composites (FRCCs) created on the basis of waste ceramic aggregate (WCA) were mixed, cast into specimens and tested. There were harnessed steel and polymer fibres to modify cement matrix and the total volume of fibres was equal to 1.2% and fixed for all mixes. The research programme was prepared with the help of experimental design and integral simplex design was employed for optimization. Achieved results were presented in a form of contour ternary plots. Apart from investigation of basic properties of SFRCC such as workability, density and ultimate compressive strength there were performed full tests according to European Standard EN 14651. Calculated values of fLOP strength and values of four different residual strengths (fR1, fR2, fR3, fR4) allowed to classify tested FRCC according to fib Model Code 2010 and assess their structural aptitude. The main aim of the research programme was optimization of the composite’s mechanical properties regarding different fibre reinforcement.