This paper investigates the use of ceramic waste powder in the partial replacement of Portland cement to produce concretes. The analysis of the pozzolanic activity of this mineral admixture resulted in an index of 76.9%. In order to study the behavior of the concrete, mixtures with 10%, 20% and 40% of cement replacement content were prepared. Compressive tests have shown an 11% strength reduction for the 10% replacement concrete, an 11% strength increase for the 20% replacement concrete and a 17% strength reduction for the 40% replacement concrete. Elastic modulus tests of the concrete mixtures have not shown any considerable variations, with an increase of just 8% for the concrete with 20% mineral admixture content. Minor variations in the physical properties of the concrete were observed with the introduction of the admixture. The concl;usion was made that the partial replacement of cement by the ceramic powder admixture at the levels studied caused no significant reduction in mechanical strength, stiffness or porosity in the concrete mixtures.
Ceramic waste powder; Pozzolanic mineral admixture; Portland cement concrete
