Avaliação do uso de resíduo de cerâmica vermelha como adição mineral em cimento Portland

Abstract

This work investigates the use of red ceramic waste as an addition to cement, aiming to promote sustainability in construction. CP II-F-32 cement was used to prepare the mixtures, evaluating replacement percentages of 10%, 25% and 30%. The mechanical properties were analyzed through compression tests carried out at 7, 28 and 90 days. The compressive strength at 28 days was 23.76 MPa for the mixture with 10% addition, resulting in a performance index of 107% in relation to the control mixture. For the 25% mixture, the resistance was 23.51 MPa, with a performance index of 106%. The 30% mixture had an average strength of 20.60 MPa and a performance index of 93%. All indices meet the requirements of NBR 12653 (ABNT, 2014), which requires a minimum physical performance of ≥90% at 28 days. ≥50%. It is concluded that red ceramic waste represents a viable and sustainable alternative for civil construction. Its compliance with the requirements of NBR 12653 (ABNT,2014) reinforces its potential as a pozzolanic material, aligning with sustainable practices and the circular economy.