Per: Vinicius lemos pereira (Unifesspa - universidade federal do sul e sudeste do pará), beatriz cordeiro de bona (UNIFESSPA - UNIVERSIDADE FEDERAL DO SUL E SUDESTE DO PARÁ), isaac gabriel peixoto borges de oliveira (UNIFESSPA - UNIVERSIDADE FEDERAL DO SUL E SUDESTE DO PARÁ), ponnyk melo torres (UNIFESSPA - UNIVERSIDADE FEDERAL DO SUL E SUDESTE DO PARÁ), dilson nazareno pereira cardoso (ufpa - universidade federal do pará), lygia maria policarpio ferreira (UNIFESSPA - UNIVERSIDADE FEDERAL DO SUL E SUDESTE DO PARÁ), CLESIANU RODRIGUES DE LIMA (UNIFESSPA - UNIVERSIDADE FEDERAL DO SUL E SUDESTE DO PARÁ)
Abstract:
The inadequate allocation of construction waste generated through demolition, renovation and construction of works cause social and environmental impacts. Recycling is the most appropriate method for the reuse of such waste. In order to give purpose to these residues, the synthesis of geopolymers based on construction waste (red ceramic waste and cement residue) was developed using sodium hydroxide, alkali sodium silicate solution and water. Two formulations were produced for the production of the specimens, which were cured at room temperature and in an oven at 80ºC for 7 days. After the healing, tests of resistance to axial compression, water absorption by capillarity, apparent porosity and density were performed. The results showed a geopolymer with 22.47 MPa of compressive strength, 9.65% apparent water absorption, 16.45% apparent porosity and density of 1.70 g/cm³, for healing at 80 ° C, it being observed that when increasing the healing temperature, we increase the compressive strength of the obtained geopolymer. This demonstrates a potential for its use in the construction industry, as well as adequate waste disposal for this sector.
