SUSTAINABLE TECHNOLOGICAL INNOVATION IN CIVIL CONSTRUCTION: SOIL-CEMENT BRICK WITH REUSE OF SLUDGE FROM A WATER TREATMENT PLANT

TIJOLO DE SOLO-CIMENTO COM REAPROVEITAMENTO DE LODO DE ESTACÃO DE TRATAMENTO DE ÁGUA

Abstract

This work aimed to present an empirical research on the production of ecological bricks from the use of sludge from a Water Treatment Plant (ETA). Sludge is a residue found in station decanters. It contains impurities retained in the process and that come from the abstraction water, its disposal takes place in sanitary landfills or water bodies, reducing the useful life of the first and contamination of the second. Thus, this research sought to use this sludge for an activity that generates value, contribute to sustainability and develop a low-cost product for the construction market. In the manufacture, a mixture of sludge and cement was used, with several traits, to later test the physical characteristics of the generated product. Throughout the process, ABNT NBR 10833:2012 and NBR 8491:2012 standards were followed to ensure product quality and market specifications. The bricks produced with mix 1 had a tension of 0.16 Mpa, with mix 2 of 1.51 Mpa and with mix 3 of 3.56 Mpa. After the analysis, it was determined that the appropriate trait was 2 because it had values as specified by ABNT and consumption of 4 parts of cement and 2 of sludge.

Keywords: Sustainability, Sanitation, Waste, Alternative materials, Costs.