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Advisor(s)
Abstract(s)
Aiming to create alternatives for the disposal of sludge generated in wastewater treatment plants (WWTP) considering the circular economy principles and contributing to the reduction of environmental impacts generated by civil construction, the objective of this work was to evaluate the technical feasibility of the partial replacement of cement in the production of mortars by the sludge produced at the Bragança WWTP. The sludge was characterised, and different methods were used to prepare the sludge for the mortar. The sludge was incorporated by replacing part of the concrete mass of the mortar mixture. The specimens were tested for compressive strength. The specimen with 7% of sludge ash obtained the best result, the specimens with sludge from the drying-only treatments showed a result similar among themselves. The incorporation of the sludge resulted in mortars within the specification of the standard EN 998-1: 2018 and consequently have technical feasibility.
Description
Keywords
Sludge ash Sludge sun dry Mechanical strength WWTP
Citation
Martins, Ramiro; Pietrobelli, Juliana; Grabowski, Thais (2022). Partial replacement of cement by sewage treatment plant sludge in eco-friendly cement mortar. International Journal of Engineering Research & Technology (IJERT). ISSN 2278-0181. 11:1, p. 171-173