Incorporação de biomassa proveniente do processo de fitorremediação em concreto para pavers

Abstract

Contamination of water by heavy metals has been a subject matter that concerns researchers and government agencies involved in water quality and pollution control. About that, aquatic macrophytes have often been used in research as bioindicators of water quality. However these plants need to be removed from the aquatic environment, due to its fast reproduction. Besides, they cannot be discarded inadequately, mostly when there is some contamination. For this, it was studied the possibility of using its biomass as addition to concrete. Thus, the aim of this work was to use Pontederia parviflora Alexander as a phytoremediate agent and the verification of the viability of using its biomass incorporated to the concrete for the production of pavers. Concrete with 0%, 2.5% and 5% biomass addition from phytoremediation were produced. The evaluated properties were the workability, the water absorption and the compressive strength. The results obtained for the compressive strength and the water absorption showed that the P. parviflora biomass incorporate in concrete is not viable for pavers production.