RESUMOConstante é a busca por materiais ecoeficientes aproveitando-se do potencial dos co-produtos e resíduos do biodiesel. Por meio de uma produção viável, este trabalho teve por objetivo a agregação das partes aéreas do girassol ao cimento Portland CP IV formando um compósito. Realizado em três etapas que foram: caracterização de resíduos, processamento de corpos de prova e ensaios. Fabricaram-se corpos de prova como matriz (CM) e corpos de prova com substituição de 10% de massa de agregado por resíduo de girassol (CG). Na pesquisa foram realizados ensaios de granulometria com o resíduo, de resistência à compressão (NBR 7215), de finura do cimento Portland (NBR 11579) e de tempo de pega (NM 65). Os resultados obtidos permitiram concluir que o compósito CG está dentro dos parâmetros exigidos na NBR 5736 de eficiência do CP IV, somente não alcançando a resistência à compressão desejada de 30 MPa. Palavras-chave:Cimento Portland. Girassol. Compósito. ABSTRACTSearching for ecofriendly materials by exploiting the potential of co-products and waste from biodiesel has been constant. The goal of the present work was to aggregate the sunflower aerial parts into the Portland CP IV cement forming a composite through a viable production. The three steps performed were: waste characterization, specimens processing and essays. Specimens were manufactured as matrix (CM) and specimens made of 10% of sunflower waste (CG). It was accomplished granulometry, from strenght to compression (NBR 7215) of the waste material, fineness of the Portland cement (NBR 11579) and cement setting time (NM 65). The results showed that the composite CG is in accordance with the parameters required by NBR 5736 of CP IV efficiency however the parameter resistence to the desired compression of 30 MPa was not reached.
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