Per: MARKSSUEL TEIXEIRA MARVILA (uenf), Afonso Rangel Garcez de Azevedo (uenf), Jonas Alexandre (uenf), Euzébio Bernabé Zanelato (uenf), Victor de Souza Barbosa (redentor), Thuany Espirito Santo Lima (uenf), Sergio Neves Monteiro (ime), Gustavo Castro Xavier (uenf), Niander Cerqueira Aguiar (redentor), Carlos Maurício Fontes Vieira (uenf)
Abstract:
The study of the properties of mortars in the fresh state, although neglected by some researchers, is extremely important to understand the performance of mortars. In this context, the objective of this work was to evaluate the properties of the fresh state, such as consistency, water retention, mass density in the fresh state and incorporated air content, in mortars 1: 1: 6 (cement: hydrated lime: sand), using the incorporation of gypsum residue from civil construction at levels of 0%, 20%, 40% and 60% as a substitute for sand. It was proven that the residue acts by reducing the content of incorporated air, and consequently increasing the density in the fresh state, and it acts by increasing the water retention and the need for water in the consistency test to maintain the same workability parameters, due to the nature hygroscopic residue. Thus, to maintain the parameters in coherent limits, defined by bibliographic consultation, it is possible to use 20% of civil construction plaster residue in mortars, proving the effectiveness of the assessment of the fresh state study and also the feasibility of applying the residue