Per: Thaís Pirovane Miguel (UENF), JONAS ALEXANDRE (UENF), afonso rangel garcez de azevedo (uff), Euzébio Barnabé Zelanato (uenf), Giovanni Bruzzi Guarçonir (uenf), Markssuel Teixeira Marvila (uenf), Sergio Neves Monteiro (ime)
Abstract:
Civil engineering, with its works and constructions, has a major impact on the environment, both in terms of withdrawing its natural inputs as raw material, such as sand for example, and in causing various environmental problems, such as soil pollution, atmospheric pollution, contamination of rivers, and numerous other problems. Parallel to this, industries in various sectors have been generating more and more solid waste, which causes high costs for proper disposal, and therefore, are often discarded in the environment, which entails numerous damages to this. Thus, the present work has the objective of evaluating the water absorption by capillarity and density of cement and lime mortars for laying blocks and covering walls and ceilings, with replacement of sand by ornamental rock residue, in different percentages. The ornamental rock residue was collected in wet mud form, directly in the processing parks. In the laboratory, the residue was properly treated for use in mortars, the sand was sieved - # 10 the Hydrated Lime used was type III (CHIII) and Portland cement type II (CPII). The amount of water in each trace was determined by the consistency test. A reference trace (1: 1: 6 by volume) was performed. Then, traces of sand substitution by residue in 20%, 40%, 60%, 80% and 100% were used for the production of prismatic specimens (40 x 40 x 160 mm). The prepared specimens were submitted to capillary water absorption tests. The results showed that, as expected, the residue fulfills the role of effect filler in the mortar by up to 40% of substitution, being, therefore, the ideal trait of increment of residue, with its improved properties
