Análise da influência da casca de ovo branco nas propriedades de argamassa

Abstract

The civil construction industry is one of the sectors that cause great environmental impact, as it consumes large amounts of natural resources and generates considerable volumes of waste. On the other hand, the civil construction industry has the capacity to reuse the waste generated both by itself and by other sectors. In recent years, several studies have been carried out seeking to insert industrial or non-industrial waste as alternative materials to mortar and concrete mixtures, with the aim of reducing construction costs and identifying sustainable alternatives to preserve the planet's natural resources. In this sense, the residue under analysis for this work is eggshell, a by-product generated in large quantities by the food and poultry industry. In this way, the objective of this work is to verify the influence of the partial replacement of Portland cement by powder of chicken egg shell residue, for the production of mortar. For this purpose, an experimental analysis was carried out with 4 mortars, one of reference with Portland cement, water, hydrated lime and sand and three other mortars that had Portland cement replaced by eggshell powder in the percentages of: 10%, 20% and 30%, verifying its influence in tests of consistency index, resistance to compression, tensile strength in bending and water absorption by capillarity, in accordance with current regulations. The research showed that the production of mortar with partial replacement of cement by eggshell waste is unfeasible, as the results showed little technical viability, since the replacement significantly decreases the mechanical resistance, in relation to the reference mortar.