Avaliação do estado fresco de argamassa mista de revestimento com substituição da cal por resíduos de cerâmica vermelha

Abstract

Influenced by the environmental impact of the inappropriate disposal of red ceramic brick waste (RCBW) on the environment and by the high CO2 emission content associated with the production of lime, the objective of this paper is to evaluate the fresh state of mixed mortars with the replacement of lime by RCBW. The substitutions were made at the level of 20%, 40% and 60%, in addition to a reference trait. The tests applied to each mortar were: consistency index, squeeze-flow, water retention, density, incorporated air level. The results obtained show improvements in some properties, with the level of 40% having the most satisfactory results, despite the reduction of the plastic zone of mortars with the replacement of lime by RCBW.