VOLANT ASH AS AGGREGATE IN MECHANICAL PROPERTIES OF COATING MORTAR

Abstract

Civil construction is an important sector of industry and is considered as one of the main factors of economic and social growth in Brazil. It therefore immediately reflects certain aspects of the country's economy and indicates the rates of progress and setbacks. In this scenario, certain recycling alternatives are presented for the construction industry, one of which is derived from the processing and industrialization of wood production, in which waste makes up a firing mixture for the ceramic industries to use in the manufacture of ceramic blocks and fly ash from this process can then be used as a partial replacement in the coating mortar. The evaluation was carried out by producing traces with different percentages of replacement of the natural kid aggregate by fly ash. For the study, Portland cement CP II Z, class 32 and hydrated lime CH - III, and natural sand were used as binder materials. The trace of the mortars was 1: 2: 8 and the replacement of the small aggregate by the ashes was 0%, 15%, 25% and 50%. The results obtained were satisfactory, concluding that the use of fly ash in mortars is feasible for applications coatings and also a method of proper disposal and less aggressiveness to the environment.