Estudo comparativo das cinzas provenientes da Usina Termelétrica do Pecém com outras cinzas existentes no Brasil e no exterior, no cenário da construção civil

Abstract

Particularly for environmental reasons, many professionals seek the use or reuse of waste from other construction or industrial processes. One of these residues is the ash from burning coal. This ash can be classified as a fly ash or bottom ash. In recent years, the search for efficient uses of these ashes in the middle of civil construction has been increasing. However, there is still much waste and poor disposal of this waste. In order to find possible new uses for ash from the Pecém Thermal Power Plant in Ceará, samples were first collected for characterization. Then, through a literature review, we selected studies that used ashes, both fly ashes and bottom ashes, in the area of civil construction.With characteristic data of these two ash groups, a comparative study was carried out to verify the similarity between the ashes. After these similarities were verified, it was determined whether or not it was possible to use Pecém ashes in these selected studies. There were, altogether, selected 30 articles, 15 for each type of ash. Of these, 8 fly ashes and one bottom ash were determined as similar with the ashes from Pecém. However, of these ashes, 6 possible uses for local fly ash and no possible use for local bottom ash were found.