Desenvolvimento de metodologia para avaliação da adesividade agregado-ligante com o uso de processamento digital de imagem

Abstract

Adhesiveness at the aggregate-binder interface of asphalt mixtures is an important property to be evaluated in order to prevent moisture damage in asphalt pavements. In Brazil, one of the standards to analyze this property is the test Coarse Aggregate: Deter-mina5on of bituminous coa5ng (NBR 12583-2017), which provides qualita5ve results (sa5sfactory or unsa5sfactory). This research aims to develop a methodology using dig-ital images processing from smartphone that allows the determina5on of the percent-age area of the aggregate covered by the asphal5c binder. Thirty-seven images were analyzed for the calibra5on, and five common images of known dimensions were used for comparison with the areas obtained in the present methodology. The results indi-cated that it is possible to quan5fy the aggregate area covered by the binder along with the iden5fica5on of outliers. It is shown the poten5al of the methodology which can be implemented in the short term, given the dura5on and accuracy of the procedure. This may help in the characteriza5on and adequate selec5on of materials for use in the as-phalt paving industry.