Avaliação das relações entre propriedades de forma de agregados, compactação, parâmetros do esqueleto mineral e textura de revestimentos asfálticos aeroportuários a partir do Processamento Digital de Imagens (PDI)

Abstract

This work aims to support the predic6on of macro and microtexture in the design phase of airport asphalt mixtures, rela6ng them to aggregates’ shape proper6es, compac6on methods, and mineral skeleton parameters. In order to do so, the use of Digital Image Processing (DIP) was validated using AIMS2, whose macro and microtexture evalua6ons were sa6sfactorily correlated with the Sand Patch test and the stone matrix surface tex-ture, respec6vely. Increasing the Compac6on Degree and using tandem rollers cause a reduc6on of the macrotexture, and an improvement in the mineral skeleton character-is6cs. In addi6on, laboratory compac6on can provide a predic6on of macrotexture in the field, but microtexture can be be$er predicted from the isolated analysis of aggre-gates’ surface texture, being necessary the development of correspondences between sta6s6cal and physical classifica6ons for so.