Avaliação do comportamento mecânico do material fresado misturado com aglomerantes e adições minerais

Abstract

The vast majority of Brazilian highways is in critical use, not providing safety and comfort for the users and this fact shows the deficit of alternative actions to restore the functionality of the roads. Thus a positive application for the recycling of pavements scenario where it becomes appropriate reuse of the material that is removed from the highways when carried out their maintenance arises. This study evaluated the increase in tensile strength of the milled material with mineral additions for the application of layers of base and sub-base pavements. Assays were performed in the Laboratory of Geotechnical and Pavement and Materials Laboratory Construction, both of Unipampa – Campus Alegrete. The milled material is from a stretch of the BR-290 near the city of Rosario do Sul and cylindrical specimens were cast with dimensions 10 x 5 cm to perform the test of tensile strength by diametral compression. The additions of binders were performed at different levels. From the results set the mixture with highest resistance, comprising 80% of the milled material, 20% stone powder, 5% cement and 5% of the rice hull silica, asserting the feasibility of applying layers floor.