Estudo sobre a utilização de dope em misturas asfálticas tipo Cauq no maranhão

Abstract

This study aimed to evaluate the use of DOPE as an additive in CAUQ type asphalt mixtures on roads in the state of Maranhão, which has used aggregates with unsatisfactory adhesiveness, questioning the reliability of the coatings executed. Initially, we sought to base the study through a bibliographical survey on the different aspects of pavement, types and classification of pavements, asphalt and aggregates. Laboratory tests were then carried out to characterize and classify the materials using widely recognized standards and test methods. The materials used in this study come from local companies engaged in road paving services. Test bodies with different binder contents were made in order to determine the optimum design binder content, further blends were then made using the optimum binder content with and without addition of DOPE and then subjected to assay mixtures tensile strength by diametrical compression, Cântabro test and induced moisture damage test. All the results were compared to the requirements of the cited standards. In this way it was concluded that the use of DOPE is a solution required to asphalt mixtures produced with aggregates with low adhesiveness to the binder, mainly improving its tensile strength