Avaliação funcional do pavimento em trechos de via do município de Marabá - PA

Abstract

The paving is an important element within the highways infrastructure, especially by offering favorable conditions of bearing, comfort, safety, and economy to users. In Brazil, however, the functionality of the highway network pavements is compromised, owing to that more than half of its total extension assessed presents degradation problems. The wear causes occurred in the pavements may involve the action of agents such as temperature, water, and traffic, as well as errors or inadequacies in the design, execution or selection of materials for the highways works. In this context, this study seeks to accomplish a functional assessment of pavement in the urban highway in the county of Marabá–PA-containing Travel Generator Poles (PGV's) in its surroundings, with an emphasis on apparent pathologies, and to propose maintenance and rehabilitation measures of structures that were analyzed. The method of analysis used is the Pavement Surface Condition Functional Assessment, based on actions for data obtaining and elaboration of the diagnosis of a superficial condition of the flexible pavement of the highways that were studied. From the diagnosis accomplished, the Maintenance and Rehabilitation (M&R) proposition of activities was based on the National Department of Transport Infrastructure (DNIT) manuals and standards and on the Strategic Highway Research Program (SHRP) procedures, being aided by the Decision Tree method. As a result, a diagnosis of the surface condition of the Nagib Mutran Avenue pavement was obtained, identifying the occurrence of pathologies in asphalt and concrete coating, such as alligator leather cracks; sinking; cookware; defects in regular patches and interventions in underground networks; elevation; wear; spillage of material; deformation; polishing aggregates; among others. By means of the Decision Trees, Maintenance and Rehabilitation (M&R) activities were defined based on the Average Daily Volume (VMD) of the roads, the severity and extent of the defects found, which involved: asphalt sludge application; resurfacing; patch; superficial treatment; filling holes; among others. In this way, the research allowed to verify the surface condition of the flexible pavement of urban road with a considerable volume of traffic, besides the definition of corrective measures of the defects found. Thus, such information can be used as a technical subsidy for the decision-making of the bodies responsible for intervention in the local road infrastructure.