Avaliação superficial de pavimentos através do método IGG (Índice de Gravidade Global) estudo de caso em um trecho na Av. Moxotó em Paulo Afonso – Bahia

Abstract

The condition of the road pavement is directly related to the performance of the road modal and the Brazilian economy, as these characteristics can cause financial and environmental losses on a high scale. Therefore, a road that presents pathologies, increases the operational cost of transportation and decreases the comfort and safety of passengers. The work, therefore, has the objective of surveying the defects of the asphalt pavement, applying the IGG method (Global Gravity Index). This method aims to reach a numerical value for the condition in which the pavement is presented, whose index ranges from 0 (excellent) to 160 (very bad).. The IGG assesses the occurrence of defects in the analyzed sections. It is a combined fault index that allows us to classify a section of the pavement, due to the occurrence of surface defects, assigning a concept of pavement condition as a function of the value found. The evaluation of the condition of the pavement establishes other possible methods of application, and in this work we chose the IGG. Seeking to evaluate a pavement on a given stretch of a 2 km road, the present work was applied to a road extension, on Avenida Moxotó, in Paulo Afonso, Bahia. It has become essential to describe the types of pathologies that occur on pavements. Dividing the section into tracks 1 and 2 and also into sections, the defects were surveyed as indicated by the chosen method. With the data described, the Global Gravity Index value of track 1 was reached at 148.4 and 129.4 in track 2, both classified as bad pavement to later know which types of maintenance are essential for the road. The method pointed to a bad condition of both lanes. Significant defects were found in the section under study, such as long longitudinal cracks (TLL), long transverse cracks (TTL), “alligator leather” interconnected (J), plastic sinking (ATP), patches (R), pans (P) and wear (D). Based on the results and high degree of degradation in wich the floor is found, there is a need for restauration.