Avaliação superficial do pavimento flexível urbano e do sistema de drenagem pluvial de um condomínio residencial – Estudo de caso.

Abstract

The evaluation of the surface and structural conditions of flexible pavement base and sub-base layers involves analyzing the current state of the pavement, identifying the stage of deterioration, and proposing interventions to repair detected pathological manifestations, thereby extending its service life. Flexible pavements are composed of an asphalt surface layer and base and sub-base layers, each designed to perform specific functions such as protection against water infiltration, absorption and distribution of traffic-induced stresses, and provision of comfort, safety, and ride quality. Proper construction and maintenance of these layers are essential to ensure durability and satisfactory performance. A systematic evaluation process enables the implementation of preventive and corrective maintenance techniques, contributing to the preservation of pavement functionality and longevity. One of the essential aspects of pavement performance assessment is the analysis of the existing drainage system, particularly stormwater drainage, as adequate drainage prevents water accumulation and infiltration into pavement layers, which may lead to structural damage and the development of pathological manifestations such as cracks, fissures, deformations, depressions, surface detachment, and loss of load-bearing capacity. Drainage system components include surface and subsurface elements responsible for water collection, conveyance, and energy dissipation prior to discharge at the receiving point. Therefore, stormwater drainage systems play a crucial role in preserving pavement structure and extending its service life. This undergraduate thesis aims to present the results of a case study evaluating the surface condition of an 18-year-old flexible pavement located in a residential condominium in the city of Caldas Novas, Goiás, Brazil. The study presents analytical techniques and results related to pavement surface conditions, identified pathological manifestations, and an assessment of the stormwater drainage system, as well as corrective and intervention recommendations. The research includes a comprehensive literature review on flexible pavements, constituent materials, relevant pathological manifestations, Brazilian standards related to pavement performance, and the use of performance indices, culminating in the presentation and discussion of the case study results.