Análise da influência do tipo de base no desempenho de pavimentos flexíveis

Abstract

The present research arises from the need to investigate the performance of asphalt concrete pavements implemented on cobblestones of paved roads in the city of Alegrete - RS regarding their quality. The study aims to compare pavements implemented on cobblestones and on a single graded gravel base (BGS). The paving of public streets is important to create better quality of life in all its different aspects: comfort, cleanliness, safety and economy in transport. The choice for this context is justified by the recognition that the paving projects of the city of Alegrete in many situations are carried out by placing the layer and asphalt concrete directly on old cobblestone pavements. After carrying out the study, it became clear that some pavement defects are directly linked to the quality of the roads, however a direct relationship between the type of base and the performance of the roads was not verified. The difficulty in correlating or refuting the type of base in pavement defects is due to the variables found (execution time, shipment, previous and current material of the lower layers). However, even without a direct relationship, it was possible in some places to observe defects that may be associated with the cobblestone base. Keywords: Paving. Pavement defects. Cobblestone roads.