Estudo do valor de serventia atual de pavimento flexível e do envelhecimento do ligante asfáltico removido : trecho entre os municípios de Crateús e Independência (BR-226/CE)

Abstract

The Northeast of Brazil is very dependent on major highways, which can influence economic development. In Ceará, in 2021, only 3.8% of the paved roads studied by CNT were classified as excellent, 3.5% as poor, 14.2% as bad, 50.8% as regular, and 27.7% as good. In the interior of the state of Ceará between the towns of Crateús and Independência, there is a part of BR226 with systematic problems such as fatigue cracking, potholes and rutting which worsen especially during rainy periods. This problem directly affects the service life and quality of the pavement. Thus, this work seeks to analyze the problems of this highway in the segment between the cities of Independência and Crateús, using the methods of Subjective Evaluation and Viscoelastic Study of the Recovered Binder. The data obtained point to the need for corrective maintenance, based on its poor to very poor classification, presenting defects such as cracks, potholes, deformation and seams. From the rheological studies it is possible to infer an increase in stiffness referring to its aging. In all rheological studies, the extracted asphalt binder showed a high aging, indicating that this is one of the reasons why the segment between the cities presents numerous damages.