Estudo de caso da viabilidade econômica de determinados tipos de manutenção do pavimento flexível em uma via da zona urbana de Alegrete – RS

Abstract

This paper presents a case study of the economic viability of different types of maintenance or proposed systems for certain street the urban area of Alegrete-RS, being: the method used by the City Hall which included the milling services and asphalt resurfacing in the stretch under study the route in question; and the proposed system of interlocked floor concrete blocks. In this work we used the methodology is to identify the economic viability of a flooring system wich can be deployed to combat pathological manifestations in flexible pavement particular street as well as advantages in the application of the repair method that can be applied in comparison the method adopted by the City Hall in case study. The study was based on the results obtained in 2013 using two methods of evaluation of the National Department of Transport Infrastructure for road pavements: Surface objective evaluation to determine the Global Severity Index and the surface of Subjectve Evaluation for obtaining Usefulness Current Value which proposed the interlocked flooring system.. The case study was carried out in the following way: Andradas Street, on a piece of 800 m long, was chosen for its representation in the urban area of Alegrete. The maintenance performed by the Municipality was less costly, even being held in a bigger portions because it was held in a stretch of 1.3 km, while the proposed paving interlocked concrete blocks covered 0.8 km. However, if the maintenance expenses values were compared in a 20-year time span (life of interlocked floor) for the same length of 1.3 km, the interlocked flooring system would have cost Uniform Annual Equivalent (CAUE) of R $ 62,704.00 while the maintenance performed by PMA present a CAUE of R $ 85,178.34, so the use of interlocked floor would prove economically viable. This paper describes the importance of planning and management of maintenance services on urban roads.