Pavimentos de concreto com e sem armadura estrutural : cotejamento de atributos relativos a projeto, dimensionamento, construção e custos de implantação

Abstract

The most recent yearbook of the brazilian National Transport Confederation highlights the precarious situation of Brazilian roads and highways, where a large part of the paved network has previous defects. Thus, paving alternatives that provide greater durability to the pavement, with low maintenance requirements are sought. In this scenario, the Portland cement concrete paving has been gaining space, once it obtains the characteristics of durability, safety and economy for users, with minimal maintenance throughout the useful life of the pavement. It is sought to characterize, among the various options for concrete paving, two alternatives: simple concrete paving with transfer bars and structurally reinforced concrete paving. Therefore data of the BR101 restoration and duplication work in the state of Sergipe, in which simple concrete pavement with transfer bars were used. Verification of the design applied to the work and new design proposals for the option of concrete paving with structural reinforcement were carried out. The executive methods used in each pavement option were exposed and new execution budgets for the execution pavements were developed in order to determine the current costs of implementing each alternative. From the sizing carried out and budgets developed, it was possible to determine the implementation costs of each of the two paving options and to identify discrepancies between the cost compositions of services delivered in SICRO. It was concluded that, in the current scenario, it is not possible to link the structurally reinforced concrete paving to the economy of execution costs, despite the reduction in the volume of concrete provided by the alternative.