Avaliação funcional e estrutural de um trecho experimental em pavimento rígido: estudo de caso BR-101/NE Lote-05-PB - obra de duplicação.

Abstract

With the appearance of Brazilian Development Acceleration Program there has been an increase in the amount of works on the country highways, many of them making use of rigid pavement, which, despite having an initial high c o s t , demands much fewer interventions, being thus, at long term, and for some experts, much more viable than flexible pavement. With the increase of the road mesh in our country, it becomes obvious the demand for major studies about control and execution of highway projects, among them the study of longitudinal roughness, which is directly linked to security and easiness of vehicles rolling on pavement. This paper aims to study the functional and structural conditions of an experimental highway rigid pavement stretch - Duplication and Restoration of BR - 10/NE: Lot 05/PB - with the aid of equipment such as:"the Benkelman Beam", the Falling Weight Deflectometer (FWD), the Perfilograph California, and "Level and Pole", aiming to develop better procedures of control and execution of paving works using simple concrete of Portland cement. Results point out the importance of the functional and structural evaluation of the pavement as well as the study of mechanical properties in the control and execution of the layers that compose the rigid pavement, for the guarantee of its functional and structural adequacy. Although roughness and deflections measures are made in different periods of time, studies show that a cause and effect relationship between them does not exist. This in turn, must probably be inherent to the addition of permanent deformation as well as the conditions of structure and pavement surfaces.