Avaliação de Pavimento Misto Composto por Revestimentos em CPA e Concreto de Cimento Portland em Vias Urbanas

Abstract

There is a preference for using asphalt paving throughout Brazil. It is known that the two main defects of Brazilian asphalt paving are fatigue cracking and permanent permanent deformation. The combination of high temperatures and low speeds at bus stops makes The combination of high temperatures and low speed at bus stops makes these places especially prone to permanent deformation defects. In order to minimise these permanent deformations, a mixed pavement option is in In order to minimize these permanent deformations, a mixed pavement option is in use in the city of Fortaleza. The use of Friction Porous Layer (CPA) has become a recent alternative for the improvement of road safety The use of CPA has become a recent alternative to improve road safety by providing better surface drainage. The mixed structure studied is composed by CPA coating on the extension of the road and Portland Cement Concrete (PCC) slabs at bus stops. at bus stops. This solution was used at Governador Raul Barbosa Av. Desembargador Moreira Av. between Raul Barbosa Av. and Padre Antônio Tomás Av; and Abolição Av. At first, a functional analysis of the bus stop locations was carried out before bus stops before the intervention of the work with the use of GoogleMaps images for generation of an Expedited General Gravity Index (IGGE). By selecting some points of the situation of the bus stops was calculated for the calculation of the PCI of the rigid pavement, by comparing the situation of the roads. Subsequently, with geometry data and the characteristics of of the materials used, obtained from literature and the project of the City Hall of Fortaleza (PMF), analysis software was used to obtain structural results. Finally, three three solutions were proposed, one with flexible pavement, one with mixed pavement and one with rigid pavement; to be made corresponding budgets and compared with budget of how the project was proposed and executed. It was found that the mixed pavement is in better condition than traditional pavement. From a financial point of view,the executed work presented a lower cost than the three proposed scenarios.