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Abstract(s)
A infraestrutura aeroportuária assume papel de destaque tratando-se de segurança de vôo, dado ao grande percentual de ocorrência de acidentes nas operações de aterragem e descolagem. Os pavimentos aeroportuários são responsáveis por promover características adequadas para garantir a segurança dos utentes nessas operações.
A preocupação geral quanto às características funcionais do pavimento está relacionada com a aderência entre o pneu da aeronave e a superfície da pista de aterragem e descolagem. Objetiva-se a obtenção de revestimentos a partir de misturas betuminosas que assegurem a aderência pneupavimento, por meio da combinação da microtextura e macrotextura, criando propriedades de atrito adequadas à variação da velocidade das aeronaves e à adversidade das situações climáticas.
A estrutura do pavimento aeroportuário pode variar entre pavimento rígido e flexível, devido à ordem técnica e económica. A escolha do tipo de pavimento é justificada conforme o tipo de utilização do mesmo (pistas, caminhos de circulação, áreas de estacionamento).
O presente trabalho apresenta o estudo sobre o uso de misturas betuminosas do tipo camada porosa de atrito (CPA), que corresponde a uma camada betuminosa aberta, como camada de revestimento de pavimentos aeroportuários.
O trabalho desenvolve-se através do estudo das especificações técnicas para a utilização desse tipo de camada, bem como suas vantagens frente a revestimentos convencionais, que fundamentam sua aplicação como revestimento de pavimentos aeroportuários, e as limitações para seu uso.
Como estudo de caso será analisada a aplicação dessa mistura betuminosa aberta na obra de recapeamento na pista de aterragem e descolagem do Aeroporto de Catoca, a partir de documentos que relatam patologias ocorridas após um ano da execução.
Pretende-se, também, a identificação das possíveis causas dessas patologias por meio da comparação entre a descrição dos documentos fornecidos pela empresa responsável pelo projeto e as especificações técnicas apresentadas nesse trabalho.
The airport infrastructure assumes a prominent role in the case of flight safety, given to the high percentage of accidents in landing and taking-off operations. The airport pavements are responsible for promoting adequate characteristics to ensure the safety of users in such operations. The general concern about the pavement´s functional characteristics relates to the adhesion between the aircraft tire and the surface of the landing and taking-off runway. The goal is to obtain coatings from asphalt mixtures to ensure the tire-pavement grip, by combining microtextures and macrotextures in order to create friction properties suitable for both aircraft speed variation and climate adversity situations. The structure of the airport pavement can be either rigid or flexible, due to technical and economic issues. The choice of the kind of pavement is justified according to the type of its use (runways, taxiways, parking areas). This paper presents a study on the use of plant mixed of porous friction course (PFC), which corresponds to an open-graded course, as an airport wearing surface. The study was developed by researches and analysis of the technical specifications for the use of PFC, its advantages over the conventional courses, which justifies its application in airport pavements, and the limitations for its use. As a case study, the implementation of PFC in the resurfacing process of Catoca Airport's runway was analyzed, and it was developed from the documents reporting pathologies after a year of its implementation. Thus, the case study allowed us to verify the probable causes of these occurrences by comparing the documentation provided by the company responsible for the project of the runway with technical specifications presented in this paper.
The airport infrastructure assumes a prominent role in the case of flight safety, given to the high percentage of accidents in landing and taking-off operations. The airport pavements are responsible for promoting adequate characteristics to ensure the safety of users in such operations. The general concern about the pavement´s functional characteristics relates to the adhesion between the aircraft tire and the surface of the landing and taking-off runway. The goal is to obtain coatings from asphalt mixtures to ensure the tire-pavement grip, by combining microtextures and macrotextures in order to create friction properties suitable for both aircraft speed variation and climate adversity situations. The structure of the airport pavement can be either rigid or flexible, due to technical and economic issues. The choice of the kind of pavement is justified according to the type of its use (runways, taxiways, parking areas). This paper presents a study on the use of plant mixed of porous friction course (PFC), which corresponds to an open-graded course, as an airport wearing surface. The study was developed by researches and analysis of the technical specifications for the use of PFC, its advantages over the conventional courses, which justifies its application in airport pavements, and the limitations for its use. As a case study, the implementation of PFC in the resurfacing process of Catoca Airport's runway was analyzed, and it was developed from the documents reporting pathologies after a year of its implementation. Thus, the case study allowed us to verify the probable causes of these occurrences by comparing the documentation provided by the company responsible for the project of the runway with technical specifications presented in this paper.
Description
Keywords
Atrito Revestimento Aderência Microtextura Macrotextura Pavimento aeroportuário Friction Wearing surface Adhesion Microtexture Macrotexture Airport pavement