Aderência entre pneu e pavimento com camada porosa de atrito no Aeroporto Internacional Tancredo Neves MG

• Autor(a) principal: Lugão, Wilson Gandini
• Data de Publicação: 2008
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/805
• topic: Camada porosa de atrito; Avaliação de pavimentos; Aeroporto; Porous friction course; Pavement evaluation; Airport; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::GEOTECNICA

The high adherence between the tire and the pavement in the phases of landings and takeoffs of aircrafts is fundamental for the safety of a flight. In this thesis, the conditions of adherence in pavements with Porous Friction Course PFC, surface with high index of emptiness, were studied. It acts directly in the functional aspect of the pavement, draining the water of the surface quickly. Pavements with PFC, although already applied in two Airports in Brazil, still need specific studies, with essays and classifications widespread for all of the types of coverings. The study object was the lane of landings and takeoffs of the International Airport Tancredo Neves, Confins - MG. In that research, it was searched for, through equipments and procedures, in its majority, used in highways, to establish specific parameters of evaluation of the functional conditions of the pavement with PFC. It was verified that the lack of standardization of the material type used in the sand patch essay, can induce to precipitate conclusions about the condition of rubbery of the pavement. This way, a classification of levels of rubbery of the lane is proposed starting from results of essays of sand patch, with the adoption of the Normal Sand of the Instituto de Pesquisas Tecnológicas IPT (Institute for Technological Research), in the execution of the essays. For the characterization of the superficial macrotexture the classification of digital images can be adopted, that obtained good correlation when compared to the essays of sand patch. A drain machine adapted to the specific conditions of drainage of PFC was built, becoming one more instrument of verification of the macrotexture of the pavement. The British Pendulum and Mu- meter were used and for the friction measurements between tire and pavement, being verified the lack of correlation among the equipments. The essays with Mu-meter were shown quite divergent when compared in different dates, what lead us to considerer, in the hour of the essay, all the variables that influence the measurement conditions. It is necessary a revision of the technique of rubber removal and the periodicity of the cleaning, now adopted, due to the new conditions of traffic of the Airport.