Análise das correlações existentes entre as medidas de aderência pneu-pavimento avaliadas em campo e em laboratório

Abstract

Brazil has its transportation system based mainly on roads, thus the quality of the roads is essential for the development of the country. This study evaluates the skid resistance characteristics in highways in the states of Pernambuco and Paraíba, verifying the possibility of making predictions based on laboratory simulations. For this purpose, the following tests were used: sand patch, British pendulum, and outflow meter and later the calculations were also performed to verify the International Friction Index (IFI) of selected points on the investigated roads. Then, two mixtures used in the field were reproduced in the laboratory and tested with simulated traf-fic to check their behavior with respect to skid resistance. Finally, two mixtures were designed, one discontinuous and one dense, in order to verify the possibility of ranking them according to their friction potential. With the results, can get parameters that allow a prediction in laboratory for the field behavior of these mixtures.