Study of laboratory properties of OGFC considering stone-on-stone contact

Artigo de evento
Data de publicação
24th Annual Southern African Transport Conference, SATC 2005: Transport Challenges for 2010
Citações (Scopus)
Merighi J.V.
Fortes R.M.
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
In recent years the major performance problem found with dense graded asphalt mixture used in all bus lanes in São Paulo City is permanent deformation. The damage is accelerated by the low speed of the buses, which average around 25 km/h, and the high temperatures during eight months of the year. For these reasons, it is common to find premature rutting in these pavements. On the other hand, the literature reports many cases where stone mastic asphalt (SMA) and Open-Graded Friction Course (OGFG) applications were used to minimise rutting and promote the best tire/pavement contact. The aim of this paper is to present the research conducted to overcome the rutting problem. This research was focused on the laboratory properties of OGFC with regard to stone-on-stone contact. All mixtures and test specimens were compacted with the Marshall apparatus and the volumetric properties for each mixture were determined. Unconfined static creep tests were conducted at 25øC, 40øC and 50øC.
Assuntos Scopus
Asphalt mixtures , Open-graded friction course (OGFC) , Rutting , Stone mastic asphalt (SMA)