NÓBREGA, E. R.; http://lattes.cnpq.br/5726203648133574; NÓBREGA, Edilza Rakel.
Résumé:
In Brazil, a country that uses predominantly road transport, has been doing research for
paving methods that are able to offer confort and safety to users. It guarantees a good skid
resistance and a effective drainage of superficial waters, among other characteristics.
Therefore draining pavments were created. They are used to mitigate the need for the pavement
to allow the flow of waters, much like the Open-graded friction course (OGFC). The OGFC is
a tecnology used as floor coating and its main characteristic is high volume of air voids, between
18% and 25%. The goal of this research is to contribute in investigations about the viability of
use Compaction SGC, in dosage of OGFC, based on parameters stablished by norm DNIT-ME
386/99. Thus the study aimed to increase the benefit of kneading compaction that simulate more
accurately the compaction field, to reality of Brazilian dosage of OGFC, which is now made
with Marshall technology. In this study, we made Compaction SGC of asphalt mixtures in
binder contentes of 3,5%, 4,0%, 4,5%, 5,0% e 5,5% in aggregate weight. They were tested to
determine the parameters of volume of air voids, Cantabro and Indirect Tensile Strength, as
determined by the DNIT-ME 386/99 standard for dosage purposes, Considering the results, the
optimal content binder is 4,5% for OGFC. With the purpose of evaluating the effects of
Compaction SGC in the CPA mixture dosed by the parameters of DNIT-ME 386/99, the
mechanical and hydraulic characterization tests established by ASTM D7064-13 were carried
out, which are volume of air voids, Cantabro, Indirect Tensile Strength, flow, Resilient
Modulus, moisture-induced damage and communicating voids. The results found were
satisfactory, indicating the feasibility of using Compaction SGC in OGFC dosed according to
the parameters established by the Brazilian standard DNIT-ME 386/99.
