ABSTRACT
Asphalt road coating pavement has the function of reducing the tensions imposed by the traffic and offer comfort and safety to the users. Thus, studies to inhibit short-term corrective interventions and increase their useful life are of interest to the agencies responsible for their maintenance. Modifications of the asphaltic binders are important in this context, in order to confer greater durability to the coatings, however, factors such as the separation of phases in the modified binders, limit the modification on an industrial scale. The objective of this study was to evaluate the physico-chemical stability and the adhesiveness of the modified CAP 50/70 with oil sludge blend and tire rubber in the proportion of 85/15% m / m (M1) in the presence of NPA additives - Neutral Heavy Aromatic and clays bentonite and kaolinite. For this purpose, storage stability tests were carried out with the modified binders, by viscosity measurement, of the adhesiveness according to standard 078/98 of the DNER. The results showed that the addition of 1% m / m NPA increases the storage stability of the M1 modified binder and improves its adhesiveness to the aggregate.
Keywords:
Oily oil sludge; tire rubber; phase separation; adhesiveness
