SANTOS JÚNIOR, P. S.; http://lattes.cnpq.br/8085610525653277; SANTOS JÚNIOR, Paulo de Sousa.
Résumé:
Asphaltic petroleum cement is a thermosensitive material destined to the paving
industry since, in addition to exposing waterproofing and binder characteristics, it
presents great resistance to the action of most salts, alkalis and inorganic acids, and
flexibility aspect. CAP may have its behavior determined on the basis of the
conditions under which it is present, presenting as a glassy solid at low temperatures
and / or under rapid loading, or acting as a viscous fluid at high temperatures and / or
loading slow. Commonly, additives are added to this material, seeking to improve its
properties, as well as reducing machining and compacting temperatures. Thus, this
study has as main objective to evaluate the rheological behavior of modified asphalt
binder CAP 50/70 by addition of copaiba oil. Physical and rheological
characterization tests will be carried out, including: Multiple Stress Creep Recovery -
MSCR, Linear Amplitude Sweep - LAS e Performance Grade - PG for CAP 50/70
with addition of copaiba oil at 1%, 2% and 3% before and after short-term aging-
RTFO. It was observed that the addition of the copaiba oil promoted improvements of
some of the rheological properties of the binder, however, it was not beneficial for all
parameters analyzed.