PAULO, R. C. L.; http://lattes.cnpq.br/2927689646852208; PAULO, Renan Camilo de Lima.
Résumé:
The highway network in Brazil is the main means of transportation and circulation of
people and consumer goods, and is therefore fundamental to the social and
economic growth of the country, as well as the interconnection of its regions and
integration of the Brazilian transportation matrix. The main pathologies existing in
Brazilian flexible pavements originate from the high number of vehicles and the
increase of their loads, as well as from environmental conditions and little or no
maintenance of this mode of transportation. Thus, the paving industry has focused on
the development and use of new techniques in recent years, such as modification of
asphalt binders, to minimize these defects. Moreover, with the use of modifiers, it is
possible to reduce the machining and compaction temperatures of the binders,
producing the so-called warm mixtures, also providing benefits in the environmental
theme, by generating greater energy savings and reduction in the emission of gases
causing greenhouse effect. Therefore, this study aims to evaluate the physical and
thermal behavior of modified asphalt binder CAP 50/70 by addition of copaiba oil in
the contents of 1, 2 and 3%. The physical characterization tests were performed:
thermodifferential analysis, thermogravimetric analysis. and exploratory differential
calorimetry, to determine the thermal properties of the material and to evaluate mass
loss with increasing temperature. It was verified that the addition of copaiba oil to the
asphalt binder promoted the improvement of physical properties and consequently
the reduction of machining and compaction temperatures, highlighting the content of
3% of copaiba oil addition oil that presented the best results for the analyzed
parameters.
