Estudo sobre o efeito do CCBit-113AD no comportamento mecânico de ligantes e misturas asfálticas

• Ano de defesa: 2014
• Autor(a) principal: Oliveira, Robson Barbosa
• Orientador(a): Cavalcante, Erinaldo Hilário
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Programa de Pós-Graduação: Pós-Graduação em Engenharia Civil
• Palavras-chave em Português: Engenharia civil; Asfalto; Pavimentos de asfalto; Asfalto - Aditivos; CCBit-113AD
• Palavras-chave em Inglês: Asphalt; Civil engineering; Pavements, Asphalt
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: https://ri.ufs.br/handle/riufs/5008

Traditional asphalt, in general, meet the expectations of functionality for which they were produced in most road applications, reaching necessary for the proper performance of asphalt mixtures under traffic patterns durability and resistance and adverse weather conditions with sudden changes in temperature and heavy rainfall. The high power consumption for the machining of such mixtures cause the emission of gaseous pollutants, which add to the discomfort to workers due to the high heat and excessive smoke emanating from the asphalt mix in their application and compaction on the highways. From the foregoing, it is increasingly necessary to use additives or modifiers of the physical and rheological properties of asphalts, if aiming at promoting a reduction in machining temperature and compaction of asphalt mixtures, without, however, losing their intrinsic characteristics necessary occur. The objective of this study was to evaluate the rheological behavior of asphalt binder CAP 50/70 and its behavior in asphalt mixtures with and without the additive CCBit- 113AD. For this rheological tests were performed using a Brookfield rotational viscometer and dynamic shear rheometer (DSR) with the ligand with and without the additive, asphalt mixtures were measured using three different concentrations of the additive: 1.5; 2.0 and 2.5 %, and evaluated the mechanical behavior of the blends by means of tests of tensile strength and resilient modulus. From the results, it was found that the asphalt mixture type CAUQ measured using the modified CAP with CCBit-113AD under lower temperatures compatible with conventional presented with the results of pure mixtures, leading to the conclusion that the warm mixtures can be used undergoing less traffic which traditionally are used asphalt hot mix.