SciELO - Scientific Electronic Library Online

vol.22 número4Efeito do tratamento alcalino de fibras de juta no comportamento mecânico de compósitos de matriz epóxiUm material alternativo à base de SBS para substituir a guta percha no tratamento endodôntico índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados



versão impressa ISSN 0104-1428


CUNHA, Tayana M. F. et al. Effect of addition of plant material (fiber of cutia chesnut) and polymer (SBS) on the properties of asphalt binder (CAP 50/70). Polímeros [online]. 2012, vol.22, n.4, pp.345-351.  Epub 07-Ago-2012. ISSN 0104-1428.

There is a need in the Brazilian market for asphalt binders that minimize premature structural failure of the coatings on urban roads, and the modification of asphalt cement oil (CAP 50/70) is an excellent option. In this research we used 2% w/w of the styrene - butadiene-styrene (SBS) copolymer and 2% w/w of natural fiber from Couepia edulis (Prance), known as cutia chesnut, which is a plant from the Amazon region with strengthening properties. The oxidative and thermal effects, as well as the physical characteristics of the asphalt modified materials, were studied and compared to the conventional binder, using the tests set by the National Agency of Petroleum, Natural Gas and Biofuels (ANP) and thermal analysis - thermogravimetry (TG) to determine the properties of thermal degradation and stabilization. In comparison with the traditional binders, the modified ones exhibited increased resistance to aging, evidenced by an increase in consistency, softening point and excellent thermal stability in the whole range of operating (10 ºC to 80 ºC ) and application (130 ºC to 170 ºC) temperatures for the asphalt cement oil, providing an option for regional pavements.

Palavras-chave : SBS copolymer; fibers; modified asphalt; Amazon; Couepia edulis; cutia chestnut.

        · resumo em Português     · texto em Português     · Português ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons