Reciclagem de material asfáltico fresado utilizando solventes e microemulsões
AUTOR(ES)
Fernando Francisco Gomes Filho
DATA DE PUBLICAÇÃO
2010
RESUMO
With the increase of asphalt milling services was also a significant increase in recycling services pavements. The techniques used today are basically physical processes in which the milled material is incorporated into new asphalt mixtures or executed on site, with the addition of virgin asphalt and rejuvenating agent. In this paper seeks to analyze the efficiency of extraction of CAP (Petroleum Asphalt Cement) mixtures from asphalt milling, using commercial solvents and microemulsions. The solvents were evaluated for their ability to solubilize asphalt using an extractor reflux-type apparatus. Pseudoternary diagrams were developed for the preparation of microemulsion O/W surfactant using a low-cost coconut oil saponified (OCS). Microemulsions were used to extract the CAP of asphalt through physicochemical process cold. Analysis was performed concentration of CAP in solution by spectroscopy. The data provided in the analysis of concentration by the absorbance of the solution as the basis for calculating the percentage of extraction and the mass flow of the CAP in the solution. The results showed that microemulsions prepared with low concentration of kerosene and butanol/OCS binary has high extraction power of CAP and its efficiency was higher than pure kerosene, reaching 95% rate of extraction
ASSUNTO(S)
absorbância recycling absorbance microemulsão surfactant, phase diagram tensoativo diagrama de fase extraction reciclagem extração engenharia quimica microemulsion
ACESSO AO ARTIGO
Documentos Relacionados
- Avaliação de concreto asfáltico usinado a quente com incorporação de material fresado
- Reutilização de material asfáltico fresado : avaliação da potencialidade de uitlização em aterros rodoviários
- Avaliação do comportamento de misturas asfálticas recicladas a quente com inserção de material fresado
- Comportamento mecânico de material fresado após processo de estabilização granulométrica e química por meio da incorporação de cimento e cinza de casca de arroz moída
- Desenvolvimento de um novo conceito de plantas de lavagem e classificação para reciclagem de material contaminado