| Revista: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312747 |
| ISSN: | 1516-1439 |
| Autores: | Lucena, Maria da Conceicao Cavalcante1 Soares, Sandra de Aguiar Soares, Jorge Barbosa |
| Instituciones: | 1Universidade Federal do Ceara, Departamento de Quimica Organica e Inorganica, Fortaleza, Ceara. Brasil |
| Año: | 2004 |
| Periodo: | Oct-Dic |
| Volumen: | 7 |
| Número: | 4 |
| Paginación: | 529-534 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | A styrene-butadiene-styrene modified asphalt cement was characterized by infrared, differential scanning calorimetry, thermogravimetric analysis and empirical tests such as ring and ball softening point, penetration and elastic recovery. After aging in the rolling thin-film oven, the polymer-modified asphalt presented structural changes relating to oxidation of the material. The infrared spectra showed an increase in hydroxyl groups and the formation of carbonyl compounds and sulphoxides. The percentage of crystallized fraction calculated from differential scanning calorimetry was 0.41%. Thermogravimetric analyses in inert and oxidative atmospheres revealed distinct events during thermal decomposition; the initial activation energies were similar, but changed as the process evolved |
| Disciplinas: | Ingeniería, Química |
| Palabras clave: | Ingeniería civil, Ingeniería de materiales, Ingeniería mecánica, Química de polímeros, Química inorgánica, Cemento asfáltico, Carreteras, Propiedades mecánicas, Degradación térmica |
| Keyword: | Engineering, Chemistry, Civil engineering, Materials engineering, Mechanical engineering, Inorganic chemistry, Polymer chemistry, Asphaltic cement, Highways, Mechanical properties, Thermal degradation |
| Texto completo: | Texto completo (Ver HTML) |
