| Revista: | Polimeros (Sao Carlos) |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000314268 |
| ISSN: | 1678-5169 |
| Autores: | Gomes, Carlos Eduardo M1 Ferreira, Osny P2 |
| Instituciones: | 1Universidade de Sao Paulo, Interunidades em Ciencia e Engenharia de Materiais, Sao Paulo. Brasil 2Universidade de Sao Paulo, Escola de Engenharia de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Año: | 2005 |
| Periodo: | Jul-Sep |
| Volumen: | 15 |
| Número: | 3 |
| Paginación: | 193-198 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Recently, modern techniques have been applied for analysis of the influence of polymers on microstructural properties of Portland cement, such as Thermogravimetric Analyses (TG), Scanning Electronic Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR) and Mercury Intrusion Porosimetry (MIP). In this study, thermogravimetric analyses were used to study the influence of vinyl acetate-versatic vinylester copolymer (VA/VeoVA) in seven pastes of 28-day old Portland cement, in which distinct polymer contents and water/cement ratios were employed. In addition, analyses of FT-IR and MIP on Portland cement pastes modified by the copolymer were employed. The results showed that the addition of polymer interferes significantly in the reduction of Portlandite formation and increases the porosity of the matrices. A possible chemical interaction between the copolymer and hydrated products of Portland cement was also observed |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería civil, Ingeniería de materiales, Pasta de cemento, Microestructuras, Copolímeros, VA/VeoVa |
| Keyword: | Engineering, Civil engineering, Materials engineering, Cement paste, Microstructures, Copolymers, VA/VeoVa |
| Texto completo: | Texto completo (Ver HTML) |
