Compressive strength and microstructure of concretes manufactured with supersulfated cement based on materials of volcanic origin exposed to a sulfate environment
This paper presents the results of concretes manufactured with supersulfated cement (SSC) based on volcanic materials. The concretes were cured under two regimes, one for 24 h at 25 °C and another for 22 h at 60 °C and then at 25 °C. The specimens were exposed to two conditions: dry laboratory condi...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | México |
| Institución: | Universidad Veracruzana |
| Repositorio: | Redalyc-UV |
| OAI Identifier: | oai:redalyc.org:427657394026 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=427657394026 https://www.redalyc.org/journal/4276/427657394026/ https://www.redalyc.org/journal/4276/427657394026/html/ https://www.redalyc.org/journal/4276/427657394026/427657394026.epub https://www.redalyc.org/journal/4276/427657394026/movil https://doi.org/10.21041/ra.v9i1.374 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería pumice sulfate environment compressive strength Supersulfated concrete |
| Sumario: | This paper presents the results of concretes manufactured with supersulfated cement (SSC) based on volcanic materials. The concretes were cured under two regimes, one for 24 h at 25 °C and another for 22 h at 60 °C and then at 25 °C. The specimens were exposed to two conditions: dry laboratory conditions and immersed in a solution with 3.5% CaSO4 at 25 °C for up to 180 days. After 180 days, the concrete with a cementitious compound of 5%An-10%PC-10%CaO-75%PM reached a compressive strength of 46 MPa exposed to CaSO4 solution and of 44 MPa in dry laboratory conditions. The microstructure was analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction, which showed that the main hydration products are C-S-H and ettringite. |
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