Características fisicoquímicas de un ligante eco-amigable usando una mezcla ternaria de residuos industriales

Autores/as

  • Hoang-Anh Nguyen National Taiwan University of Science and Technology (NTUST) (Taiwan Tech)
  • Ta-Peng Chang National Taiwan University of Science and Technology (NTUST) (Taiwan Tech)
  • Chun-Tao Chen National Taiwan University of Science and Technology (NTUST) (Taiwan Tech)
  • Tzong-Ruey Yang National Taiwan University of Science and Technology (NTUST) (Taiwan Tech)
  • Tien-Dung Nguyen National Taiwan University of Science and Technology (NTUST) (Taiwan Tech)

DOI:

https://doi.org/10.3989/mc.2015.07414

Palabras clave:

Ceniza volante, Escorias granuladas de horno alto, Pasta de cemento, Mortero, Productos de hidratación

Resumen


Este trabajo estudia las características fisicoquímicas de pastas y morteros con un ligante eco-amigable llamado cemento SFC, producido por una mezcla ternaria de materiales a partir de residuos industriales tales como escorias granuladas de alto horno (S), ceniza volante clase F (FFA), y cenizas volantes de combustión en lecho fluidizado circulante (CFA). Para desencadenar la hidratación, el CFA que actuó como un activador alcalino-sulfato se añadió a la mezcla combinada de escoria y FFA. La relación de agua/ligante (W/B), el tipo de curado, y la adición de FFA afectaron significativamente a las prestaciones mecánicas así como a la retracción/expansión de pastas y morteros de SFC. Los morteros SFC presentaron una trabajabilidad mayor que los correspondientes de cemento de Portland (OPC). Con una trabajabilidad similar, los morteros SFC presentaron resistencias mecánicas y expansión comparables a los morteros de OPC. Los principales productos de hidratación del cemento SFC fueron etringita (AFt) y geles C-S-H/C-A-S-H. La transformación de AFt a mono sulfatos fue observada a medida que el tiempo de hidratación progresaba.

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Publicado

2015-09-30

Cómo citar

Nguyen, H.-A., Chang, T.-P., Chen, C.-T., Yang, T.-R., & Nguyen, T.-D. (2015). Características fisicoquímicas de un ligante eco-amigable usando una mezcla ternaria de residuos industriales. Materiales De Construcción, 65(319), e064. https://doi.org/10.3989/mc.2015.07414

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