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Study of new formations of C-S-H in manufactured with glass powder as binder mortar
Estudio de las nuevas formaciones C-S-H en morteros fabricados con polvo de vidrio como ligante
DOI:
https://doi.org/10.15446/ing.investig.v38n3.67270Keywords:
Glass Powder, Binder, Self-regeneration, Soil Stabilization (en)Polvo de Vidrio, Ligante, Autoregeneración, Estabilización de suelos (es)
Mortar and paste with different composition were analyzed with X-ray diffraction and dispersive energy spectrometry (EDS) with coupled Electronic Scanning Microscope (SEM) to study the formation that appear after the setting reaction in the mortar made by using glass powder, with a size of 16μ, as binder. Such analysis shows the occurrence of formations similar to C-S-H gels, but in which, the Ca/Si ratio is lower than for typical C-S-H gels. In addition it was observed that the shape of the gels is slightly different when the samples are preserved in water. These more filamentous formations and the presence of a larger number of Si molecules causes the setting reaction to be maintained for a longer period of time and provide a certain capacity for self-regeneration without external intervention, which makes it suitable for soil stabilization.
Para estudiar las formaciones que aparecen tras las reacciones de fraguado en los morteros fabricados utilizando polvo de vidrio como ligante, se han analizado mediante difracción por rayos X y espectrometría de energía dispersiva (EDS) con Microscopio Electrónico de Barrido (MEB) acoplado, morteros y pastas con diferentes composiciones. Dichos análisis han mostrado la aparición de unas formaciones similares a los geles C-S-H, en las que la relación Ca/Si es menor que para los C-S-H que aparecen con ligante convencionales. Además, se ha observado que la forma de los geles es ligeramente diferente cuando las muestras se conservan en agua. Estas formaciones, más filamentosas, y la presencia de mayor número de moléculas de Si hace que las reacciones de fraguado se mantengan durante más tiempo, y proporcionen una cierta capacidad de autoregeneración sin intervención externa, esto hace que su uso sea idóneo en la estabilización de suelos.
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Copyright (c) 2018 Eva María García del Toro, María Isabel Más López
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