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Use of fly ash and phosphogypsum for the synthesis of belite-sulfoaluminate clinker

Author(s):





Medium: journal article
Language(s): Spanish
Published in: Materiales de Construccion, , n. 333, v. 69
Page(s): 176
DOI: 10.3989/mc.2019.11617
Abstract:

Fly ash and phosphogypsum were used as Naturally Occurring Radioactive Materials (NORM) by-products for the synthesis of belite-sulfoaluminate clinkers. The influence of raw mixture composition and firing temperature was investigated. Clinkers and cements were examined by X-ray powder diffraction and scanning electron microscopy with energy dispersive X-ray spectroscopy. The compressive strength of the cements was determined after 28 days. Clinker phases identified included ye’elimite, ß-phase of belite, ternesite and gehlenite, while the main hydration product of the cement pastes was ettringite. The results showed that belite-sulfoaluminate cements can be fabricated with a compressive strength of 45.9 N/mm² by firing the raw mixture (70 wt.% marl, 10 wt.% bauxite and 20 wt.% phosphogypsum) at a temperature of 1320°C/1h.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.3989/mc.2019.11617.
  • About this
    data sheet
  • Reference-ID
    10516862
  • Published on:
    10/12/2020
  • Last updated on:
    19/02/2021
 
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