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Influence of addition of fluid catalytic cracking residue (FCC) and the SiO concentration in alkali-activated ceramic sanitary-ware (CSW) binders

Minerals, ISSN: 2075-163X, Vol: 8, Issue: 4
2018
  • 12
    Citations
  • 0
    Usage
  • 39
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    12
    • Citation Indexes
      12
  • Captures
    39
  • Mentions
    1
    • Blog Mentions
      1
      • Blog
        1

Article Description

Production of Portland cement requires a large volume of natural raw materials and releases huge amounts of CO to the atmosphere. Lower environmental impact alternatives focus on alkali-activated cements. In this paper, fluid catalytic cracking residue (FCC) was used to partially replace (0 wt %–50 wt %) ceramic sanitaryware (CSW) in alkali-activated systems. Samples were activated with NaOH and sodium silicate solutions and were cured at 65C for 7 days and at 20C for 28 and 90 days. In order to increase CSW/FCC binders’ sustainability, the influence of reducing the silica concentration (from 7.28 mol·kg up to 2.91 mol·kg) was analyzed. The microstructure of the developed binders was investigated in pastes by X-ray diffraction, thermo tests and field emission scanning electron microscopy analyses. Compressive strength evolution was assessed in mortars. The results showed a synergetic effect of the CSW/FCC combinations so that, under the studied conditions, mechanical properties significantly improved when combining both waste materials (up to 70 MPa were achieved in the mortars containing 50 wt % FCC cured at room temperature for 90 days). Addition of FCC allowed CSW to be activated at room temperature, which significantly broadens the field of applications of alkali-activated CSW binders.

Bibliographic Details

Juan Cosa; Lourdes Soriano; María Victoria Borrachero; Jordi Payá; José María Monzó; Lucía Reig

MDPI AG

Earth and Planetary Sciences

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