Reference : Gravel wash mud, a quarry waste material as supplementary cementitious material (SCM)
Scientific journals : Article
Engineering, computing & technology : Civil engineering
Sustainable Development
http://hdl.handle.net/10993/39998
Gravel wash mud, a quarry waste material as supplementary cementitious material (SCM)
English
Thapa, Vishojit Bahadur [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Waldmann, Danièle mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Simon, Claude []
Oct-2019
Cement and Concrete Research
Elsevier
124
105833
Yes
International
0008-8846
Oxford
United Kingdom
[en] Gravel wash mud (GWM) ; Supplementary cementitious materials ; Alternative clay materials ; Calcined clays ; Pozzolanic activity
[en] The suitability of gravel wash mud (GWM), a sludge waste from gravel quarrying, is examined for its use as a partial
Ordinary Portland cement (OPC) clinker substitute. The gravel wash mud was dried, milled into a fine powder and
calcined at 750°C, 850°C and 950°C. In this study, various characterisation methods including particle size distribution
(PSD), X-ray fluorescence (XRF), X-ray diffraction (XRD) and the simultaneous thermal analysis (STA) were applied
on the calcined GWM powders to determine the optimal calcination temperature. Over 200 specimens were prepared
based on different cement paste and mortar mixes to investigate the potential of calcined GWM powders as SCMs.
The pozzolanic activity of the GWM powders was verified by applying strength-based evaluation methods,
simultaneous thermal analysis and SEM on hardened samples. Very promising strength-enhancing capacities were
observed for samples containing GWM powders calcined at 850°C with a OPC replacement level of 20 wt.%.
University of Luxembourg: Laboratory of Solid Structures
CO2REDCEM
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/10993/39998
10.1016/j.cemconres.2019.105833
https://doi.org/10.1016/j.cemconres.2019.105833

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