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Leaching of alkali-activated tungsten mining waste materials by electrical conductivity and DRX
- Source :
- MATEC Web of Conferences, Vol 274, p 02002 (2019), MATEC Web of Conferences
- Publication Year :
- 2019
- Publisher :
- EDP Sciences, 2019.
-
Abstract
- The production of Portland cement leads to high energy and natural resource consumption, as well as relevant emission of CO2 into the atmosphere. Thus, this research work intends to contribute to the study of Portland cement alternative alkali activated binders, which utilization can contribute to counteract to this status. Different samples of alkaline activated binders using different combinations of tungsten mining waste from Panasqueira Mines, milled glass and metakaolin were made. Compression tests were performed at 3, 7, 14 and 28 days of curing. For evaluating reactivity chemical leaching was measured. For such, conductivity tests were carried out simultaneously with pH measurement, SEM-BSE and ATR-FTIR analysis. Electrical conductivity tests enabled to preliminary identify the chemical leaching for different precursors. Additionally, by SEM-BSE it was possible to observed reacted and nonreacted particles, and the reactivity extend was confirmed by ATR-FTIR.
- Subjects :
- Materials science
Metallurgy
0211 other engineering and technologies
chemistry.chemical_element
020101 civil engineering
02 engineering and technology
Tungsten
0201 civil engineering
chemistry
Electrical resistivity and conductivity
lcsh:TA1-2040
021105 building & construction
Alkali activated
Leaching (metallurgy)
lcsh:Engineering (General). Civil engineering (General)
Subjects
Details
- Language :
- English
- Volume :
- 274
- Database :
- OpenAIRE
- Journal :
- MATEC Web of Conferences
- Accession number :
- edsair.doi.dedup.....75f684d8a6da6772508902bdf78173bf