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- Title
Preparation and properties of fly ash-based geopolymer concrete with alkaline waste water obtained from foundry sand regeneration process.
- Authors
Moni, S M Fuad Kabir; Ikeora, O.; Pritzel, C.; Görtz, B.; Trettin, R.
- Abstract
The aim of the research was to investigate the influences of high alkaline content foundry sand regeneration wastes incorporated with fly ash in the production of geopolymer concrete. The fly ash-based geopolymer concrete was activated using alkaline solutions of sodium silicate and sodium hydroxide. The geopolymeric products were characterized using X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy and simultaneous thermal analysis. A higher compressive strength was observed in mechanical strengths test in the geopolymer and its respective foam concrete made of waste water in comparing to reference water (tap water). Furthermore, a packed arrangement and lower pore size distribution for both geopolymer and foam concrete were observed using nitrogen gas adsorption and mercury intrusion porosimetry, in contrast, to waste water and reference water.
- Subjects
POLYMER-impregnated concrete; CONCRETE waste; SEWAGE; FOUNDRY sand; FLY ash; PORE size distribution; ALKALINE solutions
- Publication
Journal of Material Cycles & Waste Management, 2020, Vol 22, Issue 5, p1434
- ISSN
1438-4957
- Publication type
Article
- DOI
10.1007/s10163-020-01032-3