Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/56067

TitleEffect of the calcinations temperatures of phosphate washing waste on the structural and mechanical properties of geopolymeric mortar
Author(s)Dabbebi, R.
Aguiar, J. L. Barroso de
Camões, Aires
Samet, B.
Baklouti, s.
KeywordsGeopolymeric mortar
Phosphate washing waste
Sodium hydroxide
Sodium silicate
Issue dateOct-2018
PublisherElsevier
JournalConstruction and Building Materials
CitationDabbebi R., Aguiar J. B., Camões A., Samet B., s. Baklouti Effect of the calcinations temperatures of phosphate washing waste on the structural and mechanical properties of geopolymeric mortar, Construction and Building Materials, Vol. 185, pp. 489 - 498, doi:10.1016/j.conbuildmat.2018.07.045, 2018
Abstract(s)The phosphate industry is facing serious environmental problems. This issue is caused by the waste after the extraction of the phosphate ore. The waste termed as phosphate washing waste (PWW) was filtered and dried at 105 ºC for 24 h to remove the water. The dried PWW was milled, sieved in a 100 mm sieve and characterized by X-ray fluorescence (XRF). The resulting waste was calcined at 600, 700 and 800 ºC, the calcined and uncalcined waste were investigated by X-ray powder diffraction (DRX), Fourier transform infrared (FTIR), simultaneous differential thermal and thermogravimetric analyses (DSC-TG) and scanning electron microscope (SEM). The PWW was activated with sodium hydroxide (NaOH) and sodium silicate to produce geopolymeric materials. It was found that the calcination temperature and the extra water added to the mixture to assure the good workability play an important role on the development of the system?s workability and compressive strength.
TypeArticle
URIhttp://hdl.handle.net/1822/56067
DOI10.1016/j.conbuildmat.2018.07.045
ISSN0950-0618
Peer-Reviewedyes
AccessEmbargoed access (2 Years)
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

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