Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt
@JournalArticle {2845, title = {Effect of the calcinations temperatures of phosphate washing waste on the structural and mechanical properties of geopolymeric mortar}, journal = {Construction and Building Materials}, volume = {185}, year = {2018}, month = {2018-10-01 00:00:00}, pages = {489 - 498}, publisher = {Elsevier}, abstract = {The phosphate industry is facing serious environmental problems. This issue is caused by the waste after
}, keywords = {Geopolymeric mortar, Phosphate washing waste, Sodium hydroxide, Sodium silicate}, doi = {10.1016/j.conbuildmat.2018.07.045}, author = {Dabbebi, R. and Aguiar, J. B. and Cam{\~o}es, A. and Samet, B. and s. Baklouti} }
the extraction of the phosphate ore. The waste termed as phosphate washing waste (PWW) was filtered
and dried at 105 {\textordmasculine}C 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 {\textordmasculine}C, 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{\textquoteright}s workability and compressive strength.
The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.
Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more
Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt