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    Papers in International JournalsChapters/ Papers in International BooksChapters/ Papers in National BooksCommunications in International ConferencesCommunications in National ConferencesMSc ThesesBooksProceedingsPatentsTechnical/ Scientific ReportsPhD Theses
    @JournalArticle {3102,
    	title = {Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste},
    	journal = {Cement and Concrete Composites},
    	volume = {105},
    	year = {2020},
    	month = {2020-01-02 00:00:00},
    	abstract = {

    The calcination of phosphate washing waste has a significant effect on the microstructure and mechanical
    properties of the phosphate washing waste-based alkali activated mortars. This study aims to investigate the reaction products of the phosphate washing waste activated with sodium hydroxide (SH) and sodium silicate (SS) with mass ratio of the two solutions SH/SS = 1.
    Different techniques were used to characterize the obtained mortars including: Compressive strength, X-ray diffraction XRD, Solid state magic angle spinning nuclear magnetic resonance (MAS-NMR) of 3 nuclei (27Al, 29Si and 31P), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and Electron microscope scanning and energy dispersive spectroscopy (SEM-EDS). The obtained results reveal that the alkali activation of phosphate washing waste generate 2 types of reactions and 2 types of products (N-A-S-H)/(C,N)-A-S-H as 3D network and C{\textendash}S{\textendash}H/C-(A)-S-H as 2D gel. The Al and reactive Ca have a strong effect on the final mechanicalproperties.

    }, keywords = {Alkali activated mortars, Calcination, FTIR, MAS-NMR, Phosphate washing waste}, doi = {10.1016/j.cemconcomp.2019.103449}, author = {Dabbebi, R. and Aguiar, J. B. and s. Baklouti} }

    About CTAC

    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 24 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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    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


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