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Effect of additives on the compressive strength of slag-based inorganic polymers

Zacharaki Dimitra, Komnitsas Konstantinos

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URIhttp://purl.tuc.gr/dl/dias/3ADE9B90-B0E4-4E3C-818E-DBDEEB7CD293-
Γλώσσαen-
ΤίτλοςEffect of additives on the compressive strength of slag-based inorganic polymersen
ΔημιουργόςZacharaki Dimitraen
ΔημιουργόςΖαχαρακη Δημητραel
ΔημιουργόςKomnitsas Konstantinosen
ΔημιουργόςΚομνιτσας Κωνσταντινοςel
ΠερίληψηThe present paper aims to assess the effect of various additives on the compressive strength of inorganic polymers (geopolymers) synthesised using low Ca electric arc ferronickel slag and alkali activating solutions. The main operating parameters include pre-curing (48 hours), temperature (40 to 80 o C), heating time (24 or 48 h) and aging period (7 days). Addition of kaolinite, pozzolan, fly ash, red mud or CaO in the initial mixture has a detrimental effect on the final compressive strength. Addition of pulverised silica sand improves strength slightly, whereas addition of commercial glass results in strength values exceeding 60 MPa. XRD analysis was carried out to identify new formed phases and the degree of amorphicity, while SEM and element mapping analysis were used to identify the morphology of the final products as well as to elucidate to a certain degree the mechanisms involved in inorganic polymer synthesis. en
ΤύποςΠλήρης Δημοσίευση σε Συνέδριοel
ΤύποςConference Full Paperen
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by-nc-nd/4.0/en
Ημερομηνία2015-11-15-
Ημερομηνία Δημοσίευσης2008-
Βιβλιογραφική ΑναφοράD. Zaharaki, K. Komnitsas,"Effect of additives on the compressive strength of slag-based inorganic polymers," in Proceedings (on CD ROM) of 2nd International Conference on Engineering for Waste Valorisation, 2008.en

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