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Naslov:Alternative alkali activators based on waste bottle glass and waste cathode-ray tube glass
Avtorji:ID Koenig, Katja (Avtor)
ID Traven, Katja (Avtor)
ID Ducman, Vilma (Avtor)
Datoteke:.pdf PDF - Predstavitvena datoteka, prenos (14,96 MB)
MD5: 784B54F3B28983B358E004308C521C77
Opis: Odprti dostop
 
.pdf PDF - Predstavitvena datoteka, prenos (1,72 MB)
MD5: 9C43B4CE7C61DEF8FEF6FB1CF80E21C6
 
URL URL - Izvorni URL, za dostop obiščite https://www.zag.si/dl/coms2020-21-proceedings-2-rev.pdf
 
Jezik:Angleški jezik
Tipologija:1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:Logo ZAG - Zavod za gradbeništvo Slovenije
Povzetek:Alkali-activated binders are an environmentally friendly alternative to Portland cement, particularly when locally-available raw materials are used. It is well known that alkali activation with a sodium silicate activator generates a hardened binder with higher compressive strength than a binder hardened with sodium hydroxide. As the alkali-silicate activators are produced through energy extensive processes, and their use can significantly increase the carbon footprint of the final products, it is of great significance to develop alternative alkaline activators based on locally-available waste materials. This article assesses the potential to apply waste bottle glass and waste cathode-ray tube (CRT) glass to synthesise alternative alkali activators by the hydrothermal method. Inductively coupled plasma-optical emission spectrometry (ICP-OES) was used to determine silicon and aluminium content in the alternative activators. The influence of dissolution process parameters (time, temperature, particle size) on the concentrations of silicon and aluminium in the alternative activators was investigated. The alternative activators with silicon concentration up to 19 g/L and aluminium concentration up to 0.9 g/L were prepared at T = 120 °C and boiling time 24 h. The alternative alkali activators and, for comparison, also commercial sodium silicate were used in the alkali activation of fly ash powder. The formed pastes were cured at 70 °C for 72 h. Mechanical strength measurements indicated that alkali activation of fly ash with the optimal alternative activator yielded hardened paste with compressive strength of 33 MPa. However, the compressive strength of hardened paste prepared from fly ash and commercial sodium silicate reached 70 MPa. Part of this difference can be ascribed to the lower density of hardened pastes prepared with alternative activators.
Ključne besede:alkali -activated materials, alternative alkali activators, waste bottle glass, waste cathode -ray tube glass, fly ash, hydrothermal method
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2021
Založnik:Slovenian National Building and Civil Engineering Institute
Leto izida:2021
Št. strani:Str. 93-100
PID:20.500.12556/DiRROS-17974 Novo okno
UDK:624
COBISS.SI-ID:69350659 Novo okno
Avtorske pravice:© 2021 Slovenian National Building and Civil Engineering Institute, Ljubljana 2021
Opomba:Nasl. z nasl. zaslona; Opis vira z dne 6. 7. 2021;
Datum objave v DiRROS:25.01.2024
Število ogledov:697
Število prenosov:432
Metapodatki:XML DC-XML DC-RDF
:
KOENIG, Katja, TRAVEN, Katja in DUCMAN, Vilma, 2021, Alternative alkali activators based on waste bottle glass and waste cathode-ray tube glass. V : Construction materials for a sustainable future [na spletu]. Objavljeni znanstveni prispevek na konferenci. Ljubljana : Slovenian National Building and Civil Engineering Institute. 2021. p. 93–100. [Dostopano 17 marec 2025]. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=17974
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Gradivo je del monografije

Naslov:Construction materials for a sustainable future : proceedings of the 2nd International Conference CoMS 2020/21
Uredniki:Aljoša Šajna, Andraž Legat, Sabina Jordan, Petra Horvat, Ema Kemperle, Sabina Dolenec, Metka Ljubešek, Matej Michelizza
Kraj izida:Ljubljana
Založnik:Slovenian National Building and Civil Engineering Institute
Leto izida:2021
ISBN:978-961-7125-03-0
COBISS.SI-ID:68189443 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J2-9197
Naslov:Sinteza in karakterizacija alkalijsko aktiviranih pen na osnovi odpadnih materialov

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Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
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