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Open AccessArticle

Valorization of Brick and Glass CDWs for the Development of Geopolymers Containing More Than 80% of Wastes

School of Chemical Engineering, National Technical University of Athens, 15773 Athens, Greece
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Minerals 2020, 10(8), 672; https://doi.org/10.3390/min10080672
Received: 19 June 2020 / Revised: 24 July 2020 / Accepted: 27 July 2020 / Published: 29 July 2020
(This article belongs to the Special Issue Alkali Activated Materials: Advances, Innovations, Future Trends)
One of the areas of priority in a circular economy, regarding waste management, regards the valorization of construction and demolition wastes (CDW). This study suggests the synthesis of geopolymeric binders based almost entirely on construction and demolition wastes. Ceramic waste was used as the aluminosilicate precursor of the geopolymer synthesis, while glass waste was applied in the preparation of the activation solution. A fractional experimental design defined the optimum synthesis parameters, based on compressive strength values. The final products were characterized by means of X-Ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The glass waste was appropriately processed in order to prepare the activation solution for the geopolymerization of brick waste. In this work, CDW-based geopolymers were produced with a compressive strength in the range 10–44 MPa. The developed products contained 80–90 wt.% CDWs, depending on the method of activator preparation. View Full-Text
Keywords: geopolymer; CDW; waste brick; waste glass; compressive strength; characterization geopolymer; CDW; waste brick; waste glass; compressive strength; characterization
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MDPI and ACS Style

Kioupis, D.; Skaropoulou, A.; Tsivilis, S.; Kakali, G. Valorization of Brick and Glass CDWs for the Development of Geopolymers Containing More Than 80% of Wastes. Minerals 2020, 10, 672. https://doi.org/10.3390/min10080672

AMA Style

Kioupis D, Skaropoulou A, Tsivilis S, Kakali G. Valorization of Brick and Glass CDWs for the Development of Geopolymers Containing More Than 80% of Wastes. Minerals. 2020; 10(8):672. https://doi.org/10.3390/min10080672

Chicago/Turabian Style

Kioupis, Dimitris; Skaropoulou, Aggeliki; Tsivilis, Sotirios; Kakali, Glikeria. 2020. "Valorization of Brick and Glass CDWs for the Development of Geopolymers Containing More Than 80% of Wastes" Minerals 10, no. 8: 672. https://doi.org/10.3390/min10080672

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