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
*
Author to whom correspondence should be addressed.
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
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
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 StyleKioupis, 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
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
Search more from Scilit
