Alkali activation of waste clay bricks: influence of the silica modulus, SiO2/Na2O, H2O/Na2O molar ratio, and liquid/solid ratio
Authors:
- R. A. Gado,
- Marek Hebda,
- Michał Łach,
- Janusz Mikuła
Abstract
This study was conducted to investigate the influence of various reaction conditions, namely the silica modulus SiO2/Na2O,H2O/Na2O molar ratio, and liquid/solid ratio on the geopolymerization reaction of the waste fired clay bricks (Grog). The starting raw material and the generated geopolymer specimens produced by di erent geopolymerization reaction conditions have been characterized using di erent techniques: X-ray di raction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and thermal analysis. Furthermore, physico–mechanical characterization has been carried out through the determination of bulk density, porosity, water absorption, and compressive strength for each sample at interval curing times of up to 28 days. The results indicated that the geopolymerization system of the waste fired clay bricks is influenced by the investigated reaction conditions at room temperature. The compressive strength of the geopolymer sample produced at optimum conditions increased significantly by up to 37.5 MPa, in comparison with 4.5 MPa for other conditions. Finally, an optimum recommendation and useful conclusions concerning the recycling and utilization of this waste material through the geopolymerization process are made for compatibility with construction applications.
- Record ID
- CUTc945832843634c9280660252489d89a1
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2020
- Vol
- 13
- No
- 2
- Pages
- [1-26]
- Article number
- 383
- Other elements of collation
- fot.; wykr.; Bibliografia (na s.) - 24-26; Bibliografia (liczba pozycji) - 50; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 13, Iss. 2, Spec. Iss.
- Substantive notes
- Special Issue: Alkali‐activated materials for sustainable construction
- Keywords in English
- geopolymer, waste fired clay bricks (Grog), silica modulus (Ms), H2O/Na2O molar ratio, liquid/solid ratio, geopolymerization rate
- URL
- https://www.mdpi.com/1996-1944/13/2/383 Opening in a new tab
- Related project
- Opracowanie technologii druku 3D, konstrukcyjnych i elewacyjnych elementów prefabrykowanych wykonywanych z kompozytów betonowych i geopolimerów. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTc945832843634c9280660252489d89a1/
- URN
urn:pkr-prod:CUTc945832843634c9280660252489d89a1
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.