A Comparative Study of Waste Red-Clay Brick Powder (WRCBP) and Fly Ash (FA) as Precursors for Geopolymer Production
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Le résumé fourni par la source
Utilizing waste red-clay brick powder (WRCBP) as a precursor for manufacturing geopolymers is increasingly popular due to its environmental and economic benefits. However, the geopolymerization of this waste remains insufficiently explored. This study evaluates the differences in physical–mechanical properties and microstructural evolution of WRCBP- and fly ash (FA)-based geopolymers to determine the reactivity of WRCBP. Mineral admixtures, including granulated blast furnace slag (GF) and metakaolin (MT), were incorporated with WRCBP to fabricate geopolymer pastes, while FA was used in parallel for comparison. The effects of activator modulus (1.2 and 1.4 for Na2SiO3) and curing conditions (65 °C and 90 °C) on the mechanical and microstructural performance of the prepared pastes were investigated through water demand analysis, compressive strength testing, mercury intrusion porosimetry (MIP), and scanning electron microscopy (SEM). The results indicate that WRCBP-based pastes achieved a comparable compressive strength (39.8 MPa) under appropriate alkali-activated and curing conditions relative to FA-based pastes (42.5 MPa). The modulus of the alkaline activator exerted a greater influence on strength development than the raw material composition. For both WRCBP- and FA-based pastes, 65 °C was identified as a more suitable curing temperature. Moreover, compared with FA-based pastes, pastes produced using WRCBP provide enhanced social and economic benefits. Overall, this study confirms that high-performance binders can be engineered by incorporating WRCBP, thereby supporting the development of sustainable low-carbon construction materials.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- A Comparative Study of Waste Red-Clay Brick Powder (WRCBP) and Fly Ash (FA) as Precursors for Geopolymer Production
- Date Crossref
- 05/12/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Shenzhen University Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering pays non établi dans la noticeUniversité ou école supérieure
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Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering pays non établi dans la noticeStructure de recherche
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Guangzhou University pays non établi dans la noticeUniversité ou école supérieure
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China State Construction Engineering (China) pays non établi dans la noticeEntreprise
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College of Civil and Transportation Engineering pays non établi dans la noticeUniversité ou école supérieure
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China State Construction Hailong Technology Co. pays non établi dans la noticeOrganisation à but non lucratif
Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering — Shenzhen University, Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering et Guangzhou University, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.