Development of Alkali-Activated Binders from Recycling Regional Tuff and Marble Wastes
El-Cezeri Journal of Science and Engineering, cilt.10, sa.2, ss.371-387, 2023 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 10 Sayı: 2
- Basım Tarihi: 2023
- Doi Numarası: 10.31202/ecjse.1225457
- Dergi Adı: El-Cezeri Journal of Science and Engineering
- Derginin Tarandığı İndeksler: Scopus
- Sayfa Sayıları: ss.371-387
- Anahtar Kelimeler: Alkali-activated cements, Ca(OH)2 activator, Marble wastes, Mechanical properties, NaOH activator, Physical properties, Volcanic tuff, Waste disposal, Waste management
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Dokuz Eylül Üniversitesi Adresli: Evet
Özet
The sustainability goals of the developing world have led many industries to recycle their wastes and reduce emitting greenhouse gases. To contribute to these environmental responsibilities, this study has focused on the development of eco-friendly binder materials from regional ground tuff and marble wastes by the activation of sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) or slaked lime (Ca(OH)2). The results of this study show that alkali-activated composites experienced expansion, drying shrinkage cracking, leaching, and efflorescence. The compressive strength values of the NaOH and Ca(OH)2-activated pastes reached up to 15 MPa and 9 MPa, respectively. A reduction in NaOH molarity improved the compressive strength, dimensional stability, and durability of tuff-based alkali-activated pastes.