Alkali-Activated Mortars Incorporating Construction and Demolition Waste and Industrial By-products: A Fresh and Hardened State Evaluation
Yazarlar (4)
Oğuzhan Şahin Ankara Üniversitesi, Türkiye
Dr. Öğr. Üyesi Şevki EREN Kırşehir Ahi Evran Üniversitesi, Türkiye
Hüseyin Ulugöl Ankara Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (ESCI dergilerinde yayınlanan tam makale)
Dergi Adı Gazi University Journal of Science
Dergi ISSN 1303-9709
Dergi Tarandığı Indeksler ESCI
Makale Dili İngilizce Basım Tarihi 09-2025
Cilt / Sayı / Sayfa 38 / 4 / 1742–1752 DOI 10.35378/gujs.1637907
Makale Linki https://doi.org/10.35378/gujs.1637907
UAK Araştırma Alanları
Yapı Malzemeleri
Özet
This study examines the potential of alkali-activated composites to produce sustainable building materials by recycling construction and demolition waste (CDW). Various waste materials such as ground granulated blast furnace slag (GGBS), class F and C fly ash (FA), recycled waste clay brick powder (RWBP), and waste concrete powder (WCP) were used to produce different alkali-activated composites along with recycled concrete aggregate. The prepared mixtures were analyzed for their fresh-state properties, as well as their physical and mechanical characteristics, including workability, strength, ultrasonic pulse velocity (UPV), and resistance to high temperatures. The findings indicate that mixtures with class C fly ash achieved higher compressive strength, whereas F class fly ash positively affected workability and high-temperature resistance. Slag effectively enhanced the compressive strength of the alkali-activated composites. In particular, the B3 mixture (20% class F fly ash, 40% slag) exhibited a balanced set of properties in terms of workability, compressive strength, and high-temperature performance. This study provides a valuable resource for producing alkali-activated composites from CDW and industrial waste, with the potential to reduce the environmental impact of the construction sector.
Anahtar Kelimeler
Alkali-activated composites | Fly ash | Ground granulated blast furnace slag | Recycled waste clay brick powder | Recycled waste concrete powder and aggregate