Reactivity in cement pastes bearing fine fraction concrete and glass from construction and demolition waste: Microstructural analysis of viability

Reactivity in cement pastes bearing fine fraction concrete and glass from construction and demolition waste: Microstructural analysis of viability

Converting construction and demolition waste (CDW) into secondary raw materials is one of the priorities of environmental policy and circular economy strategy. This study analysed the variation in eco-efficient paste reactivity with OPC replacement ratio (5% to 10%) and hydration time (2 d, 28 d and...

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Veröffentlicht in:Cement and concrete research 2021-10, Vol.148, p.106531, Article 106531
Hauptverfasser: Frías, M., Martínez-Ramírez, S., de la Villa, R. Vigil, Fernández-Carrasco, L., García, R.
Format: Artikel
Sprache:eng
Schlagworte:
Cement paste
Cements
Concrete construction
Construction and demolition waste
Demolition
Eco-cements
Ettringite
Gels
Hydration
Microstructural analysis
Mineralogical phases
Raw materials
Reactivity
Recycling
Safety glass
Viability
Waste disposal
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Zusammenfassung:Converting construction and demolition waste (CDW) into secondary raw materials is one of the priorities of environmental policy and circular economy strategy. This study analysed the variation in eco-efficient paste reactivity with OPC replacement ratio (5% to 10%) and hydration time (2 d, 28 d and 90 d). Three types of CDW were explored: two (calcareous and siliceous) consisting of fine (
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2021.106531