Progress in the influence of recycled construction and demolition mineral-based blends on the physical–mechanical behaviour of ternary cementitious matrices
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2022-08-15
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Abstract
The serious technical and environmental problems associated with the management of construction and demolition wastes (CDW) have led to a worldwide growing interest in the recycling of that waste stream as secondary raw material for sustainable building applications. This research work investigates the physical and mechanical behaviour of mortars made with ternary cements containing 7% of a binary recycled CDW mixture comprising the fine fraction (<5 mm) of recycled concrete waste (both siliceous and calcareous nature) in combination with recycled laminar glass in three different proportions (1/1, 1/2, and 2/1, respectively). To this end, the chemical composition and fineness of the anhydrous ternary cements were analysed, as well as their behaviour in paste and mortar matrices, in both fresh and hardened states, verifying the requirements established by the applicable standards. The results attest to the viability of using these ternary cements, as their performance is comparable to that of an ordinary Portland cement (OPC), without evidencing any significant dependence on the glass content. The compressive strength values decrease by 7–8% with respect to that of the OPC mortar, revealing the prevalence of the filler effect over the pozzolanic reaction. The ternary cements analysed in this study met the chemical, physical and mechanical requirements for the elaboration of future eco-efficient cements.
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Publisher Copyright: © 2022 The Author(s)
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CDW , Ternary cements , Physical properties , Mechanical behaviour , Standard requirements , CDW , Ternary cements , Physical properties , Mechanical behaviour , Standard requirements , Civil and Structural Engineering , Building and Construction , General Materials Science , SDG 12 - Responsible Consumption and Production , Funding Info , This research was funded by the Spanish Ministry of Science, Innovation and Universities (MICIU), the Spanish National Research Agency (AEI) and the European Regional Development Fund (ERDF), grant number RTI2018-097074- B-C21-22. The authors are also grateful for the support received from the Spanish Construction and Demolition Waste Recycling Association (RCDA), the Spanish Institute of Cement and its Applications (IECA) and Sika (Madrid, Spain). We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI). , This research was funded by the Spanish Ministry of Science, Innovation and Universities (MICIU), the Spanish National Research Agency (AEI) and the European Regional Development Fund (ERDF), grant number RTI2018-097074- B-C21-22. The authors are also grateful for the support received from the Spanish Construction and Demolition Waste Recycling Association (RCDA), the Spanish Institute of Cement and its Applications (IECA) and Sika (Madrid, Spain). We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).
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Monasterio , M , Caneda-Martínez , L , Vegas , I & Frías , M 2022 , ' Progress in the influence of recycled construction and demolition mineral-based blends on the physical–mechanical behaviour of ternary cementitious matrices ' , Construction and Building Materials , vol. 344 , 128169 , pp. 128169 . https://doi.org/10.1016/j.conbuildmat.2022.128169