Feasibility of the use of mineral wool fibres recovered from CDW for the reinforcement of conglomerates by study of their porosity

•The addition of mineral fibres waste does not affect the functionality of mortars.•The porous structure of admixed fibres mortars is similar to that of the reference.•Waste mineral fibres are an alternative to current commercial reinforcements.•Mortars reinforced with mineral fibres waste minimize...

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Bibliographic Details
Published in:Construction & building materials 2018-12, Vol.191, p.460-468
Main Authors: Piña Ramírez, Carolina, Atanes Sánchez, Evangelina, del Río Merino, Mercedes, Viñas Arrebola, Carmen, Vidales Barriguete, Alejandra
Format: Article
Language:English
Subjects:
Building materials
Conglomerates
Construction and demolition waste
Green construction
Masonry
Materials
Mineral wool
Mortar
Planning
Recycling
Sustainable construction
Waste management
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Summary:•The addition of mineral fibres waste does not affect the functionality of mortars.•The porous structure of admixed fibres mortars is similar to that of the reference.•Waste mineral fibres are an alternative to current commercial reinforcements.•Mortars reinforced with mineral fibres waste minimize environmental impact. Mineral wool is currently the most used insulation in the European Union, and quantities of this waste have increased alarmingly in the last decade, making it essential to recycle or reuse the material, which is not current practice. This study aims to verify the feasibility of compounds of a cement base with additives of insulating mineral fibre residues recovered from the recycling of construction and demolition waste (CDW). For this purpose, experiments were designed to classify the physical–chemical behaviour of architectural mineral wool waste, and that of mortars incorporating them to determine their porosity due to the effects of these fibres on the properties of the compounds. The results obtained show that both the structure and chemical composition as well as the microstructure of the reinforced mortars are viable, and that they would therefore be a sustainable alternative to the current mortars of composite materials.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2018.10.026