Analysis of the mechanical behaviour of the cement mortars with additives of mineral wool fibres from recycling of CDW

• Published in: Construction & building materials Vol. 210; pp. 56 - 62
• Main Authors: Piña Ramírez, Carolina, del Río Merino, Mercedes, Viñas Arrebola, Carmen, Vidales Barriguete, Alejandra, Kosior-Kazberuk, Marta
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 20.06.2019; Reed Business Information, Inc. (US)
• Subjects: Construction and demolition waste; Demolition; Microscopy; Mineral wool; Mortar; Properties; Recycling; Sustainable construction; Valuation; Spain; Construction and demolition waste; Mineral wool; Mortar; Recycling; Sustainable construction
• ISSN: 0950-0618; 1879-0526
• DOI: 10.1016/j.conbuildmat.2019.03.062

•Waste mineral fibres are an alternative to current commercial reinforcements.•Mortars reinforced with mineral fibers waste minimize environmental impact.•There is a good connection between the cementitious matrix and the residues.•It is possible to replace large amount of the volume of sand used by mineral fiber waste. This research analyses the viability of the valuation of mineral wool waste from construction and demolition waste (CDW) as reinforcement of cement matrices. The objective is to analyse the mechanical behaviour of a material composed of a cement mortar matrix to which the aforementioned waste is incorporated. For this purpose, an experimental plan is made in which cement mortar specimens are made with different % of different types of waste, on which Shore D surface hardness, Module of Young, fracture energy, flexural and compressive strength and microscopy tests are carried out, to evaluate their viability as a reinforcement material. The results of the tests show that although the mechanical resistance decreases there is a good connection between the cementitious matrix and the waste resulting in a sustainable alternative to the fibres used today.