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

Abstract

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.