The Danish government has approved the project of building a green energy centre in the North Sea, 80km far from the coast. The environment minister of Denmark, Don Jørgensen, says that this project is a big opportunity for the country and for the ecologic world transition.
The Polytechnic University of Madrid (UPM) develops new cement mortar using recycled materials for the construction of houses, that demonstrate a high capacity for fire resistance.
For years, the European Community promotes an initiative to the European Institutions and the Members States, based on the new legislative framework of circular economy, to recycle, reduce and value waste with the aim of cut down on the primary materials. The Research Group on Building Technology and the Environment (TEMA), of the Higher Technical School of Building (ETSEM) of the UPM, has been testing eco-efficient mortars to reduce the environmental impact of the materials used in the sector of construction. This group demonstrated in its various studies that the mortars with recycled fibres offer resistance, absorption and permeability values, exceeding the minimums required by current regulations and there are very similar to the values of mortars with commercial fibres.
In the latest study, researchers of the Polytechnical University of Madrid (UPM) analyse the behaviour against the fire of cement mortars added with mineral wool from construction and demolition waste. The results obtained indicate that the recycled mortars have good behaviour against fire. The incorporation of the residues allows maintaining adequate mechanical properties and avoiding the explosive detachment behaviour of mortars. They have also shown that cement mortars with mineral wool residues do not burn, do not add more load to the fire, and do not release gases or asphyxiating fumes in the case of a fire.
In conclusion, it can be affirmed that incorporation of mineral wool residues as a reinforcement in cement mortars is a feasible alternative in terms of their behaviour against fire, in addition to improve the mechanical-thermal behaviour after a fire and being a sustainable alternative that allows reducing up to 50% of the volume of the sand used. They have also shown that cement mortars with mineral wool residues do not burn, do not add more load to the fire, and do not release gases or asphyxiating fumes in the case of a fire.
Source: Universidad Politécnica de Madrid (5 de abril del 2021). “Nuevos morteros para la construcción, sostenibles y resistentes al fuego” [Blog]. Recuperado de: https://www.upm.es/Investigacion?id=b0630d3257e68710VgnVCM10000009c7648a____&prefmt=articulo&fmt=detail
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