Recycled mortars for building construction

phys.org | 9/7/2016 | Staff
liizu (Posted by) Level 3
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A study carried out by researchers from the School of Building at Universidad Politécnica de Madrid (UPM) has shown how mineral wool waste can be a suitable alternative to the reinforced fibers currently used in building materials.

Besides, they improved mechanical and thermal properties of the added products, avoiding their storage in landfills. The result is a new cement mortar that reuses insulating materials and reduces the use of sand, what it helps implement the criteria of circular economy in the construction sector.

Construction - Problem - Construction - Demolition - Waste

Building construction generates a serious environmental problem so the resulting construction and demolition waste (CDW) can be used to replace part of the raw building materials. In particular, mineral wool waste from the insulation of homes has increased in recent years due to the increment in thermal and acoustic requirements. Up to 0.2 percent of the volume of all CDW generated are mineral wool, accounting for 60 percent of the insulating materials used in construction. It is also estimated that in 2020, more than 2.5 million mineral wool waste will be generated in the EU-28 zone, characterized by its difficult reuse, low recycling rate and forms of recovery.

A team of UPM researchers has been studying for years how to recycle from construction materials to build houses. In this way, they found out that both the chemical structure and the microstructure of mortars that add recycled fibers are similar to the mortars without such fibers. That is, there is no significant change caused by the adding fibers that affect the functionality of...
(Excerpt) Read more at: phys.org
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