New Plaster Composite with Mineral Wool Fibres from CDW Recycling

Abstract

Over the last decade the intense activity of the building sector has generated large quantities of construction and demolition waste (CDW). In particular, in Europe around 890 million tons of CDW is generated every year; however, only 50% of them are recycled. In Spain, over the last years 40 millions of tons of construction and demolition waste have been generated. On the other hand, since the implementation of the Technical Building Code regulation the use of mineral wools as building insulation materials has become a widespread solution in both rehabilitation and new construction works, and because of that, this kind of insulation waste is increasing. This research analyzes the potential of a new composite (gypsum and fiber waste) including several mineral wools waste into a plaster matrix. For this purpose, an experimental plan, characterizing the physical and mechanical behaviour as well as the Shore C hardness of the new composite, was elaborated fulfilling UNE Standards.

Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

“…With the addition of mineral wool fibers, the greater the content of mineral wool fibers, the less the flexural strength. Although works show that mineral wool fibers can increase mechanical strength [50][51][52][53][54][55][56][57][58][59] when replacing cement, sand or aggregate, they were added and mixed with cement and sand.…”

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

“…Specifically, mineral wool is currently the most used insulation in the European Union; thermal and acoustic insulation solutions for buildings have been designed using toxic or hard-to-recycle mineral wool [11], and this is still the case today. Thus, the amount of waste rockwool dumped in landfills has increased dramatically in the last decade [12], making it essential to recycle or reuse the material.…”

Entwicklung innovativer Recyclingverfahren für Mineralwolleabfälle – Projekt RecyMin

“…Die Zugund Druckfestigkeit, Absorptionsfähigkeit, Widerstandsfähigkeit und Chloridbeständigkeit wird durch eine Zugabe als grobe Körnung verbessert und die Rissausbreitung gehemmt [8]. Auch die Härte von derartigen Verbunden wird durch eine Zugabe erhöht [18].…”