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Auch in Teil 2 werden verschiedene in der Literatur beschriebene Verwertungsvarianten vorgestellt. Die Eigenschaften von zu Recyclingbaustoffen aufbereitetem Mauerwerkbruch, die für die Verwer-tung ausschlaggebend sind, wurden dargestellt. Im ersten Teil dieses Berichtes zur Verwertung von Mauerwerkbruch wurde ein Überblick zu Anfallmen-gen, Verwertungsquoten und Einsatzgebieten gege-ben. Utilisation variants which were developed in own research projects are described in Part 3. Also in Part 2 introduce different utilisation variants described in the literature are. The properties of masonry rubble pre-pared as recycling construction materials, which are decisive for their utilisation, were discussed. In the first part of this report on the utilisation of masonry rubble, an overview was given of the quantities arising, utilisation quotas and fields of application. KeywordsPorosity-Density-Recycled aggregates-Construction and demolition waste-Concrete Industrial gravity separators may lead to the production of high quality recycledĪggregate from mixed C&D waste for structural concrete applications. This experiment, separation using a 2.2kg/dm³ suspension produced recycled aggregate (porosity less than 17%) which yielded Sink and float technique is a simple laboratory density separation tool thatįacilitates the separation of cement particles with lower porosity, a difficult task when done only by visual sorting. For concretes produced with constant volume fractions of water,Ĭement, natural sand and coarse aggregate from recycled mixed C&D waste, the compressive strength and Young modulus are directĮxponential functions of the aggregate porosity. Ratios were produced and the mechanical properties measured. Concretes using a variety of C&D aggregate porosity classes and different water/cement This paper investigates how the classification of C&D mixed coarse aggregate according to porosity influences

Techniques capable of reducing this variability is instrumental for quality control purposes and the production of high qualityĬ&D aggregate. Ve ermutlich siind sie in ei ner Gusstecchnik entsta anden bei deer zhflssiges Glas auf einee mit Sand bestreute nasse n Holzp latte. Highly variable, and this restricts the use of such aggregate in structural concrete production.

The properties of recycled aggregate produced from mixed (masonry and concrete) construction and demolition (C&D) waste are