Ergebnisse einer Befragung zum Umgang mit Porenbetonabfällen aus dem Abbruch von Gebäuden

Abstract

Survey Results about the Handling of Aerated Concrete from the Building DemolitionOver the past few years increased quantities of construction waste from high-rise buildings have been recycled. However, some types of building material are still not reused as secondary building material or in new products. One such material is autoclaved aerated concrete. This article provides an overview of the state of knowledge on the recycling of autoclaved aerated concrete, and presents the results of a survey conducted concerning German demolition companies' handling of autoclaved aerated concrete waste.

Neue Recyclingbaustoffe aus Porenbetonbruch: In Werktrockenmörteln für Mauerwerk, in Mauersteinen und in leichten Schaumsteinen

“…At present, it is assumed that the annual amount of AAC demolition waste is about 0.5 to 1.0 million tons [1], however, larger amounts are expected for the future. The surveys carried out by Stier and Forberger [2] assess possible amounts even up to 2.05 million tons per year. Precise values for the amounts of AAC waste are not defined in existing statistics and can only be estimated because there is no specific waste key number for AAC.…”

Zerkleinerung von Porenbeton in konventionellen Zerkleinerungsmaschinen der Bauschuttaufbereitung

“…Stier und Forberger kommen im Ergebnis ihrer Befragung von Entsorgungsunternehmen im Berichtszeitraum 2014 dagegen schon auf eine jährliche Porenbetonabfallmenge in Deutschland in Höhe von bis zu 2,7 Mio. t a −1 6. Das von Steins at al 7 entwickelte Vorhersagemodell sagt Abbruchvolumen von ca.…”

“…eine ja ¨hrliche Porenbetonabfallmenge in Deutschland in Ho ¨he von bis zu 2,7 Mio. t a -1 [6]. Das von Steins at al [7] entwickelte Vorhersagemodell sagt Abbruchvolumen von ca.…”

Autoclaved aerated concrete (AAC) rubble for new recycling building products: In dry premixed mortars for masonry, in masonry blocks, and in lightweight blocks

“…At present, it is assumed that the annual amount of AAC demolition waste is about 0.5–1.0 million tons , however, larger amounts are expected for the future. The surveys carried out by Stier and Forberger assess possible amounts even up to 2.05 million tons per year. Precise values for the amounts of AAC waste are not defined in existing statistics and can only be estimated because there is no specific waste key number for AAC.…”