Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The recycling of demolition materials: Basic properties of concretes with recycled aggregates from demolished buildings
Rather than putting waste in dumps, recycling has been encouraged in the world last few years owing to economical, political and ecological pressures. Several types of wastes are already being recycled. However their applications are still restricted. Everywhere buildings, public constructions or industrial premises are being demolished. Nowadays, these demolition materials find prospects in road construction, just like most wastes, and their use in hydraulic concrete is just being implemented. In France, per annum about 25 million tons of material demolished. Only 3 million tons are recycled, the rest (85 to 90 %) is still dumped at land fill sites. According to the French law of the 13th July 1992 on wastes elimination and materials recovery, it will be forbidden to put the largest part of the demolition materials in dump sites in 2002. Because of the recent law (07/13/92), but also due to critical difficulties in extracting of natural (primary) building materials in some regions of France, the percentage of recycled materials has to change. A large part of these waste materials can, after crushing and removing some impurities, be used to partly compensate the shortage of primary building materials. This paper presents the use of aggregates coming from demolished buildings. Our aim is to recycle the materials from a company located in the North of France (Recyclage des materiaux du Nord - RMN) in construction concrete keeping a strength of 25 MPa. Durability is assessed in terms of permeability, drying shrinkage and strength. The results show that the characteristics of recycled aggregates produced by the RMN company are very heterogenous. However, concrete made with these recycled aggregates has good mechanical performances and the compressive strengths obtained are superior to those aimed.
The recycling of demolition materials: Basic properties of concretes with recycled aggregates from demolished buildings
Rather than putting waste in dumps, recycling has been encouraged in the world last few years owing to economical, political and ecological pressures. Several types of wastes are already being recycled. However their applications are still restricted. Everywhere buildings, public constructions or industrial premises are being demolished. Nowadays, these demolition materials find prospects in road construction, just like most wastes, and their use in hydraulic concrete is just being implemented. In France, per annum about 25 million tons of material demolished. Only 3 million tons are recycled, the rest (85 to 90 %) is still dumped at land fill sites. According to the French law of the 13th July 1992 on wastes elimination and materials recovery, it will be forbidden to put the largest part of the demolition materials in dump sites in 2002. Because of the recent law (07/13/92), but also due to critical difficulties in extracting of natural (primary) building materials in some regions of France, the percentage of recycled materials has to change. A large part of these waste materials can, after crushing and removing some impurities, be used to partly compensate the shortage of primary building materials. This paper presents the use of aggregates coming from demolished buildings. Our aim is to recycle the materials from a company located in the North of France (Recyclage des materiaux du Nord - RMN) in construction concrete keeping a strength of 25 MPa. Durability is assessed in terms of permeability, drying shrinkage and strength. The results show that the characteristics of recycled aggregates produced by the RMN company are very heterogenous. However, concrete made with these recycled aggregates has good mechanical performances and the compressive strengths obtained are superior to those aimed.
The recycling of demolition materials: Basic properties of concretes with recycled aggregates from demolished buildings
Recycling von Bauschutt: Stoffeigenschaften von Beton, hergestellt mit Abrißmaterialien
Quebaud, M. (Autor:in) / Courtial, M. (Autor:in) / Buyle-Bodin, F. (Autor:in)
1997
8 Seiten, 3 Bilder, 5 Tabellen, 7 Quellen
Aufsatz (Konferenz)
Englisch
Construction and demolition waste as recycled aggregates in alkali-activated concretes
| BASE | 2019
Concretes with aggregates from demolition waste and silica fume. Materials and mechanical properties
| British Library Online Contents | 2008
Concretes with aggregates from demolition waste and silica fume. Materials and mechanical properties
| Online Contents | 2008