5. Conduits
Two very different manufacturing methods are used for the ducts, depending on whether they are of the storey-height type or higher (up to 6 m) or of the manuportable type, often limited to a height of 0.33 m.
When used for ventilation, ducts are often made from standard aggregate concretes. In the case of smoke ducts, concrete made from pozzolan or expanded clay aggregates is often used.
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For floor-level ducts, production is carried out in a horizontal position, using metal molds and cores (figure 27 ). The latter have a draft of around 1% along their length to facilitate extraction from one end.
Once the reinforcement...
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Conduits
Cement-glass composite elements
Bibliography
Reviews
BFT Betonwerk + Fergtigteil –Technik http://www.bft-online.info
CONCRETE PRODUCTS http://www.concreteproducts.com
BETON Belge http://www.febe.be
...
Main manufacturing standards
- Règles communes pour les produits préfabriqués en béton, décembre 2004 - NF EN 13369 -
- Concrete – Performance, production, implementation and compliance criteria, April 2004 - NF EN 206-1 -
For information on the standardization of concrete products, concretes and raw materials, see the Standardization section (constantly updated) of the website
Associations federations
ASSOBETON Associazione nationale industrie manufatti cementizi http://www.assobeton.it
BLOCALIANS Le bloc béton http://www.blocalians.fr
Main machine suppliers
Suppliers of vibratory presses for concrete blocks
Exhibitions
BATIMAT International Construction Exhibition Paris Nov. 2005 http://www.batimat.fr
BAUMA International Faschmesse fur Baumaschinen Munich April 2007 http://www.bauma.de
CONSTRUMAT International Construction Exhibition Barcelona April 2005...
Congress
International Congress of the Concrete Industry BIBM Amsterdam 2005, Vienna 2008 http://www.bibm.org
International concrete conference and exhibition ICCX Berlin 2006 http://www.iccx.org
ULM concrete and precast conference ULM Germany February 2006...
Organizations
AFNOR Association Française de Normalisation http://www.afnor.fr
AFCAB Association Française de Certification des Armatures du Béton (French Concrete Reinforcement Certification Association) http://www.afcab.com
BIBM Bureau International du Béton...
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