A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Solid aluminium cladding sheets versus aluminium composites. A technical comparison
Uneven surface appearance and comparatively high prices of solid aluminium sheet has led to the development of the aluminium composite panel. A plastic core (around 3 mm in diameter) is covered by a 0.5 thick pre-painted Al sheet on either side. At present, aluminium composite panels are an apt solution for interior applications, but it also became a practice to apply those composite panels for external facade claddings, even for high-rise buildings. The increase in the number of suppliers has led to a drop in the price level for Al composite panels. So manufacturers compromise on quality standards from raw materials (Al alloy and core material) and reduce the thickness of the exterior metal sheets. There are four main technical criterions which allow a fair comparison of the performance of solid Al sheets versus composites: fire behaviour (combustibility, toxic gas and smoke development), mechanical properties (especially after bending), recycling, insulation and sound-deadening. The results favour the solid Al sheets. As an environmentally friendly next generation material is a pre-painted (wet paint or powder) 2 and 3 mm thick solid Al sheet in alloy AA5754 presented. With improved production technologies and new industrial machinery, superior flat solid sheets especially designed for architectural purposes are available.
Solid aluminium cladding sheets versus aluminium composites. A technical comparison
Uneven surface appearance and comparatively high prices of solid aluminium sheet has led to the development of the aluminium composite panel. A plastic core (around 3 mm in diameter) is covered by a 0.5 thick pre-painted Al sheet on either side. At present, aluminium composite panels are an apt solution for interior applications, but it also became a practice to apply those composite panels for external facade claddings, even for high-rise buildings. The increase in the number of suppliers has led to a drop in the price level for Al composite panels. So manufacturers compromise on quality standards from raw materials (Al alloy and core material) and reduce the thickness of the exterior metal sheets. There are four main technical criterions which allow a fair comparison of the performance of solid Al sheets versus composites: fire behaviour (combustibility, toxic gas and smoke development), mechanical properties (especially after bending), recycling, insulation and sound-deadening. The results favour the solid Al sheets. As an environmentally friendly next generation material is a pre-painted (wet paint or powder) 2 and 3 mm thick solid Al sheet in alloy AA5754 presented. With improved production technologies and new industrial machinery, superior flat solid sheets especially designed for architectural purposes are available.
Solid aluminium cladding sheets versus aluminium composites. A technical comparison
Pohl, Fred-Roderich (author)
International Aluminium Journal ; 83 ; 72-75
2007
4 Seiten, 5 Bilder
Article (Journal)
English
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