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2. Lightweight aggregates used in mortars and concretes
2.1 Traditional lightweight aggregates
This lightweight aggregate is obtained by subjecting clays to a high-temperature firing process (1,200°C), transforming them into spherical, porous, low-density aggregates. The interior of this expanded clay is made up of cells, created by the formation of air microbubbles. This microstructure confers high insulating power, making it ideal for use in insulation elements, lightweight blocks and prefabricated buildings
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Lightweight aggregates used in mortars and concretes
Examples of mortar production using recycled polymers
Bibliography
Websites
Buildex Inc. Haydite Expanded-Shale Lightweight Aggregate. http://www.buildex.com/haydite.html (page consulted on September 10, 2011).
Standards and norms
- Tests to determine the geometric characteristics of aggregates – Part 1: Determining granularity – Particle size analysis by sieving. - NF EN 933-1 - 2012
- Tests to determine the geometric characteristics of aggregates – Part 2: Determining granularity – Test sieves, nominal opening dimensions - NF EN 933-2 - 1996
- Cement – Part 1: composition, specifications and conformity criteria for common cements - NF...
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Départemento de Construcciones. Anquitectonicas e Ingenieria de la Construccion y del Terreno http://www.ubu.es
GeM, UMR CNRS 6183 Research Institute on Civil Engineering and Mechanics University of Nantes – IVT Saint Nazaire http://gem.ec-nantes.fr
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