2. Example of lightweight plaster made from recycled polymers
2.1 Type of polymer used
In this manufacturing example, two different polyurethane foam grindings were used.
The first shred is identified by its gray color and comes from rigid foam scraps from the manufacture of insulating panels for car roofs. The panels have approximate dimensions of 1.60 × 1.00 m and a thickness of 1 cm. Prior to use, the material is stored indoors, where it is not exposed to the elements. The grey foam panels are ground and sieved through the Retsch SM100 mill using a 4.00 mm mesh sieve (figures 1 and 2 ).
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Example of lightweight plaster made from recycled polymers
Final properties
Bibliography
Websites
Buildex Inc. Haydite Expanded-Shale Lightweight Aggregate http://www.buildex.com/haydite.html (page consulted on September 10, 2011)
Standards and norms
- Plasterboard – Definitions, requirements and test methods - NF EN 520 - 2009
- Test methods for masonry mortars – Part 19: Determination of water vapor permeability of hardened plaster mortars - NF EN 1015-19/A1 - 2005
- Testing methods for natural stone – Determination of real and apparent densities and open and total porosities - NF EN 1936 - 2007
- Building materials and products – Hygrothermal properties...
Patents
ROMÁN ALEMA (B.), TORRES ZACARÍAS (P.). – Mortero de yeso con vermiculita expandida y aditivado, y procedimiento para su obtencion. Patent (Spain). ES2331043 B1 (2010).
WHINFIELD and DICKSON. – Improvements Relating to the Manufacture of Highly Polymeric Substances, British Patent 578,079,1941. Polymeric Linear Terephthalic Esters, U.S. Patent 2,465,319 (1949).
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