[Ferro List] E-Spheres’

[xoutpost at netscape.com]

http://www.abilityproducts.com.au/admixtures/afc_espheres.html



Why are they better than aggregate in concrete?
There are numerous reasons, and they start with convenience. Because ‘E-Spheres’ are lightweight they are easy to carry and transport. They are exceptionally resistant to high temperatures, fire, strong chemicals, impact and wear. They insulate effectively against temperature variations and noise, as they deaden sound. They have the capacity to reduce binder shrinkage, a factor of concrete that causes cracks. Because of their shape, the ‘E-Spheres’ have less drag than aggregate, so they improve the flow and thus the workability of the unset concrete, making it easier to pump and extrude, if necessary and in shotcrete (projected concrete) applications. In most cases, these features result in reduced cost because the composite can be made with less binder for the same characteristics and performance

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