additional info on how "Cool Play" works......
FlagCat (Registered; 1613)
Posted on: 01-31-2013.
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Apparently the trick is cork as an infill under the surface. The cork retains enough moisture so that as the temperature rises, the moisture in the cork evaporates which cools the turf. Evaporation of moisture is also the reason natural grass stays cool. Natural turf emits water vapor through the surface of each blade of grass as well as the soil underneath, so obviously you wouldn't expect this to be anywhere as cool as natural turf, but it sounds like a pretty decent improvement over artificial turf without this infill. I haven't come across any actual performance data on turf with cork, though.
Another bit of interesting info is that the cork needs to retain at least a 4% moisture level. The linked article says this is "a condition achieved naturally throughout most of the country via rain and humidity absorption." But in the arid Southwest, the moisture content will have to be "supplemented". So the Arizona Stadium field will still need to be irrigated, apparently. I'm sure it won't be anywhere near what you need to irrigate a natural field, and the monsoon may elimiate the need in August and early September. Interesting stuff...
Edited by FlagCat at 1/31/2013 5:17:57 PM
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