<http://schema.org/alternativeHeadline>
"Hycrete displayed its lineup of waterphobic concrete admixtures at Greenbuild 2009 last week in Phoenix."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/money/green-workplace/blogs/hycrete%27s-innovative-waterphobic-concrete-admixtures>