History of Concrete Paving In Iowa - Iowa State University Extension ...
History of Concrete Paving In Iowa - Iowa State University Extension ...
History of Concrete Paving In Iowa - Iowa State University Extension ...
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Maturity Method to<br />
Determine Opening<br />
• Prior to utilizing maturity<br />
method – opening strength<br />
determined by beam break and<br />
5 to 7 days<br />
• 1995 Research in Lee County<br />
• 1997 -Contractor’s option to<br />
use maturity method <strong>of</strong> opening<br />
• <strong>Iowa</strong> one <strong>of</strong> the first states to<br />
implement the method for<br />
opening
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