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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1952 – <strong>Concrete</strong><br />
Air Entrained <strong>Concrete</strong><br />
• 1952 3-5%<br />
• 1956 4-6%<br />
• 1960 6±1%<br />
Mix Design<br />
• Absolute volumes similar to<br />
Class C mixes