Iowa · answered by Verika · verified against sources
What air content is required for concrete on Iowa DOT projects?
"Intended air e ntrainment of finished wet cast concrete is 6%. To allow for loss during placement, use a target value of 6.5% for air content of fresh unvibrated concrete, with a maximum variation of plus 1.5% and minus 1.0%." [5]
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Verika provides information with citations to help you find and understand the rules that apply to your work. It is not a substitute for professional engineering or legal judgment. Answer generated 2026-08-28; always confirm against the cited source for your project.