Missouri · answered by Verika · verified against sources
What air content is required for concrete on Missouri DOT projects?
For Missouri DOT projects, air-entrained concrete must have an air content target range of 4.5% to 7.5% by volume; field-measured air content must not exceed 9.0% or be below 4.5% (redosing allowed once per truckload if below 4.5%).
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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.