Kansas · answered by Verika · verified against sources
What are the rules for placing concrete in cold weather on Kansas DOT projects?
Stop concreting when air temp drops to 40°F; resume only when air temp reaches 35°F and is expected to exceed 40°F. Do not place concrete if air temp is below 20°F. Heat aggregates (not directly by flame) to 70–150°F if air temp is ≤35°F. Maintain mixed concrete temp between 50–90°F. Do not use frozen subgrade or aggregates. Adjust set time for SCMs.
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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.