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What are the rules for placing concrete in cold weather on Mississippi DOT projects?

Cold weather concreting on Mississippi DOT projects requires: (1) Concrete delivery temp limits per Table 8 (e.g., 55–75°F for <12" thickness) [1]. (2) Protection for 4+ days at 50–100°F if temps <40°F post-placement [1]. (3) Heating of aggregates/water (max 100°F) or insulating blankets; no salts [1]. (4) Ice/frost removal from forms/reinforcement [1]. (5) Approved maturity meters or insulating blankets for strength verification [1]. (6) Contractor assumes all risk/costs for unsatisfactory results [2]. (7) For ground-contact concrete (e.g., footings), follow Subsection 501.03.20.3 [2].

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