An 18″ concrete wingwall is placed for a flood control system. The air temperature is 38 F. According to Design and Control of Concrete Mixtures, the concrete for the wingwall should be what minimum temperature?
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windy city oil field, karamay, xinjiang, China
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Laying plastic pipes drainage to drain the water around the house of drainage system
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Concrete cube or construction brick and trowel. Construction concept and mason
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