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Question
What is key principle of adding cooling pipes or yet using cold water for concrete in concreting operation?
Answer
These methods aim at reducing placing temperature and falling thermal cracks induced during concreting of enormous pours. Because final concreting temperature has to be ambient temperature, reducing initial placing temperature will also lower peak hydration temperature. Therefore, temperature divergence between hydration peak and ambient temperature is reduced so and subsequently thermal effect to concrete structure can be abridged by controlling placing temperature.
What would be the best way to evaluate the field performance benefits of subsurface drainage in a flexible pavement? Short term and long term, thick or thin HMA..
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mechanism of different types of concrete mixers
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