The climate characteristics of autumn show significant changes in temperature, humidity, and wind speed (daily average temperature of 5-20 ℃, temperature difference between day and night of 8-15 ℃, relative humidity of 40% -80%), which directly affects the concrete from mixing, pouring, curing to hardening and forming.
According to the “Winter Construction Regulations for Building Engineering” (JGJ/T104-2011), concrete quality problems caused by climate factors in autumn account for more than 35% of the total annual amount, with particularly prominent issues such as cracks, insufficient strength, and surface defects.
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