due to the influence of external environment, the temperature should not be too low, and it should be above ℃ as far as possible. Water should be directly poured on the concrete to ensure the humidity.
if there is a problem with the quality of raw materials, don't buy cement that is caked or wet.
foundation settlement can also lead to concrete cracking. When pouring mass concrete, the hydration heat generated in it will increase the temperature of concrete, and the resulting deformation may be constrained by the existing structure or formwork, thus generating constraint stress. After concrete pouring is completed, the temperature rise will cause the expansion and deformation of concrete.