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Cement temperature and loss of concrete

Cement temperature is too high, resulting in excessive loss of concrete slump.


A project in June C30 slab casting process, found concrete slump loss quickly, causing the inside of the drum concrete knot material.


Analysis: The investigation into the cement temperature of 80 ℃, cement and general partial small, resulting in increased water demand, resulting in excessive loss slump when there is insufficient water.


Preventive measures: in the summer season 5--10 months, to purchase directly from the cement or cement grinding station short-distance transport, each car must measure the temperature of the cement is less than 65 ℃.