在混凝土冬季施工中,采用热水拌和与掺低温早强剂联合应用的措施,有利于混凝土的早期强度增长和防冻。拌和水温一般控制在60℃以下,不宜过高。有一次我局某工程处对水温控制不严,水温过高,由于此时混凝土中还掺有低温早强剂,因此产生了速 In the winter construction of concrete, the combination of hot water mixing and low-temperature early-strengthening agent is beneficial to the early strength growth and antifreeze of concrete. Mixing water temperature is generally controlled below 60 °C, not too high. On one occasion, the Office of the People’s Republic of China had lax control over the water temperature and the water temperature was too high. Because the concrete was still mixed with cryogenic early strength agent, the speed was increased.