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为了缩短铝酸盐自应力管的水养时间,往往采用40℃温水养护,使水养期由21～28天缩短至7天。这是加速养护池周转的一项有效措施。同时还能提高管子的自应力值和强度。但是,温水养护耗热量大、用汽量多,煤耗显著增加。这一措施在冬季气温低、热源比较紧张的情况下,就难以采纳。即使采纳,生产成本就会明显提高,经济效益受到影响。温水养护能提供两个条件:一是使管子外表面及管壁混凝土内部都有充分水分,有
In order to shorten the water retention time of the aluminate self-stress pipe, the water temperature is often maintained at 40°C, which shortens the water period from 21 to 28 days to 7 days. This is an effective measure to accelerate the turnover of the conservation pool. At the same time, it can also increase the self-stress value and strength of the pipe. However, warm water conservation consumes large amounts of heat and steam, and coal consumption increases significantly. This measure is difficult to adopt when the temperature in winter is low and the heat source is relatively tight. Even if adopted, the cost of production will be significantly increased and the economic benefits will be affected. Warm water conservation can provide two conditions: one is to make the outer surface of the pipe and the concrete inside the pipe wall have sufficient moisture.