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银川混凝土泵

银川混凝土泵

二、输送泵的正确应用方面

1、设计与安装管道时,应尽可能避免90°和S弯,以减少混凝土泵送阻力,防止堵塞。

2、压送应连续进行,若因某种原因压送中断时间超过30min或遇见压送发生困难时,输送泵应做间隔推动,每4~5min进行四个行程的正反转,防止混凝土离析或堵塞。

3、因坍落度对砼的可泵性影响最大,所以应尽量满足泵对坍落度的要求。

4、选用的骨料粒度应符合要求,一般不应大于输送管径的1/4。

5、当遇到混凝土压送困难,泵的压力升高,管路产生振动时,不得强行压送,应对管路进行检查,并放慢压送速度或使泵反转,防止堵塞。

6、添加合适的外掺剂、粉煤灰等也可提高可泵性,减少堵管的发生。

7、为防止堵管,喂料斗上应设专人将大石块及杂物及时捡出。

8、压送前应用适量的水湿润泵的料斗、泵室、管道等与混凝土接触部分,然后先送砂浆,后送混凝土,以防止堵塞。

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