As for the reasons why the concrete pump is blocked, the following reasons may be considered comprehensively:
1. Improper operation can easily cause pipe blockage: This is related to the pumping speed (slow down the speed appropriately at the beginning, and then increase the pumping speed after the pipeline resistance drops), the amount of remaining material in the hopper (the amount of remaining material in the hopper is too large) It is easy to inhale air and cause the pump to be blocked), the length of the pump stop time (the pump stop time is too long and the pump is likely to be blocked due to the decrease in pumpability of the concrete), the pipeline cleaning situation (the pipeline cleaning is not thorough, it is easy to increase the pumping due to foreign matter in the pipeline) Resistance leading to blockage of the pump), etc.
2. There may be problems with pipeline connections: try to shorten the length of the pipeline and reduce the number of elbows, so as to reduce the size of the pipeline resistance.
3. Pump blockage caused by segregation of concrete or mortar; too little mortar for lubricating the pump often affects the smooth progress of pumping. ;
4. Pump blockage caused by unqualified concrete: Are the sand rate and aggregate gradation reasonable? The amount of cement should be within the appropriate range. If the amount of cement is too small, it will affect the suction performance of the concrete. If the amount of cement is too large, the viscosity of the concrete will increase, and the pumpability will also be poor. Use admixtures rationally. The amount of admixtures should be within a reasonable range. Too much or too little admixture has an impact on the pumpability of concrete.
The above are several reasons that are more likely to cause pump blockage. During the actual preparation and pumping construction process, strictly follow the Operating according to relevant standards for pumping concrete will fundamentally reduce the possibility of pump clogging. </p
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