Why concrete pump down to play always block the tube
Second, encountered the material to be expected or the process of removal of the pipe, a long time do not charge the material, etc. every 5 minutes or so will reverse the pump a few times to prevent the concrete pipe.
do not for the convenience of the construction to enlarge the slump, down to fight the concrete The greater the slump, the easier it is to block
In addition to pay attention to pipeline laying, there are also in the concrete pouring process should also pay attention to a certain amount of concrete slump can not be too large, 120-140mm on it
