What are the precautions for the operation of the concrete pump truck?
After pumping the water, use one of the following methods to lubricate the above parts: Pumping the slurry; pumping 1: 2 cement mortar; pumping the other ingredients in addition to the coarse aggregate and the ratio of the cement mortar.
After the start of the concrete pump should be pumping the right amount of water to wet concrete pump hopper, concrete tank and pipe and other direct contact with the concrete parts.
The minimum amount of cement in the pumped concrete is 300 kg / m3.Pumping concrete sand content should be 38% to 45%.
Fine aggregate should be used in the sand, through the 0.315m sieve sand should not be less than 15%.
