With the rapid development of building construction, concrete pumping equipment has been widely used by construction units. However, in the concrete pouring operation, due to improper use, the phenomenon of equipment pipe blocking often occurs, which not only affects the progress of the project, but also directly affects the quality of the project.
Under normal circumstances, the concrete forms a cylindrical fluid in the center of the pumping pipe and flows in a suspended state. The surface of the fluid is coated with a layer of cement slurry, which is in contact with the pipe wall as a lubricant, and there is basically no relative movement between the aggregates.
When the movement of some aggregates in the coarse aggregate is blocked, the movement speed of the subsequent aggregates gradually slows down due to the influence, resulting in the formation of coarse aggregates in the pipeline, the mortar supporting the coarse aggregate is squeezed away, and the remaining gaps are filled by small aggregates.
In this way, the aggregate density increases, so that the aggregate in this section of the pipeline along the radial expansion of the pipeline, the cement slurry lubrication layer is destroyed, the movement resistance increases, the speed slows down, until the movement stops and blockage occurs.
