Pouring volumes of concrete for footings and suspended slabs was always a problem for construction workers. It was during the 1920s when builders decided to try a more efficient way of transporting concrete to high places or where space is limited. Fritz Hell, a German engineer, and his team were constructing a war memorial when the mast carrying the concrete suddenly smashed. Other engineers started developing Hell’s design until the mechanical device became popular during 1940s. Workers started using pump truck to transfer liquid concrete during construction of high buildings-this became especially helpful after World War II.
Valves: Concrete pumping equipment can function through hydraulically-powered valves or ball-checked valves. Hydraulic valves are capable of handling different cement mixtures and can pump up to 250 cubic yards of concrete per hour. Ball-checked valves, on the other hand, use balls and mating seats to control cement transfer from the hopper to the cylinder and pipeline. These are ideal for pumping smaller volumes of cements through thinner pipelines.
Cylinders: One cylinder connects to a hopper, while the other dispenses to the pipeline.
Pumps: The first designs were mechanical and have basic functions. Contractors pour cement into the hopper connected to the cylinders through a valve. The valve closes and a piston will push the cement into the pipeline. Hydraulic pumps, however, were later introduced and increased the efficiency of transferring liquid cement.
Pipeline: The pipeline must be robust and durable. It must also be light so contractors can easily carry it throughout the site. The pipeline consists of two parts: boom hose and discharge hose. The boom hose is made of steel alloy, while the discharge hose is made of lighter and flexible material.
Two Types Of Pump truck
Pump truck come in two types: boom truck and line pump. Boom trucks consist of a truck, frame, and the pump itself. These are ideal for pouring cement into slabs and medium high-rise buildings. These vary from single-axle truck mounted pumps, suitable for confined areas. These use a remote-controlled robotic arm, called a boom, to transfer cement accurately. These are suitable for large construction projects because they can pump at high volumes.
Another type of concrete pumping equipment is line pumps. These are also known as truck-mounted pumps because builders mount these on trucks or trailers. These have steel or rubber hoses manually attached to the machine’s vent. These also use ball-checked valves. These pumps are ideal for smaller construction projects like swimming pools, sidewalks, and ground slabs because they pump at lower volumes compared to boom trucks. Contractors also use these for grout, wet screeds, mortar, foamed concrete, and sludge.
Finding The Right Equipment
Choosing the right concrete pumping equipment is important. Workers need a machine that suits the specific job and budget. The following questions can help contractors decide on what pump to use for their construction:
– Can the pump handle the concrete mix?
– What type of valve does the equipment has?
– How far and how fast can it pump cement?
– Will standard pick-up trucks be able to tow the pump?