Page 52 - Built Expressions - Online Construction Magazine - November 2014 Issue

Cover Feature Concrete dumpers concretepumping.com Concrete Pumps cwplant.co.ukwp • Concrete dumpers- Concrete Dumpers are used to carry mix from concrete mixer to site. Mixer is kept near the site from the concrete dumpers. These are used for short leads only. This Dumper may be two wheel or four wheel drive propelled terms of their delivery. Depending on projects. They range from single-axle by diesel engine has a low centre of the way the concrete is transported, truck mounted pumps used for their gravity. concrete pumps are classifed in two high maneuverability, suitability for basic types; the boom pump and the confned areas, and cost/performance • Concrete Pumps- Concrete line pump. value, to huge, six-axle rigs used for Placement Speed is always an The boom pump uses a remote their powerful pumps and long reach important factor and one of the controlled robotic arm to place on high-rise and other large-scale benefts of using concrete pumping concrete where it needs to go, and projects. is that it helps to place the concrete they’re often used in large construction Booms for these trucks can come more accurately without involving projects. Boom pumps are able to in confgurations of three and four much of a labour. Since the cohesive pump concrete at high volumes and sections, with a low unfolding nature of the concrete mix is one of are extremely accurate, which is why height of about 16 feet. This low the necessities for mixing, we are they are used for larger projects. unfolding height is ideal for placing assured of a good concrete. In case concrete in confned areas. of high rise buildings, multi-stage • Placer Booms- Placer Booms are Longer, fve-part booms can reach up pumps are also used. There are many self-contained units consisting of or out more than 200 feet. projects where the concrete pump is a truck and frame, and the pump Because of their reach, boom directly placed below the batching itself. These are used for concrete trucks often remain in the same place plant and the concrete pipe line is pours for everything from slabs and for an entire pour. This allows ready connected to the location of pour. medium high-rise buildings, to large mix trucks to discharge their loads Capacities of these pumps vary in volume commercial and industrial directly into the pumps hopper at one central location and helps to create a more effcient jobsite The fat, low-profle cutter head minimizes traffc fow. Transit Mixers disturbance of the face as it bores and prevents large blocks from collapsing and causing • Line Pumps- These pumps require steel or rubber concrete placing hoses excessive boring stresses. to be manually attached to the outlet of the machine. Those hoses are linked together and lead to wherever the concrete needs to be placed. Line pumps normally pump concrete at lower volumes than boom pumps. The capacity of the pump varies from model to model and depends on the volume of concrete it delivers at the end point per hour. PG 52 Built ExpressionsBuilt Expressions Vol: 3 Issue: 11 November 2014 PG 52