Transportation of concrete mix

Methods for transporting concrete to the place of its installation depends on several factors: the distance of transportation, time of year (weather permitting), composition (quality) of concrete.

At present, the concrete mix from the site preparation to the place where it lay in the design of cars, trucks, special vehicles, truck mixer, the buckets (bins), truck (mixer). For transporting the concrete mix used as conveyor belts and pipelines in conjunction with concrete.

During transportation in order to maintain uniformity (exclusion of the bundle) and the mobility of the concrete mix should be protected from ingress of precipitation, the harmful effects of wind and sunlight, as well as leakage from laitance. In winter, the concrete mix during transport should be protected from freezing. For this purpose, use specially insulated modes of transport. In addition, the concrete mix should be delivered to the place of installation without intermediate overloads.

Any method of transporting the concrete mix should be protected from excessive shaking to prevent delamination. The duration of transport from the place of a mixture of cooking to the point of installation shall not exceed one o'clock (from the time of discharge from the mixer until the seal).

Based on these conditions and made ​​different types of transport.

Dump trucks, as well as tubs and containers can be used for transport of concrete mixtures at a distance of 10-30 km. At the same time more appropriate to use trucks with large volumes of concrete work and discharge the mix directly into the formwork, ie, during the concreting of structures, approximately at ground level and the tub - during concreting of structures located above ground level.

Concrete Delivery Truck - these are the same trucks and rational field of application is the same. It differs from a generic dump body structure: first, from the closed, second, the body shape makes it easy to unload and virtually eliminates sticking in the corners of the concrete mixture in the absence of recent.

Truck mixers – are special, qualitatively different form of transport, and therefore more expensive. This is essentially a concrete mixer on wheels, capable of stirring during transportation, and hence no danger of separation. It can carry not only ready-mixed concrete, dry mixes and adding them directly to the water at the entrance to the building site that is almost unlimited potential increases from a technical point of view, the distance traveled.

The method of transporting the pipes is particularly effective to move the concrete within the construction site. It is particularly well has been applied in conjunction with the Concrete Delivery Truck or truck mixers and concrete pumps.

When the amount of stacking up to 80 cu. m of concrete to replace the use of concrete pumps, which are equipped with hoppers, transfer pump and boom. Concrete mix is fed into the vertical (80 m) and horizontal (360 m) directions. At construction sites with a need for more than 80 cu. m of concrete per shift, as well as high-rise buildings (more than 20 floors) used stationary concrete pumps complete with concrete-distributing. Loader with boom and 60 m, mounted on the building-mounted or auxiliary support. Concrete bunker is connected to the paver with a vertical pipeline that comes and mix. On the one parking lot paver by laying concrete on several levels. On to the next parking lot paver, whose mass is 6.1 m, mounted on the object is moved by crane mounting, Delivery line lengthens and the concrete mix is fed to the newly erected tiers of the building.

When using the pipeline becomes topical application of cast concrete mixes, concrete overrun which excluded the use of super-plasticizers.

All piping, pumps, hoppers, stackers after pumping concrete mixture washed with water. Disposal of wash water often becomes difficult to solve problems at the construction site.

Pumping through pipes using pumps with mechanical drive, hydraulic (piston) and pneumo-pumps.