AT bauma, German construction equipment ace Putzmeister will showcase a selection of its extensive range of products that reflect their market-oriented technology, high level of efficiency and the top service provided by the company.

Putzmeister is one of the leading global providers of concrete pumps, tunnel machines, industrial pumps, mortar machines and professional high-pressure cleaners. Its portfolio of products promoted at this international construction showcase will comprise a choice of concrete pumps including its truck-mounted, compact and stationary models, its placing booms as well as the company’s innovative pumping solution for the precast concrete industry.

Pumps
With its truck-mounted concrete pumps, Putzmeister demonstrates not only innovations but also a cross-section of its tiered product range. The 70-m class as well as the M 58-5, which feeds concrete up to a height of almost 60 m, will be presented alongside the M 46-5 and the M 49-5 placing boom on a four-axle chassis, which was developed for demanding concrete pump operators in specialist export markets.
“M 46-5 is Putzmeister’s tribute to India, its partner country for bauma 2010. The placing boom is mounted on a semi-trailer and, in principle, can be licensed in many countries,” says a spokesman for Putzmeister. “The advantages of the truck-mounted alternative are obvious: Greater flexibility for the operator in choosing the tractor unit. For example, it could be a used unit or one with an older year of manufacture. The boom and concrete pump hydraulics are driven by a significantly smaller and, in particular, more economical independent power unit; and the tractor unit can also be used for other transportation jobs.”
Also showcased at the exhibition will be the compact truck-mounted all-rounder concrete pumps from the 20, 30 and 40 m classes with four or five flexible boom arms.
Putzmeister will present the M 42-5 model as an example of a particularly user-friendly truck-mounted concrete pump which is both suitable on construction sites and economical to run. The machine is equipped with numerous features such as wear-reducing components and fuel-saving hydraulic control. These include wear parts made of special hard metal alloys, the particularly abrasion-resistant two-layer delivery line, an electropneumatic shut-off device on the split end hose (prevents the concrete from dripping), active damping of the five-arm concrete placing boom (particularly effective at high outputs), a secure, one-sided support for construction sites with space restrictions, and an additional diesel tank in the support leg as well as hydraulic control.
Putzmeister’s stationary concrete pumps on show include its flagship high-performance BSA 14000 SHP D concrete pump, which has been designed to withstand extreme stresses in pumping concrete over long distances and to great heights.
Rounding off the range as the smallest concrete pump is the P 718 model. The extremely compact pump is mounted on a single-axle chassis which can be driven on roads, and was primarily designed for pumping fine concrete, liquid screed and suspensions.
However, as the delivery cylinder and S-transfer tube each have a relatively large diameter, the pump is also suitable for pumping concrete. The output on the P 718 can be infinitely adjusted up to 18 cu m/h while the maximum pump pressure is 70 bar. A lifting eye allows the machine to be moved quickly around the construction site.

Pumi truck mixer pumps
Meanwhile for the Pumi truck mixer concrete pumps, Putzmeister has developed several optional assistance functions, which can be selected via a radio remote control display. They include: maintaining a constant mixer drum speed that is independent of the speed of the vehicle’s engine (constant speed drive – CSD); synchronous mixer drum speed that is proportional to the current output of the Pumi concrete pump (synchronous discharging speed – SDS), which reduces fuel consumption and wear; automatic cleaning of the mixer drum while the Pumi pumps the concrete of another truck mixer, thus reducing waiting times (automatic drum cleaning – ADC).
Precast concrete
Designed for the precast industry is the Autocor BQ06, which represents different delivery systems that are used to pump even small quantities of concrete – including self-compacting mixture breakdowns – from the mixing plant to the formwork of the associated finished parts production unit in an economical manner.
“One of the major advantages of pump delivery as opposed to loading via crane buckets is that formwork with a curved surface, for example, can even be filled from below, by using a hose,” says the spokesman. “The result is a surface with no cavities, and high-quality, sharp edges, which means that potential refinishing work on the component is reduced to a minimum. According to feedback from operators at precasting works, the various Autocor systems can help to reduce production times by up to 60 per cent and increase the capacity of the plant.”

Project consultation
The spokesman continues: “A recognised Putzmeister feature and strength is its prognostic building project consultation for efficient pumping and distribution of concrete and other bulk materials, for demanding structural and civil engineering projects, embanking, tunnelling and mining.
As early as the quotation processing stage, Putzmeister collaborates with planners and operators to work out the site equipment and resource planning required for concrete delivery, taking into consideration the planned construction processes, deadlines, provision reliability while paying close attention to the omnipresent cost pressures.”