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READYMIX CONCRETE172 CPI %u2013 Concrete Plant International %u2013 3 | 2025 www.cpi-worldwide.comConcreting in existing buildings, tunnels and halls as well as in bridge construction is particularly challenging due to the confined spaces and low ceiling heights. A working area that is as flexible as possible, precise movements of the boom arm and sufficient storage space for hoses and pipes are extremely important. Liebherr offers two powerful truck-mounted concrete pumps for this application: the 24 XH and the new 31 XXT. Both the 24 XH and the 31 XXT truck-mounted concrete pumps impress with their compact design and low unfolding height. Due to the primary area of application of both types on construction sites in buildings, tunnels and halls, hose and piping storage is of central importance for the smaller size classes. Concrete pipes and concrete distribution systems are often used for concrete placement. These must then be stowed on the machine to save space and time. The newly designed hose and piping storage systems for Liebherr truckmounted concrete pumps allow the best possible customization options and ensure convenient and safe storage. Truck-mounted concrete pump 31 XXT The newly developed 31 XXT is a versatile truck-mounted concrete pump. The pump shows its great potential particularly in construction work with a restricted working area. The compact design ensures manoeuvrability and clarity, especially indoors. The five flexible arms paired with the tried-andtested XXT outriggers make the 31 XXT particularly suitable for confined construction sites and concreting jobs that require a low unfolding height. The low unfolding height of just 5.4 m makes the 31 XXT uniquely flexible for indoor use. Another highlight for working indoors is the new LiDriveIn function. It allows you to drive into a hall with minimum space requirements. Thanks to LiDriveIn, the 31 XXT can enter a building in normal operation with the arm package folded in front of the cab. The machine can therefore enter through a 4 m high building opening at walking speed. Once in the hall, the machine can be unfolded without any problems despite the low ceiling height due to the low unfolding height. Truck-mounted concrete pumps for concreting in halls, buildings and tunnels Liebherr-Mischtechnik GmbH, 88427 Bad Schussenried, GermanyThe 31 XXT truck-mounted concrete pump can also work in low halls thanks to LiDriveIn. The hose and piping storage system of the 31 XXT allows the best possible adaptation to customer requirements and ensures convenient and safe storage