Wirtgen to display concrete paving portfolio at bauma 2022

w photo sp20i 00024 992x558At bauma 2022, arriving in Munich from 24-30 October, Wirtgen will be presenting a range of innovations and a world premier

The SP 20 (i) offset paver will be making its international debut at the Munich conference. The production of concrete safety barriers with a height of up to 2 metres and the paving of flat surfaces with widths of up to 2.5 metres are typical applications for the SP 20(i) offset paver. The new machine offers Wirtgen customers the ideal combination of productivity and mobility as, despite the large paving widths and heights it offers, the machine has a low transport weight and compact dimensions. 

The compact SP 15(i) has been performing in a wide range of application scenarios around the world for many years. In Munich, it can now be seen in a version fitted with a ‘Curb Depressor Mould’. This enables the automatic paving of lowered curb profiles, e.g. for access to driveways. The paving process can proceed without interruption and the need for manual reworking is significantly reduced. 

In the case of the inset pavers, Wirtgen is showing a train of three machines for the paving of high quality concrete traffic infrastructure. The paving train is set up for a working width of 7.3 metres. A placer/spreader such as the WPS 102(i) generally comes into play when paving over pre-placed steel rebar. It travels in front of the slipform paver over the pre-placed steel rebar, while concrete is fed to the belt conveyor swung out from the side from a concrete mixer or a tipper truck. The concrete is poured evenly over the pre-placed reinforcement in front of the slipform paver and distributed across the entire working width. 

The SP 94(i) slipform paver then compacts and paves the concrete mix. The paver at the show, which has a maximum working width of 9.5 metres, is fitted with a TeleMold system. It enables fast and convenient alteration of the working width by up to 0.9 metres on each side, resulting in an overall increase of 1.8 metres. 

The final link in the process chain is the TCM 180(i). This field-proven texture curing machine applies the desired finish to the surface of the freshly paved concrete. It enables the realisation of lengthwise and crosswise textures and pre-defined surface roughness in accordance with project specifications. It also allows the application of a range of different curing agents to the concrete surface, for example a concrete surface retarder.

The largest slipform paver on show at this year’s bauma is the SP 124(i). The 4-track paver can be configured for paving at a working width of 12 metres and fits seamlessly into the fleet-wide operating concept of slipform pavers from Wirtgen. The machine is fitted with the latest generation of the integrated dowel bar inserter. The dowel bars are extracted from the magazine by a chain feed system with an endless chain and automatically transported to the insertion location. ‘Smart’ cylinders with displacement sensors precisely position the dowel bar inserter at the desired locations. 

Developed in-house by Wirtgen, AutoPilot 2.0 is a control system for stringless paving that serves as an alternative to the conventional method of mechanically scanning a stringline. The system, which precisely controls both the height adjustment and steering of the machine, is available for all offset pavers and placer/spreaders. A GNSS signal and, depending on the configuration, various local sensors (e.g. an ultrasonic sensor on the machine), serve as a reference. The time and effort otherwise required for setting up and removing the stringline is eliminated. It also enables fast and precise paving of tight radii and complex geometries. Wirtgen AutoPilot 2.0 is the only system that offers machine control and stringless control for concrete paving in one.

Alain Charles Publishing, University House, 11-13 Lower Grosvenor Place, London, SW1W 0EX, UK
T: +44 20 7834 7676, F: +44 20 7973 0076, W: www.alaincharles.com

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