New Products

Polymer-modified sprayed concrete from Wacker Chemie AG

Whether in tunneling, mining, hydraulic engineering or road construction, the application of sprayed concrete entails rebound – a significant time and cost factor. For this reason, Wacker Chemie AG developed a new line of polymeric binders for concrete applications that considerably reduce spray rebound – and at the same time optimize the concrete’s properties.
An important quality factor in the performance of sprayed concrete is rebound. Rebound alters its properties, and the excess material cannot be reused but must be disposed of as waste. Reducing rebound is therefore important for both...

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Issue 2012-03

Lungern Bypass: Sprayed Concrete Application directly onto Polymer Waterproofing Membranes

1 Overview In the tunnel widenings for the Lungern bypass/CH, sprayed concrete was applied directly onto the flexible polymer waterproofing-membrane (PWM) in the arch area instead of inner lining...

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Issue 2022-06

45% CO2 Reduction Achieved in Cement Production for Stuttgart 21 Tunnel Project

Tunnel construction continues to play an important role in the implementation of infrastructure projects. Against the background of the current climate debate, however, tunnel projects are also...

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Wet Shotcrete Performance – Laboratory Test Methods and influencing Factors in Practice

Shotcrete is a high-performance product, which is placed through spraying at high speed and compacted by the impact: By adding shotcrete accelerator (accelerator) at the nozzle the shotcrete sets...

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Issue 2010-06

Wet Shotcrete Performance – Laboratory Test Methods and influencing Factors in Practice

Shotcrete is a high-performance product, which is placed through spraying at high speed and compacted by the impact: By adding shotcrete accelerator (accelerator) at the nozzle the shotcrete sets...

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Issue 2010-07 Construction Equipment

Sprayed Concrete for Tunnelling

For underground construction in tunnelling and mining, Putzmeister develops equipment particularly for shotcreting, but as well for material transport and other applications. The shotcreting product...

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