Geo RT

Geo RT

GeoRT Geobear® (2017) Preventing damage to the existing built environment whilst tunnelling beneath has long been an expensive and time-consuming activity. CECL worked together with Geobear to develop a real-time displacement control system using the incredible power...
SlipStress™ Lining System

SlipStress™ Lining System

SlipStress™ Lining System Lee Tunnel (2010 – 2012) The Lee Tunnel project consists of a 7.2m diameter, 6.9km long tunnel, and five of the largest and deepest hydraulic shaft structures ever built in the UK. By taking a holistic approach to design and...
UltraShell™ Lining System

UltraShell™ Lining System

UltraShell™ Lining System Thames Water Ring Main (TWRM) Extension Brixton to Honor Oak and Coppermills (2008 – 2011) UltraShell™ is a High-Performance Fibre Reinforced Cement Composite (HPFRCC) developed as a permanent lining in the underground environment that can be...
Quadracurve™

Quadracurve™

Quadracurve™ TWRM Extension Brixton to Honor Oak (2008) The patented Quadracurve™ ‘one size fits all’ precast lining system allows construction of non-circular tunnels and shafts to optimise the available space. Manufactured from a single form, Quadracurve™ lining...
Waterproof Sprayable Membrane

Waterproof Sprayable Membrane

First 100 Percent Waterproof Sprayable Membrane Safe for Underground Use TWRM Extension Brixton to Honor Oak (2007 – 2011) The waterproofing of sprayed concrete tunnel linings has traditionally been carried out using sheet membranes encased between the sprayed...