Channel Lining | Chipping Warden, England

Sustainable Scour Protection for HS2 Banbury Road Realignment

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Project Overview

In February 2024, 4,400m² of Concrete Canvas^® GCCM (CC) was used to line a channel adjacent to a new highway and provide long-term scour protection from water run-off.

The new HS2 rail line runs adjacent to Chipping Warden and created the need for the new Banbury road realignment. Due to the high-water table and rainfall in the area, the new realignment required large channels either side of the road to collect road run-off and water from the surrounding fields during heavy rainfall events.

Channel prior to works commencing, vegetation removed and anchor trenches dug, 3 Wide-Roll CCT2^® deployed with excavator and spreader beam, CCT2^® laid transverse

4400m²

of CCT2^® used to provide erosion protection

12 days

installation by 6 operatives

58%

carbon saving vs poured concrete

Solution

The channel was originally specified to be lined in concrete. However, the clients decided against lining the ditch with poured in-situ concrete as it required the use of both formwork and falsework to install.

CCT2^®was specified as an alternative due to the materials ability to be easily and rapidly deployed without the need for specialist equipment or formworks. The material was also chosen for its long-term protection against erosion and reduced carbon footprint compared to the conventional concrete alternative.

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Overlaps secured using stainless steel screws, anchor trenches backfilled, completed installation downstream view, completed installation upstream view

Design & Installation

3 Wide-Bulk Rolls of CCT2^® specified to reduce number of joints
Channel dammed; water pumped to adjacent channel
Vegetation removed and profile graded with long-reach excavator
Transverse layup
Perimeter edges secured in anchor trenches
Screwed overlap joints
Hydrated using a water bowser and hose

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Completed Installation

Summary

Although ground conditions weren’t favourable during installation, the project was completed on schedule with a team of 6 installers installing 4,400m² of CCT2^® at rates of up to 100 linear metres per day.

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