Five Mile Lane Improvements Project
A project worth noting which specified the material class is the Five Mile Lane Improvements Project, which was included under the £30m Welsh Government budget and completed in September 2019.
The A4226, known locally as Five Mile Lane, is situated near Barry, South Wales and is one of the major routes to Cardiff Airport from the north.
The original road was essentially a narrow and winding country road which was largely unmaintained.
Plans for the Five Mile Lane project were submitted in March 2016, with works commencing in early 2018, and outlined a new two-lane 4km stretch of road situated east of the existing A4226 between Barry and Blackland Farm.
The planned route would allow for a smoother flow of traffic, improved safety and improved journey times. The improvements would also provide a more accessible route for those travelling to Cardiff Airport.
Concrete Canvas® (CC) was specified as an alternative to traditional concreting methods to line a newly constructed crest drainage channel on the eastern side of the new road. A protective lining solution was required to accommodate the anticipated volumes and flow rates while preventing scour of the invert.8
The 8mm thick product variant (CC8™) arrived in ‘bulk roll’ format, allowing it to be cut to required lengths on-site to reduce wastage and laid across the width of the drainage channel. Material edges were captured within anchor trenches using ground pegs, and overlapping layers were jointed using stainless steel screws.
Once the installation was completed, the material’s unique cement mix was activated by spraying the fabric surface with water.
Within 24 hours, the flexible material had hardened to form a solid concrete layer and had reached 80% of its final strength, making it ready to use. After just 48 hours, the material was at full strength, providing a 120-year durability as certified by the British Board of Agrément.