Network Rail needed to repair an old, failing viaduct outside Warrington that supports a railway line. |There were two key criteria that had to be met and these were to:
The solution chosen was to use Jablite Geofoam under the Four Arches viaduct to support the structure so that it could continue its working life during and after the repair works.
Jablite’s in-house Civil Engineers worked closely with Network Rail and advised on the best design approach.
|Project:||Repair of an old viaduct to extend its life|
|Site:||Four Arches Viaduct carrying railway track near Warrington|
|Block Size:||Bespoke designed blocks of varying sizes to fit the arches under the viaduct|
|Area of Void:||1400m³|
|Jablite Product:||Fillmaster FM 500|
|Characteristics of Fillmaster:||Robust Lightweight Designed-to-Fit Easy-to-Handle|
Jablite supplied Geofoam 500 grade blocks designed and cut to fit exactly into the spaces under the archways. Once the work on site began, the precise design, cutting and shaping of the enormous blocks of Geofoam by Jablite enabled a successful installation.
The design engineer sent the dimensions to Jablite and our in-house Civil Engineer designed the layout to provide the best-fit solution. The huge blocks of Geofoam were cut to size and shape in the Jablite factory.
Each block was individually marked and delivered to the Four Arches site with detailed installation instructions describing how to fit the blocks together and the order they should be installed in.
The installation was smoothly carried out by Network Rail’s Civil Engineering Special Projects team with no need to bring in specialist contractors or equipment for the work and – importantly – with no interruption to the train service using that stretch of track.
Once the Geofoam was installed the blocks were grouted in place using a concrete mix and the whole structure is now covered in earth.
“We are very proud of this project,” says Darren Evans, Jablite Civils & Infrastructure Manager. “Our design service and technical expertise were key to winning the project and our customer support team excelled themselves by delivering truly outstanding customer service.
“We are delighted with the speed and ease of the installation and of the finished look of the job.”
The end result is the old viaduct is given a new lease of life without the need for demolition and the long-term disruption to the train service has been avoided.
No disruption to the train service over the viaduct
Design and technical advice provided by Jablite in-house Civil Engineer
Blocks cut to size and numbered for an easy installation
Easy to handle and fast installation
No requirement for specialist contractors
No specialist PPE needed