ULTRACRETE Helps to Preserve Part of London’s Victorian Heritage

ULTRACRETE Helps to Preserve Part of London’s Victorian Heritage from Instarmac Group

By: Instarmac Group  18/07/2011
Keywords: Highway Maintenance, Bedding Mortar, Ironwork Reinstatement

 

Ultracrete’s BBA/HAPAS Approved Manhole Reinstatement System is being used to reinstate 150 manhole covers and gullies in London’s historic Blackwall Tunnel.

Transport for London (TfL) began a multi million pound refurbishment of the northbound carriageway of the Blackwall Tunnel in east London in February 2010.

The tunnel, built in 1897, is part of London’s Victorian Legacy. It serves as one of the key east London river crossings and is used by over 50,000 vehicles a day. As this number continues to rise, so is the need to maintain its safety systems and equipment.

The project involves refurbishing and enhancing the tunnel’s emergency walkways and communication systems.  The safety upgrade is due to complete in time for the London Olympic Games in 2012.

Transport for London awarded civil Engineering Contractor, BAM Nuttall, the contract for the refurbishment of the northbound carriageway. Ultracrete’s BBA/HAPAS Approved Manhole Reinstatement System was specified to reinstate some 150 manhole covers and gullies throughout the tunnel.

The system comprises of bedding mortars that meet HA104 specification and the reknown INSTANT ROAD REPAIR cold lay asphalt concrete that meets HAPAS approval for 1 time permanent repairs to footways, cycle tracks and class 3 & 4 carriageways.

The existing gullies and manhole covers are being broken out, old debris removed and the brickwork cleaned down before ENVIROBED HA104®, Ultracrete’s high performance bedding mortar, is applied. The gullies/manhole covers are then re-positioned onto the mortar. Ultracrete’s QC10 F, rapid set flowable concrete, is applied to the surrounding void and surfaced using Ultracrete’s SCJ, bitumen cold joint sealer and tack coat and Ultracrete’s INSTANT ROAD REPAIR.

The scale of the project is complex involving many different elements and a tight work window, in order to minimise closures to the tunnel and disruption to traffic. Ultracrete’s BBA/HAPAS Approved Ironwork System was chosen because of the rapid setting qualities of its bedding materials and their excellent workability.

Repairs carried out using Ultracrete’s system can be trafficked within an hour. Ultracrete offers a full system that is independently tested and HAPAS approved by the BBA, offering the contractor a minimum service life of 5 years, with no risk of split liability.

For further information on products from the Ultracrete range of mortars, cements, concretes and surface sealants, contact the Instarmac® Group plc, Danny Morson Way, Birch Coppice Business Park, Dordon, Tamworth, B78 1SE.

Tel: 01827 871871. Fax: 01827 874466.

Email:   

Website:

ULTRACRETE is a brand of the Instarmac Group plc

Keywords: Bedding Mortar, Highway Maintenance, Ironwork Reinstatement, Manhole Leveller

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