Pool Lane Flowing Smoothly Again Thanks to UltraCrete

UltraCrete’s HAPAS approved manhole reinstatement system has been used to repair a troublesome manhole cover on a busy road in Bromborough in the Wirral.

Wirral Metropolitan Borough Council had been experiencing problems with a re-occurring failure from a particular manhole cover along Pool Lane. The road is heavily trafficked and the chamber required the support of a more durable installation system to help it withstand the flow.

UltraCrete’s HAPAS System was recommended as the solution. It consists of a range of high performance bedding mortars, backfill flowable concrete, cold lay asphalt and bitumen seal and tack coat spray that withstand extreme trafficking. These products have been approved for use by the British Board of Agrément and have undergone rigorous assessment to verify their capabilities.

Engineering Contractor Bam Nutall carried out the reinstatement using UltraCrete’s HAPAS approved Envirobed HA104®  bedding mortar to install the frame. It is a cementitious alternative to resin containing recycled glass and is ideal for use in heavily trafficked and wheel track locations. It exceeds HA104 requirements adopted by the Highways Agency, achieving a superior compressive strength of 53N/mm² and a tensile strength of 6.10N/mm² in just 3 hours!

UltraCrete’s QC10 F Rapid Set Flowable Concrete was used to backfill the frame. The product offers a fast strength gain of 20N/mm² after just 90 minutes and virtually eliminates voids. Its pourable consistency facilities a quick and easy application – great for areas with a tight time constraint.

The vertical edges and backfill concrete were then sprayed with UltraCrete’s SCJ seal and tack coat spray before Instant Road Repair cold lay asphalt (10mm grade) was applied as the surface finish. The cold joint sealer helps to promote bond between the asphalt and the surface as well as preventing water ingress which leads to road structural failure. Once compacted, HAPAS approved Instaband ECO thermoplastic overbanding was heat applied to the surface edges to seal them and prevent fretting.

18 months on, the cover has successfully withstood trafficking, with no signs of deterioration. Bam Nuttall commented ‘We’re very pleased with Ultracrete’s system, the cover is holding up well!’ They have consequently recommended UltraCrete products to other suppliers.

For further information on products from the UltraCrete range of mortars, cements, concretes and surface sealants, contact us on 01827 254402, or email ultracrete@instarmac.co.uk