Articles & Case Studies

Ultracrete’s resin alternative on location in North Wales

Posted: Tuesday 1st February 2011

Despite polyester resin materials ruling the roost when it comes to providing a durable, high strength ironwork reinstatement, the North Wales Trunk Road Agency recently trialed Ultracrete’s cement-based resin alternative material – Envirobed HA104Ò.

Resins have traditionally been the number 1 choice for ironwork reinstatement, due to their high performance and rapid set times. Until now it had always been difficult to match the same performance characteristics using an alternative material.

Ultracrete ENVIROBED is a revolutionary, next generation, environmentally friendly bedding mortar alternative to resin-based materials. It is supplied as a two-component system which contains a blend of special cements, polymer graded aggregates and recycled glass.

The combined components provide a high performance mortar, which can accommodate depths of 10-50mm in one pass. If necessary, greater depths can be achieved by using a layer-upon-layer method.

Envirobed can more than meet today’s tough highway demands, providing a simple to use performance specification product, aiding sustainability and environmental targets.

The trial in the Pen y Clip Tunnel on the A55 trunk road was carried out to assess its performance at a location of constant trafficking.

Envirobed holds many advantages over similar resin materials: It is part of the Ultracrete BBA/HAPAS Approved Ironwork Reinstatement System; Can be used in wet weather conditions, unlike resins; Contains recycled glass; Can be used at temperatures as low as 1°C; Is Environmentally friendly – no hazardous waste disposal; Can accommodate depths from 10-50mm in one pass; Provides for early trafficking, and; Has early tensile strengths provide significant resistance to heavy trafficking (5.8N/mm² tensile strength after 3 hours)

NWTRA have commented that the performance of Envirobed HA104Ò is encouraging, with no early sign of failure. The principal contractor (Conwy County Borough Council) has also stated that it was found to be straight-forward for their operatives to use. NWTRA have confirmed that if the trial is successful, Envirobed HA104Ò can be used as an alternative to resin-based bedding material on their network.

Envirobed HA104Ò is part of Ultracrete’s BBA/HAPAS approved Ironwork Reinstatement system, which also includes: M60 (rapid strength bedding mortar, HD276/08 approved), QC10 (rapid strength concrete), SCJ (cold joint bitumen tack and seal spray), and the renowned Instant Road Repair (cold lay asphalt concrete).

ULTRACRETE is a brand of Instarmac Group plc

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