Product category:
Materials
News Release from: Instarmac Group | Subject: Ultracrete Envirobed HA104
Edited by the Buildingtalk Editorial
Team on 26 July 2006
Council trials new cement based
technology
Health and safety and environmental considerations were driving forces behind Lancashire County Council carrying out extended trials with Instarmac's new Ultracrete Envirobed HA104.
Health and safety during installation and environmental considerations, such as the need for specialist disposal and its cost implications, were two of the driving forces behind Lancashire County Council carrying out extended trials with Instarmac's new Ultracrete Envirobed HA104 The decision to trial Envirobed HA104 was taken by the 'Materials Innovation Group', which was specifically set up by the Council to evaluate new materials, systems and concepts
This article was originally published on Buildingtalk on 28 Apr 2008 at 8.00am (UK)
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The Group encompasses all the stakeholders including the Client, the Council's Operations, Design and Procurement operations and its materials laboratory.
The council has used the material since December 2005 to reinstate cast iron work, such as manhole covers and gully gratings, at five different locations.
It was decided to test the system on highways and not footways, to ensure it received the maximum drubbing.
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Some of the most critical, vulnerable and heavily trafficked spots were chosen and to date the Authority is very pleased with the system's performance at each of the various locations.
'Envirobed HA104' is based upon the very latest chemical developments in cement technology.
The revolutionary, cutting edge material is the forerunner of the next generation of environmentally friendly alternatives to resinous-based materials for the bedding of ductile ironwork conforming to the DTI Design Manual for Roads and Bridges 'Mortars for bedding ironwork to BS EN 124' .
The new material is wholly environmentally safe, as well as being able to meet the very tough highway specifications.
It is set to completely change the means by which, and the materials with which, future ironwork covers and frames will be installed.
The advantages provided by the new high strength, rapid setting cementitious mortar are numerous.
It conforms to the most recent Highways Agency Specification for Roads and Bridges: HA104/02, which up until now has eluded cementitious mortars and does not have any of the inherent environmental disadvantages of polyester resin based materials; the only products previously able to conform to the specification.
In order to satisfy the guaranteed performance demanded by the specification, mortars must be non-shrink, able to achieve a compressive strength of 30N/mm2 and a tensile strength of 5N/2 after three hours, as well as a minimum workable life of fifteen minutes.
Uniquely, Envirobed HA104's tensile strength is about twice as high as that of other fast setting cementitious mortars, thereby ensuring roads are not closed for lengthy periods and labour costs are kept to a minimum.
The material can be used in wet weather, thus reducing the likelihood of cost increases and traffic disruption caused by inclement conditions.
It is much less hazardous than the traditional polyester resin based materials and there are no problems with regard to the disposal of the used packaging.
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