Colas 'Retread'
Binder course material for asphalt paving
‘Carriageway Retread
The existing surface is scarified to a depth of up to 75mm with intermittent rolling to allow the passage of traffic. Where necessary, improvements to the material grading can be improved by the addition of aggregate. The surface is then harrowed and graded to form the new road profile.
Carriageway Retread Emulsion is applied followed by further harrowing to ensure maximum distribution and penetration of the emulsion. After rolling, a second application of binder is followed by 14mm chippings to close surface voids. The last stage in the process is a coat of emulsion and 6mm chippings.
To prolong the life of the reconstruction, a surface treatment or overlay is advisable the following season
Footway Retread
The existing footway is scarified to a depth of between 50 and 75mm with a mini cold planer. Unsuitable material and items in excess of 75mm are removed. If required, isolated soft spots are replaced with graded limestone or similar. Scarified material is shaped and graded by hand and any excess material removed to allow for a 20mm wearing course.
Colas Retread 'C' Bitumen Emulsion is applied by bulk sprayer and the surface consolidated by roller. Limestone aggregate is applied lightly to the surface of the completed footway, which is then rolled again. Tack coat is applied before surfacing with 20mm of specified footpath wearing course to complete the process.’
| Material/s: | Bitumen: aggregates (5%: 95%). |
| Environmental statement: | no |
| BRE Ecopoints: | unrated |
| Green Guide rating: | unrated |
| Environmental certification: | ISO 14001 |
| 3rd party accreditation: | none |
| 3rd party product endorsement: | none |
| Quality certification: | ISO 9001:2000 |
| Reusability / Recyclability: | recyclable |
| Recycled content to ISO 14021: | 90% recycled aggregate |
| Life expectancy | unknown |
| Substitute for or new materials / method: |
conventional bitumen macadam materials |
| Downloads: | |
| Codes of Practice: | |
| Workmanship Work Section: | |
| Country/s of manufacture: | in situ |
| UK distribution location: | in situ |
| Alternative products: | Road surfacing |
| Further information: | |
| Information last updated: | Tuesday 29th, April 2008 |
| Manufacturer's evidence rating:* |  |
| Manufacturer: | Colas |
| Address: | Dysart Road, Grantham, Lincolnshire NG31 7LG |
| Telephone: | 01476 404226 |
| Fax: | 01342 711199 |
| Email: | info@colas.co.uk |
| Website: | www.colas.co.uk |
| Supply chain availability: | Service |
| Supplier: | Contracting service by Colas |
| Telephone: | 0121 561 5561 |
| Email: | info@colas.co.uk |
| Website: | http://www.colas.co.uk |
The product has been selected on the above average performance in the following areas:
| - | Abiotic depletion | - | Acidification |
| - | Global warming | - | Eutrophication |
| - | Ozone layer deplection |  |
Solid Waste |
| - | Human toxicity | - | Radioactivity |
| - | Fresh water aquatic ecotoxicity | - | Minerals extraction |
| - | Terrestial exotoxicity | - | Water extraction |
| - | Photochemical oxidation |
*Note:
Manufacturer's evidence rating
* One star rating: The product has been included based on an assessment of the manufacturer's own product information.
*** Three star rating: The product has been included on the basis of a third party, independent, Life Cycle Analysis (BRE Ecoprofile or similar).
