“Crack-resisting” asphalt has been successfully used to resurface a concrete car park in Wigan, as the innovative material continues to garner support.
James Callaghan Sons & Co (Calco) took the decision to use the material, known as “SuperFlex”, on the project following advice from Aggregate Industries, as the car park is predominantly used by lorries and HGVs.
In 2017, Aggregate Industries claimed SuperFlex could speed up road surfacing by more than 40%.
The Wigan-based project involved overlaying the concrete car park at home delivery and collection service Arrow XL.
Upon consultation with Aggregate Industries’ specialist asphalt division, Calco decided that SuperFlex would prove to be the best option to reduce the risk of reflective cracking and provide high levels of durability required for a busy car park.
Calco subsequently refined its proposal of works to also include using a spray jet paving machine which would achieve a better bond via a continuous application of a hot, bituminous tack coat as the SuperFlex was laid in a single layer straight onto the concrete.
Despite this approach resulting in additional costs, Calco was awarded the contract.
Work on the project began in February 2018, with Aggregate Industries delivering 770t of SuperFlex AC10 surface course to site.
Calco director Andrew Callaghan said: “From our client’s perspective, we had looked at potential problems and, in collaboration with Aggregate Industries, produced an improved specification which was still within the budgets of the project.
“We are currently discussing undertaking additional works on site and I would have no hesitation in using SuperFlex on future projects of a similar nature.”
Aggregate Industries territory sales manager Charlotte O’Connell added: “SuperFlex is an ideal material when overlaying concrete due to its enhanced elastic properties provided by the poly-modified binder”
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