Applying asphalt preservation solutions to footways
Applying asphalt preservation solutions such as Rhinophalt to footways could be a credible alternative to current maintenance techniques, according to Stephen Williams, Chairman of specialist surface treatments contractors, Henry Williams.
He said that with small adjustment to Henry Williams’ existing surface dressing micro-plant, Rhinophalt can now be applied at the specified rates of spread with the footpaths open to the public just two hours after work is complete.
“With the recent emergence of asphalt preservation systems into the UK highways market we consider these systems to be an alternative option for the highways engineer when considering their maintenance solutions for footways.
“With some adjustments to our existing surface dressing micro-plant, we are now able to accurately apply the Rhinophalt binder and aggregate at the specified rates of spread. The laying process is applied at an average walking pace and the footway will be open to the public within two hours of laying. Similar to a surface dressing operation, we are able to ‘quarter’ (lay the Rhinophalt system to widths of 250mm increments) and any areas inaccessible to the plant can be easily treated with hand application techniques.”
Rhinophalt could double the asphalt road surface service life of roads if two treatments are made in 10 years, according ASI Solutions.
This is based on treating roads in a green to light amber condition, and in particular Stone Mastic Asphalt (SMA) and Thin Surface Course Systems (TSCS), which ideally should be treated two years before reactive maintenance is need to help prolong the life.
Rhinophalt is a preventative maintenance treatment for all asphalt which preserves, protects and extends the life of the asphalt infrastructure and is proven to withstand all extreme weather conditions. Applied to the asphalt surface and penetrates through micro-cracks and interconnecting voids to form a hard seal, keeping water out and slowing the ageing process. Rhinophalt contains a natural asphalt, Gilsonite, which is a mineral antioxidant and is a key component in preventing asphalt deterioration caused by oxidation of the bitumen. Gilsonite resin is much harder than bitumen – it is an antioxidant that reinforces, seals and strengthens the surface course and slows down asphalt ageing.
Henry Williams’ footway plant has been designed for the application of surface dressings onto footways and canal towpaths. As such the plant is light to minimise weight pressures on ironwork as well as canal embankments.
The narrow width of the footway sprayer (1.00m wide) allows access the smallest of sites and Henry Williams has built in a facility to reduce the spray widths down to a minimum of 200mm wide. “This allows us to spray any width of footway and to adapt the spray patterns to accommodate the most complex of site shapes and widths,” said Mr Williams.