The A617 Millennium Way, a road in Nottinghamshire County (England), which was opened in the year 2000, featured cracks and surface damage after 15 years of use and therefore had to be renovated. Asphalt Grid Systems Ltd. proposed TenCate Polyfelt PGM-G100/100 as a cost-efficient and technically excellent solution.
Missing adhesion between layers before treatment
Core samples had shown that the structural integrity of the bituminous layers was good. However, the high modulus base (7.9 inch [200 mm thick]), the binder course (2.4 inches [60 mm]) and the SMA surface course (1.6 inches [40 mm]) were found to have insufficient adhesion. Obviously, the missing layer bonding had caused the damage in the surface layer.
Multi-functional asphalt interlayer for crack retardation
Due to previous experience and success in Nottinghamshire, the contractor proposed TenCate Polyfelt PGM G-100/100. Additionally, the proposed binder course, ultilayer 20, and the surface course layer, ultipave D, would utilize polymer-modified binders to provide a highly flexible road surface.
TenCate’s supply and installation contractor, Asphalt Grid Systems Ltd., deployed their fast fit system to carry out the operation with speed and efficiency. The project was completed three days ahead of schedule.
“We were able to efficiently rehabilitate the roads, improve their technical quality and increase their lifetime with our high-strength, glass fiber reinforced composite,” says Gernot Mannsbart, Product and Application Manager Paving Solutions EMEA.
Most cost-efficient and technically sound solution
TenCate Polyfelt PGM-G 100/100 proved itself to be the most cost-effective and technically sound solution, providing a significant increase in lifetime. The asphalt interlayer unites several benefits within one product, providing crack retardation, sealing function and stress absorption.
The product consists of a continuous filament mechanically bonded nonwoven, which is reinforced by high-strength glass filaments. The installation in the bituminous tack coat prevents the ingress of water and oxygen into the lower layers.
At the same time, it reinforces the new asphalt layers. As a result of these characteristics, this solution is excellent for the economic rehabilitation of cracked roads.
This article originally appeared on the TenCate Geosynthetics Europe blog, https://blog.tencategeo.eu.