Tuffdrain is an asphalt material developed for use in Sustainable Urban Drainage Systems (SUDS) and filter drains at the edges of motorways and other major roads.
The solution works within SUDS by managing rainfall on a property, either distributing it into the ground or storing it for use in grey-water applications.
Traditionally, single-sized, large aggregates have been used in roadside drains, but these stones can be dislodged by traffic running off the carriageway, with the consequent danger of accidents or injury. Based on an open textured asphalt, Tuffdrain uses a polymer modified binder to provide a durable free draining solution that will not be displaced by errant traffic.
Laid using a “sidewinder” on a conventional paver, it replaces removed drainage stones to a depth of 150mm. Compacted by a pavement roller; the aggregate is locked together and further held by the excellent adhesive properties of the modified binder. The material delivers up to 15 times better drainage than that specified for porous asphalt when measured by the hydraulic conductivity test. It also has inherent durability through the thick binder film.
- Designed for excellent drainage/hydraulic conductivity
- The polymer modified binder offers durability
Ideal for SUDS applications
- Filter drains on motorways and major roads
Tuffdrain technical data
|Los Angeles abrasion value||30 max|
|Aggregate abrasion value||15 max|
|Flakiness index||20 max|
|Nominal sizes||10mm; 20mm; 32MM|
|Binder||High performance Polymer Modified Binder (PMB)|
|Road and laboratory test results|
|Voids||10mm Vmin 14|
20mm Vmin 14
|Stiffness||10mm 900 Mpa (typical)|
20mm 2000 MPa
|Hydraulic conductivity||10mm 15,000 mm/hr (typical)|
20mm 20,000 mm/hr
Hanson Asphalt - a national business with a local focus
From sites across the country, Hanson Asphalt produces quality-assured asphalt designed to suit any application.
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