Tuffdrain®
Tuffdrain® has been designed for excellent drainage and durability. It's an asphalt material developed for use in Sustainable Urban Drainage Systems (SUDS)
The solution works in line with current planning requirements by managing rainfall for a wide range of applications including porous or ground water storage technology.
Tuffdrain® helps to prevent localised flooding following periods of prolonged heavy rainfall and with its unique design, using a premium Polymer Modified Binder (PMB), it provides a durable# free-draining solution that out-performs traditional open textured AC materials. Tuffdrain delivers drainage significantly in excess of that required for SUDS systems. It also has improved durability through the thick PMB binder film.
Installation
When laid in accordance with BS 594987, the aggregate matrix is locked together and further held by the excellent adhesive properties of the PMB. Installers should be experienced in the use of SUDS solutions with attention given to the foundation,
drainage characteristics and traffic loading.
Tuffdrain®+
For increased stiffness where a degree of fuel resistance may be required.
Tuffdrain® HD
For higher stress areas where the drainage is required in line with highest levels of performance.
Benefits
- Excellent drainage
- Enhanced durability
- Quicker installation
- Increased stiffness
Please note: lead in time may be required for specialist bitumen.
Applications
-
SUDS applications
- Sport surfaces
Tuffdrain technical data
| Coarse aggregate | |
|---|---|
| Los Angeles abrasion value | 30 max |
| Aggregate abrasion value | 15 max |
| Flakiness index | 20 max (30 max for 6mm only) |
| Nominal sizes | 6mm; 10mm; 14mm, 20mm |
| Binder | High performance Polymer Modified Binder (PMB) |
Road and laboratory test results
| Material property | Test specification | Typical result |
|---|---|---|
| Design void content | BS EN 12697-6 | ≥ Vmin 14.0% |
| Binder drainage | BS EN 12697-18 Beaker Method | < 0.3% |
| Water sensitivity | BS EN 12697-12 Method A (ITSR) BS EN 12697-23 | ≥ 80% |
| Indirect tensile stiffness modulus | BS EN 12697-26 Annex C | > 3,000 MPa |
| RTPD (wheel tracking) | BS EN 12697-22 Procedure B WTS in Air | ≤ 1.0mm/103 |
| Hydraulic conductivity | BS DD 229 | > 15,000mm/hr (10mm) > 20,000mm/hr (20mm) |
Tuffdrain® offers enhanced durability when compared to traditional open textured asphalts. However, before placing an order please review the site compatibility with your local Sales/Technical team.
For more information on our SUDS range of aggregates (Aggflow) used within the Tuffdrain® mix, please contact the aggregates technical team at aggregates@uk.heidelbergmaterials.com
