Duralayer Multi ® / Duralayer Multi ®+
Duralayer Multi® is a close textured, single layer application which is suited to a variety of asphalt surfacing applications where a low textured and deformation resistant one layer treatment is required.
It was designed following a request from a Local Authority for a cost-effective, single layer solution. It utilises locally-sourced aggregates and for a variety of applications including major roads, rural roads, housing estates, car, caravan parks and trench reinstatements. Duralayer Multi® can be used for a variety of applications. The material has a low surface texture and low air voids, which results in material that doesn’t segregate like traditional materials, therefore protecting lower layers from water ingress.
Duralayer Multi® is available in 20mm, 14mm, 10mm and 6mm sizes and is laid using conventional paving equipment in line with BS 594987.
As per Duralayer Multi® but also provides enhanced fuel resistance.
Details of constituent quality and layer thickness shown below:
- 6mm nominal size 30 – 60mm
- 10mm nominal size 40 – 80mm
- 14mm nominal size 50 – 100mm
- 20mm nominal size 60 – 150mm
The main advantages of Duralayer Multi® when used as a maintenance treatment, either as inlay or overlay or as a surface course for new construction, are:
- Dense asphalt concrete grading, low voids
- Prevents water ingress
- Dense grading enhances fatigue resistance
- Resistance to deformation
- Sustainable product
- Our Duralayer Multi®+ mix has fuel resisting properties
- Low design void contents assists compliance with SROH requirements
- All classifications of roads
- Housing estates
- Car and Caravan parks
Duralayer Multi technical data
|Los Angeles abrasion value||30 max|
|Aggregate abrasion value||12 max|
|Flakiness index||20 max (6mm 30max)|
|Nominal sizes||20mm; 14mm; 10mm; 6mm|
|Binder||40/60 pen 70/100 pen 100/150 pen|
|30mm to 150mm|
Typical performance figures
|Material property||Test specification||Typical result|
|Design void content||BS EN 12697-6||≤ Vmax 5.0%|
|Water sensitivity||BS EN 12697-12 Method A (ITSR) BS EN 12697-23||≥ 80%|
|RTPD (wheel tracking)||BS EN 12697-22 Procedure B WTS in Air||≤ 1.0mm/103