News

21/05/2014 11:24

Leiths chose Nynas Nypol 103

A stretch of the A90 in Scotland now has an innovative thin layer wearing course featuring PMB.

A new Scottish specification for stone mastic asphalt could help with some of the durability issues sometimes experienced in the UK

An alternative specification for stone mastic asphalt has been used on the A90 in Scotland, with tests suggesting that the material will be more durable than thin surfacing produced under the standard UK specification, Clause 942 of the Specification for Highway works.

Leiths offered an alternative, a material that would meet all of the contract requirements Plus also meet TS 2010. “It was decided to proceed with two SMA mixes, a 10mm and a 6mm using local granite aggregates of PSV56, laid to a target thickness of 35mm,” Neil Anderson, technical director of Leiths Group, says. For the polymer modified bitumen Leiths used Nynas Nypol 103, a highly modified elastomeric binder which demonstrates substantial resistance to deformation and cracking.

Read the entire article in World Highways

Further reading

The Bridge Builder

Nynas’ highly modified special bitumen has proven to be ideal for surfaces on some of the biggest bridges in Northern Europe.

Read more about The Bridge Builder

Safety always the top priority

Long-term work continues to create an effective safety culture in connection with the handling of bitumen at depots and asphalt plants. Both investment and training are required in order to achieve success.

Read more about Safety always the top priority

Pole position in Austria

To keep up with the demands of Formula 1, the Red Bull Ring in Spielberg, Austria was resurfaced with Nypol 65.

Read more about Pole position in Austria