Asphalt in High Cross Slope, Germany

In summer 2017, Nynas delivered a carefully chosen PMB grade, Nypol 25, for asphalt layers of a test track.

A bridge paver from SMB Construction International GmbH constructed the steep curves of the oval track. The curves have a cross slope of more than 100 %, the max gradient is/has 49 °.

The asphalt plant Villingen of Deutsche Asphalt GmbH produced the mixes for base courses, binder and wearing course using Nypol 25. This binder was selected in the mix design as the viscosity of the bitumen and the consistency of the asphalt mixes were extremely important, namely the compromise between stiffness and workability that could be achieved in the asphalt for this special geometry.

All of the companies involved confirmed the results obtained with regard to evenness over the curve area.

Projects

Sätaröd-Vä, Sweden

European route 22 (E22) is no less than 5,320 km long, from Holyhead in the UK via the Netherlands, Germany, Sweden and Latvia to Ishim in Russia. The part of the E22 that runs through Sweden plays a major role for the country’s southern region, not least because of the link to the Copenhagen area. The problem is that the road is very busy and accident-prone, and is also close to residential areas that are affected by noise.

Projects

The Rotebro Link, Sweden

County road 267 in northern Stockholm is an important, busy link between the E4 and the E18. To improve the traffic flow on this section, the contractor Svevia has been hired by the Swedish Transport Administration to widen a 6 km section from one to two lanes in each direction.

Projects

Punt Val Mulinaun, Switzerland

High-quality waterproofing of a bridge is generally carried out using mastic asphalt. This is all the more true if there are increased stresses due to climatic conditions or traffic loads. One example is the Punt-Val-Mulinaun arch bridge on the Oberalpstrasse H19 in Graubünden, Switzerland.

Interview

Focus on the future in Athens

Carl Robertus, Technical & Research Director Nynas Bitumen, talks about his expectations ahead of the Argus bitumen and asphalt conference in Athens.

Noted

The score for quality is lower

Roberto Crotti, World Economic Forum (WEF), on the state of the European road network.

Interview on the link between roads and competitiveness


Subscribe!

Get your Bitumen Matters.

Click here to get the magazine in English, Swedish or German.