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 ¬į.

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

Sokndal, Norway

The recently opened Motorcenter Norway offers everything from go-carting to drag racing. Nynas was involved in the project by supplying Nypol HF 105, a polymer-modified bitumen ideal for pavements that are subjected to high stresses.

Projects

Gothenburg, Sweden

The Älvsborg Bridge spans the estuary of the Göta Älv river at the entrance to Gothenburg and the biggest port in Scandinavia. The bridge, officially opened in 1966, has a total length of 930 m and a suspended span of 418 m. To guarantee the bridge's functionality and extend its useful life, extensive maintenance work has been under way since 2019, the third and final stage being completed this summer.

Talking point

Road infrastructure in North-Western Europe

Even though many successful road projects have been completed in Western Europe in recent years, the durability and availability of the road infrastructure needs to be improved.

Interview

Paving the way for asphalt 4.0

Digitalisation is making inroads in the asphalt industry. The latest Eurasphalt & Eurobitume (E&E) Congress was held virtually in June. It was a success, but the next E&E event will allow industry stakeholders to meet face-to-face.

Noted

All the key players are working together to achieve the best possible result.

Katri Eskola, Specialist Road Maintenance Finnish Transport Infrastructure Agency

Talking point: The COVID-19 pandemic


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