Lindner Group

Inspired by the Volcanic Landscape: Organic Design with LinCrete at Keflavík Airport, Iceland

As part of the extensive expansion of Keflavík International Airport (KEF) in Iceland, passenger capacity has been increased to an impressive 13.8 million travellers per year. Central to the new terminal design was the vision of integrating the island’s unique, rugged volcanic landscape into the architecture. The connection to nature was to be reflected not only in the building’s facade but also throughout the interior – including the design of the baggage areas and the supporting structural elements.

Technical Sophistication for a Rugged Aesthetic
Lindner IPC was commissioned to clad a total of 42 steel columns – 39 round and three oval – ranging in height from 2.4 to 11 metres. The cladding was designed not only to be visually striking but also to evoke the Icelandic landscape in both form and texture. To achieve this, LinCrete glass fibre reinforced concrete was used – a material renowned for its design flexibility, durability, and delicate precision. A total of 92 bespoke cladding elements were produced, each featuring a rough, stone-like texture that creates a visual connection to Iceland’s natural environment.

LinCrete Glass Fibre Concrete – Robust and Versatile
LinCrete is an innovative glass fibre reinforced concrete, strengthened with alkali-resistant glass fibres. This combination results in greater ductility and stability while allowing for thinner walls. This makes it possible to realise complex, three-dimensional geometries that would be unfeasible with conventional concrete. For the Keflavík project, this meant design freedom without compromising structural integrity or durability.

In addition, the surface of the concrete elements was treated with a photocatalytic coating that autonomously breaks down organic dirt – a solution that is not only long-lasting but also particularly low-maintenance.

Precision Installation: Challenges and Solutions
The column claddings were installed on a specially developed, height-adjustable substructure into which the LinCrete half-shells were precisely suspended. This system had already proven successful in a previous construction project – Garrard House in London – and was adapted for the airport expansion.

The most challenging aspect of the installation was the tallest column, which connects directly to the facade. Due to unforeseen construction tolerances in the steelwork, precise on-site adjustments were necessary. The fragile concrete elements were shipped carefully packed in custom-made wooden frames to ensure smooth transport and secure installation.

The installation was carried out by the Lindner M+S team under the site supervision of Lindner IPC.

The project at Keflavík Airport is a striking example of how innovative materials and regional identity can be harmoniously combined within a modern architectural concept.