Low Carbon Concrete for Arctic Climate with Excellent Sustainability and Durability

Cement and concrete have a significant share in the building industry and so in the generation of CO2 connected to obtaining input materials, production and transportation. Therefore, the cement and concrete industry's common aim is to implement solutions that will lead to a lower carbon footprint, uptake of a circular economy and ensure that their products have sufficient durability. Project Ar2CorD will focus on the optimisation of low carbon concrete (LCC) with the use of established and non-established (future) locally available supplementary cementitious materials (SCM), with the substitution of minimally 30% of portland cement.

There will be two main aims; the first will be an assessment of the durability of LLC (mainly freeze-thaw durability) by accelerated tests (established, modified or newly designed). The development and documentation of the freeze-thaw method can serve as a foundation for the national annexe to NS-EN 206. The second aim is to establish a long-term durability test site in Narvik harbour to enforce data gained from accelerated testing. The solutions to the issues created by the freeze-thaw cycle encountered in Arctic conditions will be addressed to achieve a suitable evaluation system for LCC. The frost resistance issue is likely the biggest challenge/obstacle in reducing the carbon footprint of concrete. Collaboration between experts from Norway, Sweden, Iceland, Finland and Greenland is beneficial because of their combined expertise and dedication to sustainable concrete technology in Arctic conditions. The Ar2CorD project was submitted for the topic “2.3 Promoting the transition to a circular and resource efficient economy”.