ByggVesta, AF Gruppen Öst, and Strängbetong have entered into a partnership to jointly reduce the climate impact of the residential project Hestur, located in Kista Äng, just outside Stockholm. The shared goal is to explore and implement new, innovative, and cost-efficient methods for sustainable construction. The project also involves researchers from Chalmers University of Technology, who will independently verify the results and benefits of the measures taken. Through close industry collaboration and active knowledge-sharing, the partners hope to inspire others in the construction sector.
The Hestur project, which will comprise 220 rental and student apartments, follows ByggVesta’s incentive program. This framework encourages collaboration between partners to identify actionable measures that can reduce the project’s climate footprint — with concrete accounting for a significant portion. Examples of successful initiatives include a slimmer building structure and the use of climate-improved concrete.
The project’s measures and associated costs are being monitored by Ida Karlsson, a PhD student at Chalmers participating in the Mistra Carbon Exit research program. The mapping will also include alternative technologies and measures that were not implemented in this particular project, giving the study high knowledge value for the broader industry.
For Hestur, Strängbetong is supplying interior walls cast with Agri™Betong, which includes microsilica—an alternative binding agent made from rice husk ash that has half the carbon footprint of traditional industrial concrete. Strängbetong is also delivering Green Spine Line® certified hollow-core slabs and walls, with up to 23% lower CO₂ emissions compared to standard values*.
