Partner: Berger Beton
Date: Spring 2026
Location: Eberswalde, Germany
Concrete Application: Floor slabs (main building) | exterior walls, interior columns, reinforced beams, and basement slabs (extension building)
Amount of eLM Zero used: 11 tonnes (granulate)
Carbon Sink: ~13.5 tonnes ofCO₂e durably stored (project total)
CO₂ Footprint: 180 CO₂e/m³
Additional Info: Combination of 25% recycled aggregates and integration of eLM Zero

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For the renovation and extension of Johanniskirche in Eberswalde, over 11 tonnes of ecoLocked Materials® (eLM Zero) were prepared in granular format for use in concrete supplied by Berger Beton. The project, designed by adb Berlin and led by the Evangelische Kirchenkreis Barnim, includes both the refurbishment of the historic church and the addition of new building areas that will provide administrative space and host events for up to 200 people.

The construction approach places strong emphasis on material selection, circularity, and embodied carbon reduction. eLM Zero is being integrated across a wide range of structural applications, including floor slabs in both existing and new parts of the building, exterior walls, interior columns, reinforced beams, and slabs above the basement.

By combining circular construction principles with carbon-storing concrete technology, the project significantly reduces embodied emissions while enabling the permanent storage of more than 13,500 kg CO₂e within the building structure itself.

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