Paebbl Rebond Carbon-Storing SCM for Concrete

Paebbl is an industrial resilience company founded in 2021 and headquartered in Stockholm, with offices in London, Rotterdam and Helsinki and close to 60 employees; Andreas Saari is co-CEO and co-founder. It converts captured CO2 into carbon-storing building materials to cut cement use and the embodied carbon of concrete.

Its accelerated mineralisation process chemically bonds CO2 from industrial capture sources with minerals such as olivine, turning it into a light grey mineral powder in a controlled plant at rates the company puts at ten million times faster than nature. The Rebond series, including Rebond 200 and Rebond 300, is a supplementary cementitious material added to existing concrete mixes so producers keep control of their formulations. A continuous demo plant in Rotterdam can store up to 500 tonnes of CO2 a year, and customers include concrete producers, precast and infrastructure contractors.

• Accelerated mineralisation: binds captured industrial CO2 with olivine-type minerals into stable carbonates.
• Rebond 300: carbon-negative SCM launched in 2026 with a verified EPD of minus 149 kg CO2e per tonne.
• Rebond 200: earlier grade used to replace part of cement in structural floor slabs.
• Drop-in use: added to existing mix designs without changing producers' formulations.
• Continuous demo plant: Rotterdam unit storing up to 500 tonnes of CO2 a year running since March 2025.
• CO2 calculator: online tool for estimating carbon savings on projects.

Ready-mix and precast producers in Vietnam can trial Rebond as a partial cement replacement to meet embodied carbon targets on expressway and metro projects. Industrial emitters with captured CO2 could partner on a regional mineralisation plant. Developers of logistics warehouses and factories can specify carbon-storing floor slabs.

Rebond 300 has a verified EPD net footprint of minus 149 kg CO2e per tonne including production energy and logistics. Slipform infrastructure concrete with AGILIS cut embodied carbon by 26% on an unchanged mix design, and an industrial floor slab in Germany cut 13% with 15% cement replaced while meeting C30/37. The material is added to existing mixes, so producers avoid reformulating and keep their equipment.

Supplies of traditional SCMs such as fly ash and slag are tightening as coal plants close and steelmaking changes, while infrastructure owners set embodied carbon targets. Carbon-storing SCMs made from captured CO2 and abundant minerals offer a new supply route, and Southeast Asia's olivine-bearing geology and growing carbon capture projects make regional production conceivable.

Founded in 2021, headquartered in Stockholm with offices in London, Rotterdam and Helsinki. Investors include Capnamic, 2050, Amazon's Climate Pledge Fund, Holcim, Aurum Impact, Pale Blue Dot, the Grantham Foundation and the European Innovation Council; received a USD 2.2 million DEI+ grant from the Dutch government. First commercial plant targeted for 2028. Partners include AGILIS (NGE Group), Holcim and GOLDBECK.