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Launched by Paebbl, based in the Netherlands, Rebond 300 is a supplementary cementitious material developed to partially replace Portland cement in traditional concrete recipes, without requiring new equipment. The technology uses accelerated mineralization to transform CO2 into mineral powder and store carbon in structures over geological scales.
The construction material Rebond 300, launched by Paebbl, based in the Netherlands, enters the market with an unusual proposition: to function as an input for concrete and a verified carbon removal instrument.
The innovation is presented as the world’s first carbon-negative construction material. However, its role is not to completely replace cement. Rebond 300 is a supplementary cementitious material, known by the acronym SCM.
It was developed to be included in traditional recipes and replace up to 30% of Portland cement, without requiring new equipment.
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How Rebond 300 transforms CO2 into stone
The technology is based on accelerated mineralization. The process mimics nature, which transforms CO2 into stone over thousands of years through reaction with minerals.
Paebbl claims that its technology accelerates this transformation in a controlled industrial environment. The result is a fine, light gray mineral powder capable of being mixed with conventional concrete.
When incorporated into structures, the material stores carbon over geological scales. The company states that it manufactured Rebond 300 to remove carbon from the atmosphere and trap it in the built environment.
Construction material promises to reduce embedded carbon
Rebond 300 has been verified with an Environmental Product Declaration, called EPD, with a footprint of -149 kg of CO2 per ton. In American ton, the reported index is -328 lb of CO2.
Paebbl claims that the performance represents a tenfold advancement compared to the first generation. At standard rates, the material can reduce embedded carbon in a concrete structure by up to 40%.
The adoption strategy targets the industry’s routine. The product was created to directly enter existing precast and ready-mix concrete flows.
Light finish expands architectural uses
Sustainable alternatives to cement, such as fly ash or slag, often darken the concrete. This limits visible applications.
Rebond 300 has an almost white finish and fine texture. Therefore, it can be used in facades, visible urban infrastructure, and architectural elements.
Entering the market faces a conservative sector. Construction depends on strict standards and established norms because structural safety is central to any project.
To reduce this resistance, Paebbl is conducting real studies. The company has already partnered with Holcim and Heijmans to test the material.
One of the tests took place in Germany, where a 420 square meter industrial slab was poured for a global retail logistics center. The application met strength specifications without delay.
If it manages to scale its production, Rebond 300 could transform buildings, foundations, and structures into permanent carbon reservoirs.
The discussion involves cement, which releases unavoidable emissions in the chemical manufacturing process. In this context, materials that convert CO2 into a physical and structural block gain relevance.
Do you believe that this type of construction material can gain space in common projects or does it still seem distant from the reality of the sector? Leave your opinion in the comments and tell us if the priority should be cost, safety, aesthetics, or environmental impact.
