In Alsace, Shell is experimenting with a carbon sink bitumen

For the car park of its new asphalt plant in Brumath (Bas Rhin), Brumath Enrobés used Shell CarbonSink technology for the first time in France, based on bio-component asphalt that sequesters CO2 inside the bitumen. .

It is difficult for asphalt manufacturers to drastically reduce CO2 emissions from one of the most emitting activities. So, to compensate, manufacturers like Shell and its Shell Construction & Road branch are experimenting with carbon capture and storage solutions.

Shell has thus developed, in its R&D center in Bangalore (India), CarbonSink, a solution based on the principle of the carbon sink – when natural materials absorb a large part of the carbon during their growth or their life cycle – using a new binder with bio-components.

Carbon sink sequesters part of the carbon in the asphalt and the bitumenthus technically transforming the road into a carbon sink.

Additional advantage according to the oil group: since the asphalt pavement is recyclable, most of the “captured” carbon will not be released into the atmosphereeven at the end of its life and will therefore not impact the environment.

According to its simulations, Shell claims that its CarbonSink would reduce the carbon footprint of a ton of bitumen by up to 250 kg of CO2e and the carbon footprint of a ton of asphalt by up to 13 kg of CO2e. “This means that we can sequester in the bitumen up to six tonnes of CO2e per kilometer of road,” says Shell.

It is this technology that has been for the first time applied in France by Karp Kneip, a Luxembourg public works company and Brumath Enrobés, hydrocarbon mix production company. For the development of the parking lot of the new Brumath asphalt plant, 20 tonnes of Shell Carbon Sink bitumen-based mix was used by Trabet.

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