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Concrete absorbs CO2 throughout its life cycle

This reasoning chain explains how Portland cement concrete acts as a CO2 sink through various stages, including in-service structures, demolished material, and end-of-life management, referencing multiple studies documenting absorption and mediating factors.

Confidence
80%
◑partialactivecomplexity: mid

Reasoning Steps (3)

Concrete structures uptake CO2 during serviceStep 1
Demolished and end-of-life concrete increases CO2 uptakeStep 2
Carbonation depends on climate and structure exposureStep 3

Source

Synthesis for current paper

Connections (6)

Portland cement concrete absorbs atmospheric CO2Association
Existing concrete structures uptake CO2 during and after serviceAssociation
Demolished and crushed concrete uptakes CO2Association
End-of-life management of building materials has carbon implicationsAssociation
Global climate change affects carbonation progress in concreteAssociation
Statistical analysis relates carbonation coefficient to open air concreteAssociation