We Knew Concrete Could Absorb Carbon-New Study Tells How Much

摘要

Concrete's large carbon footprint-that is, the amount of carbon dioxide emitted during the cement manufacturing process-is estimated to be 5% of industrial CO_2 emissions, a source of concern in the battle against human-caused climate change. But last month, an international research team reported that substantial quantities of CO_2 are reabsorbed, or sequestered, by cement-based products over their life cycle. Concrete, in fact, acts as a carbon sink.