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Resumo While the cement plant is considered one of the most polluting industry, responsible for about 5% of global CO2 emissions, the concrete has the potential to uptake this gas through the carbonation process, offset in part the emissions generated in its production. With the purpose to analyze this process, this study aims to evaluate emissions and CO2 uptake with cement content 300-580 kg produced with different cement types (CP II F, CP II E, CP II Z, CP III, CP IV and CP V). Through mathematical modeling, the emissions balance was made, identifying the mix that shows good resistance to carbonation and greater absorption of CO2 during the concrete life cycle. The results show that concrete with cement consumption between 380 and 420 kg/m3 showed better balance emissions.

Balance emissions and CO2 uptake in concrete structures: simulation based on the cement content and type