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- W4225367240 abstract "The process of extracting and manufacturing the raw materials needed to obtain concrete emits large amounts of CO2 to the environment. However, recent research has shown that Portland cement-based materials have the ability to store CO2 in the form of CaCO3 through the accelerated carbonation process during the early ages. This technology can be applied to structural elements without reinforcing steel, as concrete used in pavers. Therefore, the present work performed the CO2 curing in concrete pavers produced on an industrial scale. The samples were placed in a carbonation chamber with 20% of CO2 concentration, the temperature and relative humidity were set in 23°C and 65% respectively and the curing process occurred in 4 and 16 hours. The amount of CO2 absorbed by the samples was determined by the method of mass gain. After the curing process, the mechanical properties were measured. The concrete pavers cured with CO2 reached the highest compressive strength, especially in the first ages (two days), and the resistance to abrasion and water absorption presented satisfactory values, but there were no variations at 2 and 28 days." @default.
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- W4225367240 date "2022-01-01" @default.
- W4225367240 modified "2023-10-18" @default.
- W4225367240 title "CO<SUB align=right>2 capture of concrete units for pavement through accelerated carbonation cure" @default.
- W4225367240 doi "https://doi.org/10.1504/ijmri.2022.122517" @default.
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