Engineers developed a method to store CO2 in concrete using carbonated water, achieving 45% sequestration efficiency and enhancing strength.
The new method stores carbon dioxide by using carbonated water instead of still water in the concrete manufacturing process.An engineering team led by Northwestern University has found a novel method for storing carbon dioxide in concrete, a common building material.
The technique achieved a CO2 sequestration efficiency of up to 45 percent in laboratory studies. It effectively trapped and stored nearly half of the CO2 introduced during the manufacture of concrete. In its most basic form, concrete is made by mixing water, coarse aggregates , fine aggregates , and cement . Researchers have been investigating different approaches to storing CO2 inside concrete since the 1970s.. That’s why concrete structures naturally absorb CO.
However, initially, CO2 gas was injected into water that had been mixed with a tiny bit of cement powder, as opposed to injecting CO2 while mixing all the materials together. This carbonated suspension was combined with the remaining cement and particles to create concrete that, when manufactured, actually absorbed CO2.water
Climate Change CO2 Concrete Global Warming Northwestern
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