Hello!

I was wondering if anyone has any clue why the amount of calcium carbonate formed (i.e. carbon dioxide sequestered) from the reaction between calcium ions and atmospheric carbon dioxide is slightly less at a liquid-to-solid ratio range of 0.2 - 0.7 compared to it at 0.1 (The liquid is pure water and the solid is hydrated cement paste i.e. portlandite (Ca(OH)2) and C-S-H) As you can see from the image attached, there is a slight dip in the quantity of carbon dioxide sequestered between the liquid-to-solid ratios of 0.2 and 0.7 but then it linearly increases past 0.7 to reach an optimum at 8.

Thanks,

Tim