A review on cement degradation under CO2-rich environment of sequestration projects

• Global warming arising from the release of greenhouse gasses into the atmosphere.
• Cement degradation due to exposure to supercritical CO2 is a complicated issue.
• A review on changes in physical properties of cement was provided.
• It was indicated that static tests condition is closer to reservoir condition.
• Adding pozzolanic material can enhance the cement resistance against CO2.

Global warming arising from the release of greenhouse gasses into the atmosphere is one of the biggest issues attracting a lot of attention. One of the conventional problems in sequestration projects is the degradation of Portland cement due to its exposure to supercritical CO2. This paper gives a review on the laboratory work performed to understand changes in the mechanical and transport properties of cement when it is in a CO2 rich environment. The results obtained indicated that pozzolanic material could be useful in enhancing the cement resistance against CO2, although more studies are still required to confirm this conclusion.

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