Smart Nanoconcretes and Cement-Based Materials | VOL. None
Cement integrity in CO2 sequestrations sites
Publication Date Jan 1, 2020
Abstract Carbon Capture and Sequestration (CCS) has been recognized as one of the most promising methods to reduce the amount of greenhouse gases released into the atmosphere. However, storage of CO2 in subsurface geological formations is not an easy task considering the geochemical interactions posed by wet/dry CO2 in the storage sites. In fact, in the presence of CO2, the class G cement, which is commonly used to seal-off the injecting intervals of the storage sites, is degraded and leakage paths are created for CO2 to contaminate surface/subsurface resources. In this chapter, attempts are made to show the application of nanomaterials as potential pozzolanic materials which can enhance the cement resistance against the attack of CO2. The mixing method, the dispersion technique, the measurements needed and the precaution demanded were presented to ensure that the cement formulated by the nanomaterials is properly reinforced to survive the acidic environment of a storage site.
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