Basalt powder as a supplementary cementitious material in cement paste for CCS wells: chemical and mechanical resistance of cement formulations for CO2 geological storage sites
| Autor: | Renan Bordulis Martel, Victor Hugo Jacks Mendes dos Santos, Sonia Maria Cabral de Menezes, Felipe Dalla Vecchia, Amanda Sofia de Guimarães e Stepanha, Darlan Pontin, Sandra Einloft, Gabriela Gonçalves Dias Ponzi, Marta K. Schütz |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Inert
Cement Chemical resistance Materials science Carbonation 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law engineering.material 01 natural sciences Pollution Industrial and Manufacturing Engineering Portlandite General Energy 020401 chemical engineering engineering Cementitious 0204 chemical engineering Composite material Porosity Pozzolanic activity 0105 earth and related environmental sciences |
| Zdroj: | International Journal of Greenhouse Gas Control. 109:103337 |
| ISSN: | 1750-5836 |
| Popis: | This study proposes the application of basalt powder (BP) as a supplementary cementitious material (SCM) in cement formulations for Carbon Capture and Storage (CCS) wells. From experimental results, we identified that the BP can be characterized as a filled-pozzolanic SCM, presenting low pozzolanic activity, large inert fraction, and particle size significantly smaller than class G cement. Formulations with low basalt powder (≤ 0.5 wt.%) content presented the greatest potential for application in CCS wells since they are more resistant to CO2 degradation, showing low porosity and suitable mechanical properties, as evidenced in carbonation tests. Due to basalt powder characteristics, we conclude that the increase in the chemical resistance of the cement formulation with low BP content is due to the reduction of both the porosity and permeability as a result of filling of empty spaces and the refinement of the porous cement network, allied to the low reduction of the alkaline reserve of portlandite. The combination of these features increases the material's resistance to fluid intrusion, reduces the progress of the CO2 degradation front, and preserves the cement matrix's ability to delay the reaction of acid gases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect