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<p>In recent years, the urgency of addressing global warming has intensified, driving the development of carbon capture and storage (CCS) technologies as a critical strategy for mitigating greenhouse gas emissions. This study focuses on evaluating the feasibility of implementing CO<InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(_2\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>2</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> storage within a glauconitic sandstone from the Golfo San Jorge Basin (Patagonian Region, Argentina). To achieve this aim, the evolution of the mechanical, microstructural and compositional behavior of the rock when exposed to a CO<InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(_2\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>2</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> rich environment, is examined using samples obtained from outcrop. A series of uniaxial and triaxial compressive tests were performed on pristine and CO<InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(_2\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>2</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation>-aged specimens to evaluate changes in mechanical properties. Complementary analysis including mercury intrusion porosimetry (MIP), X-ray fluorescence (XRF), and X-ray diffraction (XRD) provided insight into the alterations in porosity and mineralogical composition caused by the CO<InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(_2\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>2</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> interaction. The preliminary findings suggest changes in the mechanical properties of sandstone after exposure to CO<InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(_2\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>2</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation>, such as a notable reduction in mechanical strength. Changes in porosity and mineralogical composition have also been observed, primarily within the CO<InlineEquation ID="IEq9"> <EquationSource Format="TEX">\(_2\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>2</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> contact zone.</p>

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Impact of CO2-Exposure on the Mechanical and Microstructural Properties of Glauconitic Sandstones

  • 期刊论文

  • 发表日期：

    2025年11月27日

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  • C. Laskowski,
  • D. Manzanal,
  • M. Muñiz-Menéndez,
  • S. Orlandi,
  • J. Allard

摘要

In recent years, the urgency of addressing global warming has intensified, driving the development of carbon capture and storage (CCS) technologies as a critical strategy for mitigating greenhouse gas emissions. This study focuses on evaluating the feasibility of implementing CO \(_2\) 2 storage within a glauconitic sandstone from the Golfo San Jorge Basin (Patagonian Region, Argentina). To achieve this aim, the evolution of the mechanical, microstructural and compositional behavior of the rock when exposed to a CO \(_2\) 2 rich environment, is examined using samples obtained from outcrop. A series of uniaxial and triaxial compressive tests were performed on pristine and CO \(_2\) 2 -aged specimens to evaluate changes in mechanical properties. Complementary analysis including mercury intrusion porosimetry (MIP), X-ray fluorescence (XRF), and X-ray diffraction (XRD) provided insight into the alterations in porosity and mineralogical composition caused by the CO \(_2\) 2 interaction. The preliminary findings suggest changes in the mechanical properties of sandstone after exposure to CO \(_2\) 2 , such as a notable reduction in mechanical strength. Changes in porosity and mineralogical composition have also been observed, primarily within the CO \(_2\) 2 contact zone.