Cement with reduced permeability
AssigneeRestone AS
InventorsJill Angelique Clausen, Astri Kvassnes
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Abstract
A cementitious mixture to make structures with reduction of gas permeability was disclosed. The mixture includes, cementitious materials, and one or more divalent magnesium-iron silicate that in neutral or basic aqueous solutions have the capacity to be a latent hydraulic binder comprising 2% to 99% of divalent magnesium-iron silicate by weight of total hydraulic solid materials. This can be used to produce a cementitious structure for preventing gas transfer between a first region and a second region. A cement slurry was also disclosed.
Claims20
A cementitious mixture for reduced gas permeability that comprises:
- a) an alkaline cement;
- b) one or more divalent magnesium-iron silicate from a natural earth-based system wherein more magnesium ions than iron ions are present that in neutral or basic aqueous solutions is a latent hydraulic binder comprising 2% to 99% of divalent magnesium-iron silicate by weight of total hydraulic solid materials.
A cementitious slurry for reduced gas permeability that comprises:
- a) an alkaline cement;
- b) water;
- and
- c) one or more divalent magnesium-iron silicate from a natural earth-based system wherein more magnesium ions than iron ions are present that in neutral or basic aqueous solutions is a latent hydraulic binder comprising 2% to 99% of divalent magnesium-iron silicate by weight of total hydraulic solid materials.
Dependencies are inferred from the claim text.