Salt-concrete
Building material used in salt mines
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History
Salt-concrete was used for the first time in 1984 in the potash mine in Rocanville in Canada.[2] A salt-concrete seal was also installed in the Asse II mine in Lower Saxony in 1995.[3]
Filling tunnels
Since the end of the repository for radioactive waste Morsleben in 1998, the salt dome stability deteriorated to a state where it could collapse. Since 2003, a volume of 480,000 m3 of salt-concrete has been pumped into the pit to temporarily stabilize the upper levels. In addition another 4,000,000 m3 of salt-concrete will be used to temporarily stabilize the lower levels.[4]
See also
- Friedel's salt – Calcium chloroaluminate formed by reaction of AFm hydrates with chloride ions
- synthesized first by Georges Friedel
- Sorel cement – Magnesium-based cement: 1 part MgCl2 for 3 or 5 parts of Mg(OH)2
- produced first by Stanislas Sorel
- Saltcrete – Mixture of cement with salts and brine