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Rock Grouting Techniques

Rock grouting tends to be used to fill fissures in the rock, reducing the amount of water that filters through the rock mass. It is usually carried out with a single packer that is inserted into the previously drilled bore to the pre-established level; grouting is carried out and then the packer is raised by stages, normally every 5m, until grouting of the bore is complete. Grouting has traditionally been carried out with cement-bentonite mixes, and occasionally micro cement is used.