Grouting materials and their use

A grouting material which is self-dispersing when brought into contact with a volume of water-containing liquor or slurry and is settable to a solid mass after such dispersion, the material being in the form of self-dispersing granules or pellets comprising a Composition X, which comprises a blend of:

• Component A:
• Portland cement forming 20 percent by weight of the composition;
• Component B:
• sodium carbonate as a dispersing constituent forming 70 percent by weight of the composition;
• and
• Component C:
• a binder constituent comprising water and forming 10% by weight of the composition.

A grouting material which is self-dispersing when brought into contact with a volume of water-containing liquor or slurry and is settable to a solid mass after such dispersion, the material being in the form of self-dispersing granules or pellets comprising a Composition X, which comprises a blend of:

• Component A:
• Portland cement forming 90 percent by weight of the composition;
• Component B:
• a mixture of citric acid and sodium carbonate as a dispersing constituent each forming 2.5 percent by weight of the composition;
• Component C:
• a swelling constituent forming 4.5 percent by weight of the composition;
• and
• Component D:
• a binder constituent forming 0.5 percent by weight of the composition.

A method of forming a solid mass in a volume of water-containing liquor or slurry which comprises the steps of:

• (1) adding grouting material in the form of self-dispersing granules or pellets to the liquor or slurry in a quantity sufficient to disperse the material throughout the volume or a layer thereof,
• (2) allowing the material to become dispersed in the said volume, and
• (3) allowing the material to set to form a mass of solid,
• wherein the grouting material comprises a Composition X, which comprises a blend of:
• Component A:
• a cementitious constituent forming from 10 percent to 95 percent by weight of the composition;
• Component B:
• a dispersing constituent forming from 2 percent to 75 percent by weight of the composition;
• Component C:
• A binder constituent comprising water, a water soluble organic liquid or mixtures thereof which forms from 0.1 percent to 10 percent by weight of the composition;
• the percentages of the constituents adding to 100 percent.