Multi-component grouting system
AssigneeImperial Chemical Industries PLC
InventorJohn Cooper
Life of this patent
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Abstract
A multi-component grouting system having at least one component wherein the active ingredient is contained in the dispersed phase of a water-in-oil emulsion, the oil providing an effective barrier against mixing of the components thereby enabling the components to be stored indefinitely in direct contact. The components may advantageously be encapsulated in a single compartment frangible casing for insertion into drillholes in rock. The grouting systems may be based on compositions comprising hardenable resins, Portland cement, Plaster of Paris, zinc oxide/zinc chloride, or sodium silicate. By eliminating the usual plastics film barrier between the grouting system components, intimate mixing of the components in a drillhole by rotation of the bolt to be fixed inthe drillhole may be more easily and reliably effected.
Claims25
A storable packaged multi-component grouting system wherein the components are disposed in direct side-by-side contact in a single-compartment frangible casing, said components providing a setting composition when the components are intimately mixed together, said grouting system comprising:
- a first component which is a water-in-oil emulsion, said emulsion comprising a polar liquid as the dispersed phase in a liquid of lower dielectric constant, at least one active ingredient of the grouting system being contained in the dispersed phase of said emulsion;
- and a second component containing at least one other active ingredient reactable with said one active ingredient to produce the setting composition, said components being disposed in direct contact with each other, the oil phase of said emulsion being inert to the second component and forming a frangible barrier between the two active ingredients thus preventing the formation of a setting composition until the two components are intimately mixed with each other and the emulsion broken.
A method of preparing a multi-component grouting composition wherein an aqueous solution of the active ingredient of one component of the composition is emulsified with oil as a water-in-oil emulsion and the emulsion and the other components are placed in direct side-by-side contact in a single-compartment frangible casing.
Dependencies are inferred from the claim text.