Reactivatable set-inhibited cementitious compositions

Details Reactivatable set-inhibited cementitious compositions Reactivatable set-inhibited cementitious compositions

1982-12-06

1984-06-19

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106315, C04B 732, C04B 735

Patent

active

044551711

ABSTRACT:
Aqueous grouting compositions based on high alumina cement have the onset of setting delayed for upwards of one month by the incorporation therein of a set-inhibiting agent such as boric acid or gluconic acid delta lactone and can then be rapidly reactivated for use by the incorporation therein of a reactivator, for example lithium carbonate, to produce a high strength hardened cementitious composition. The reactivated composition can advantageously be used to anchor a reinforcing element such as a rockbolt or dowel in a borehole and for this purpose the set-inhibited cementitious composition and the reactivator can be packaged in the separate compartments respectively of a dual-compartment frangible cartridge.

REFERENCES:
patent: 3053673 (1962-09-01), Walker
patent: 4131578 (1978-12-01), Crinkelmeyer et al.
patent: 4352693 (1982-10-01), Langdon

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