Ultrafine cementitious grout

Details Ultrafine cementitious grout Ultrafine cementitious grout

1998-01-15

1999-10-19

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106672, 106678, 106724, 106725, 106726, 106809, 106816, 106819, 106823, C04B 1416, C04B 2416

Patent

active

059682574

ABSTRACT:
An ultrafine cementitious grout in three particle grades containing Portland cement, pumice as a pozzolanic material and superplasticizer in the amounts of about 30 wt. % to about 70 wt. % Portland cement; from about 30 wt. % to about 70 wt. % pumice containing at least 70% amorphous silicon dioxide; and from 1.2 wt. % to about 5.0 wt. % superplasticizer. The superplasticizer is dispersed in the mixing water prior to the addition of dry grout and the W/CM ratio is about 0.4 to 1/1. The grout has very high strength and very low permeability with good workability. The ultrafine particle sizes allow for sealing of microfractures below 10 .mu.m in width.

REFERENCES:
patent: 4131480 (1978-12-01), McCurrich et al.
patent: 5626954 (1997-05-01), Anderson et al.
patent: 5641584 (1997-06-01), Anderson et al.
patent: 5776244 (1998-07-01), Ahrens

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