Pumpable backfill grout

Details Pumpable backfill grout Pumpable backfill grout

1992-09-23

1994-03-15

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106675, 106705, 106706, 106708, 106719, 106DIG2, 252378P, 405266, C04B 1408, C04B 1418

Patent

active

052942554

ABSTRACT:
A pumpable backfill grout which hardens into a controlled low strength material and an additive for making up such a backfill grout. The grout consists essentially of portland cement, a smooth surfaced vesicular expanded perlite, fly ash, fine aggregate, water, an air entraining agent, a quick dispersing thixiotropic suspending agent and a bentonite thickening agent.

REFERENCES:
patent: 4419135 (1983-12-01), Hoge
patent: 5114617 (1992-05-01), Smetana et al.

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