Pumpable backfill material of high strength

Details Pumpable backfill material of high strength Pumpable backfill material of high strength

E - Fixed Constructions

21

F

31/9

E21F 15/00 (2006.01) C04B 28/22 (2006.01)

Patent

CA 1266170

CBP157 ABSTRACT An aqueous slurry of backfill material e.g. slimes, includes a settable material and an activator therefor, e.g. pulverised fuel ash and lime, and a lubricant e.g. clay and a plasticiser, e.g. a lignosulphonate so that the slurry can be pumped over long distances but will then set to develop high early strength.

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