Double-liquid grouting slurry, its technology and application for super large diameter underwater shield engineering under high water pressure condition

A double-liquid grouting slurry for super large diameter underwater shield engineering under high water pressure condition, comprising slurry I and slurry II,

• wherein slurry I comprises the following raw materials in weight:
• 35-45 parts of silicate cement clinker, 15-25 parts of granulated blast furnace slag, 24-35 parts of fly ash, 15-25 parts of steel slag, 5-15 parts of bentonite, 4-10 parts of limestone tailing powder, 0.3-2.0 parts of water reducing agent, 0.5-2.5 parts of cellulose, and an amount of water meets a water-binder ratio (w/b) of 0.8:1-1.5:1, the binder includes silicate cement clinker, granulated blast furnace slag, fly ash, steel slag, bentonite, and limestone tailing powder,
• wherein the slurry II comprises the following raw materials in weight:
• 0.2-3.8 parts of short-cut fiber, 96-99 parts of sodium silicate solution, 0.8-4.8 parts of viscous polymer,
• wherein the water reducing agent is a mixture of naphthalene water reducing agent and polycarboxylic acid water reducing agent with a mass ratio of 3:1-3:2,
• wherein the short-cut fiber is a mixture of short-cut basalt fiber and short-cut polypropylene fiber with a mass ratio of 2:1-3:1,
• wherein the viscous polymer is a mixture of acrylate polymer, ethylene vinyl acetate copolymer and polyvinyl alcohol with a mass ratio of 1:1:1-1:2:1,
• wherein a volume ratio of slurry I to slurry II is 1:1-10:1.