Concrete pipeline mud-jacking agent and preparation method

The invention belongs to the field of building materials, and particularly relates to a concrete pipeline mud-jacking agent and a preparation method thereof. The invention adopts the technical scheme that the concrete pipeline mud-jacking agent comprises the following components in percentage by weight: 0.5 to 2 percent of efficient water reducing agent, 0.1 to 0.5 percent of stabilizer, 1 to 5 percent of early expansion agent, 35 to 55 percent of medium and later expansion agent, 0.1 to 1 percent of retarder, 0.2 to 1 percent of rust inhibitor, 0.05 to 0.1 percent of air entraining agent and 50 to 60 percent of mineral admixture. The concrete pipeline mud-jacking agent has the advantages of wide raw material source, good mobility, high strength, no bleeding or layering, good durability, ageing resistance, low chlorine ion content, no corrosion to steel bars, firmness, high filling property, one-time mud-jacking construction, capability of making slurry in a pipeline compact and pore-free, no shrinkage, no rust corrosion of prestressed steel bars, and firm adhesion with concrete.