The invention provides a self-
corrosion permeable
pollutant blocking material for underground
water treatment and a preparation method of the self-
corrosion permeable
pollutant blocking material, and belongs to the technical field of underground water remediation. The self-
corrosion permeable
pollutant blocking material for underground
water treatment is prepared from the following components in percentage by
mass: 25 to 35 percent of
cement, 12 to 18 percent of 2CaSO4. H2O, 8 to 15 percent of
fly ash, 25 to 30 percent of grading pore-forming aggregate, 14 to 18 percent of nano pore-forming aggregate, 1 to 1.5 percent of
viscosity modifier, 0.5 to 1 percent of early strength agent and 3 to 4.5 percent of modified
biomass fiber, a pore matrix is jointly built through grading pore-forming aggregate, nano pore-forming aggregate and modified
biomass fibers, the grading pore-forming aggregate and the nano pore-forming aggregate have self-corrosion shells, the pore-forming aggregate is an inactive substance and does not participate in the reaction of
silicate cement from the stage before grouting to the hardening stage, and after the material is completely hardened, the pore-forming aggregate is a self-corrosion shell. And the graded aggregate and the nano pore-forming aggregate are converted into permeable pores containing active substances. The material has the advantages of being good in
connectivity, high in supporting performance, wide in pollutant treatment capacity, high in pollutant treatment efficiency, long in
continuous treatment time and the like, has anti-blocking capacity and can be pumped.