Pumpable normal-temperature-curing ultra-high-performance cement-based composite material

The invention relates to the technical field of construction materials, and discloses a pumpable normal-temperature-curing ultra-high-performance cement-based composite material which comprises a component A, a component B and a component C. The component A comprises the following components in parts by weight: 270-480 parts of cement, 8-40 parts of nano titanium dioxide, 330-600 parts of quartz powder, 10-100 parts of gypsum, 50-200 parts of ground fly ash and 100-150 parts of silica fume. The component B comprises 70-230 parts by weight of steel fibers, and the component C comprises the following components in parts by weight: 15-20 parts by weight of a superplasticizer, 10-20 parts by weight of a retarder and 100-125 parts by weight of water. According to the pumpable normal-temperature-curing ultra-high-performance cement-based composite material, the biological erosion resistance of the cement-based composite material is improved through the nano titanium dioxide, the compactness of the cement-based mate