Ecological low-shrinkage full-ferrochrome slag aggregate ultra-high performance concrete and preparation method thereof

According to the ecological low-shrinkage full-ferrochrome slag aggregate ultra-high performance concrete and the preparation method thereof, a large amount of solid waste ferrochrome slag discharged during ferrochrome alloy smelting serves as aggregate to completely replace quartz sand or natural river sand, and mining of natural gravel aggregate and damage and pollution caused by the natural gravel aggregate to the ecological environment can be reduced. A fly ash-silica fume-ferrochrome slag micro powder ternary system is used as an auxiliary cementing material to further optimize particle accumulation, and the provided ultra-high performance concrete has ultrahigh mechanical and anti-drying shrinkage performance; the problem that the total ferrochrome slag aggregate ultra-high performance concrete is large in self-constriction can be remarkably improved by regulating the pre-wetting water absorption rate of the aggregate to be 45%-65%. The full-ferrochrome slag aggregate ultra-high performance concrete has