High-crack-resistance and high-flow-state C100 ultrahigh-strength concrete and preparation method thereof

The invention provides high-crack-resistance and high-flow-state C100 ultrahigh-strength concrete. The ultrahigh-strength concrete is prepared from the following raw materials in parts by mass: 380-480 kg/m < 3 > of cement, 30-80 kg/m < 3 > of silicon powder, 30-80 kg/m < 3 > of fly ash microspheres, 124-160 kg/m < 3 > of mineral powder, 694-845 kg/m < 3 > of sand, 754-902 kg/m < 3 > of gravel, 6-10 kg/m < 3 > of slaked lime, 5.0-8.0 kg/m < 3 > of a modifier, 13-24 kg/m < 3 > of acrylic emulsion, 0-78 kg/m < 3 > of steel fibers, 30-60 kg/m < 3 > of an anti-crack agent, 12-20 kg/m < 3 > The invention also provides a preparation method of the ultrahigh-strength concrete. The invention aims to utilize the specific requirements and functional characteristics of the raw materials for reasonable compatibility, realize the unification of ultrahigh strength, high fluidity and high crack resistance of the concrete, and endow the ultrahigh-strength concrete with excellent working performance, mechanical property, crack