Green high-strength and high-toughness concrete and preparation process thereof

The invention relates to the field of concrete, and particularly discloses green high-strength and high-toughness concrete and a preparation process thereof. The green high-strength and high-toughness concrete is prepared from the following raw materials in parts by weight: cement, fly ash, mineral powder, natural aggregate, modified regenerated aggregate, water, an additive and composite fibers, a preparation method of the modified regenerated aggregate comprises the following steps: weighing waste concrete blocks, pretreating to obtain regenerated aggregate, putting the regenerated aggregate into a sodium gluconate solution, stirring and soaking, then taking out the regenerated aggregate, and performing drying post-treatment to obtain the modified regenerated aggregate; the preparation method comprises the following steps: weighing the cement, the fly ash and the mineral powder, mixing and stirring to obtain a premix; weighing the natural aggregate, the modified regenerated aggregate and the composite fiber