High-activity calcium-based carbon absorption concrete and preparation method thereof

The invention discloses high-activity calcium-based carbon absorption concrete and a preparation method thereof. The high-activity calcium-based carbon absorption concrete is prepared from the following raw materials in parts by weight: 55-60 parts of building waste, 12-18 parts of slag, 5-8 parts of coal ash, 18-20 parts of cement, 4-6 parts of a calcium-based material, 3-4 parts of gypsum, 1-2 parts of a water reducing agent, 5-10 parts of a fiber mixture and 8-12 parts of water. According to the concrete, the fiber mixture is added into the concrete, and the fiber mixture has relatively good flexibility, so that the toughness and crack resistance of the concrete can be increased, the contact area between the fiber mixture and other components can be increased, gaps in a mixed system can be reduced, and the possibility that the poured concrete cracks or cracks are formed due to too low temperature can be reduced; the building waste, the slag and the coal ash are used as raw materials, so that the use amount