Ceramsite concrete and preparation method thereof

The invention discloses ceramsite concrete and a preparation method thereof. The ceramsite concrete comprises raw materials in percentage by weight as follows: 10%-15% of cement, 4%-10% of water, 50%-56% of coarse aggregate, 15%-20% of fine sand, 0.3%-1% of polyurethane modified epoxy resin toughening emulsion containing modified wood fiber, 0.02%-0.10% of sodium dodecyl sulfate, 0.5%-1% of polyacrylate, 0.01%-0.05% of triethanolamine, 5%-10% of calcined gypsum, 0.5%-1% of water glass and 0.1%-0.5% of a water reducer, wherein the weight percentages of the raw materials add up to 100%; the coarse aggregate is a mixture of ceramsite and natural coarse aggregate, and the ceramsite in the mixture accounts for 20%-100% in percentage by weight. The ceramsite concrete has very good anti-impact, anti-seismic and anti-cracking performance, the compressive strength of the ceramsite concrete can reach 30-60 MPa after 28 days, and the ceramsite concente is suitable for bearing structures of buildings.