High-mechanical-property geopolymer recycled concrete and preparation method thereof

The invention discloses geopolymer recycled concrete with high mechanical property and a preparation method thereof, and belongs to the technical field of concrete production.The preparation method comprises the steps that the surfaces of natural coarse aggregate and recycled coarse aggregate are coated with an interface agent with the thickness of 3 nm, and composite natural coarse aggregate and composite recycled coarse aggregate are formed respectively; the interface agent forms a layer of compact film on the surface of the composite aggregate to effectively fill micropores on the surface of the aggregate, so that the surface of the aggregate is flatter and smoother, and the microstructure of the aggregate is improved. Due to the improvement, micropores and defects in the concrete are remarkably reduced, so that the overall mechanical property of the concrete is greatly enhanced, and the concrete has higher compressive strength and tensile strength and can better meet the requirements of various engineerin