Cement-based composite material based on Ca-MOF in-situ growth and preparation method thereof

Abstract

The invention discloses a cement-based composite material based on Ca-MOF in-situ growth and a preparation method thereof, and belongs to the technical field of preparation of cement-based materials. The preparation method comprises the following steps: mixing a calcium source solution with an organic ligand solution to obtain an MOF pre-assembled solution; and doping the MOF pre-assembled solution into a cement-based material, uniformly stirring, and then curing and forming to obtain the cement-based composite material based on Ca-MOF in-situ growth. According to the method, in-situ generation of the MOF material in the cement environment is combined with cement hydration, and generation of the hydration product not only provides physical support for MOF assembly, but also creates a suitable alkaline environment to promote in-situ growth of MOF. The prepared cement-based composite material is high in mechanical strength. The preparation process is green and low-carbon, cost and energy consumption are remarkably reduced, beneficial combination of metal, inorganic matter and organic matter is achieved, and excellent application potential and development prospects are shown.

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