High-temperature-resistant ceramizable cement-based material and preparation method thereof

Abstract

The invention provides a high-temperature-resistant ceramizable cement-based material and a preparation method thereof. The cement-based material comprises the following components in percentage by weight: 60-75% of a precursor and an excitant, 10-20% of a reinforcing phase and 15-20% of an anti-shrinking agent, wherein the sum of the components is 100%. The high-temperature-resistant ceramizablecement-based material further comprises a water reducing agent accounting for 0.5-2% of the total mass of the precursor, the reinforcing phase, the excitant and the anti-shrinking agent, wherein the precursor is selected from a combination of two or more of metakaolin, slag or fly ash, and the excitant is selected from a combination of two or more of cesium hydroxide, cesium silicate and sodium hydroxide. The high-temperature-resistant ceramizable cement-based material has excellent workability after being mixed with water; the cement concrete has better mechanical properties and durability than common cement concrete after being hardened at normal temperature, can resist the high temperature of 1800 DEG C in case of fire or other high-temperature environments, and has the advantages of improved mechanical properties, hardness and thermal shock resistance, stable volume and no cracks or shrinkage.

Description

technical field [0001] The invention relates to the technical field of engineering fireproof materials, in particular to a high-temperature-resistant ceramizable cement-based material and a preparation method thereof. Background technique [0002] The excellent fire performance of building engineering structures has important practical significance for ensuring the safety of engineering structures, prolonging the service life of engineering structures and improving reliability. Existing building fireproof materials mainly use functional components to make the surface of the material foam and carbonize at high temperature, decompose to release water or non-combustible gas, etc. to achieve fireproof function. Its limitation is that when there is no fire, the mechanical properties, durability, and bonding performance of fireproof materials are usually far lower than those of cement concrete materials, and problems such as shedding and failure often occur. After a fire occurs, ...

AI Technical Summary

Problems solved by technology

After a fire occurs, the effective fireproof functional components of the fireproof material are consumed, and the mechanical properties and durability drop sharply. The structure needs to be repaired or replaced, and the fireproof function cannot be realized for many times. At the same time, the fireproof temperature is low.

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