Preparation method of composite lightweight cement reinforced by special-shaped polymer structure

Abstract

The invention relates to a preparation method of special-shaped polymer structure reinforcing composite light-weight cement, relating to a preparation method of composite light-weight cement and aiming at obtaining a light-weight high-strength cement building material. The preparation method comprises the following steps of 1, preparing a special-shaped polymer structure; 2, preparing cement slurry; 3, forming a light-weight cement composite material. The preparation method disclosed by the invention improves the reinforcing mechanism of the cement-based composite material from the independent reinforcement of a discontinuous reinforcement phase into the synergetic enhancement of a continuous reinforcement phase by substituting a continuous polymer special-shaped structure network for a discontinuous polymer fiber, thereby effectively enhancing the usage property of the cement-based composite material. The preparation method disclosed by the invention effectively reduces the weight of the material by 40%-50%, does not change the flowing property of the cement slurry, can be used for freely designing the structure of the reinforcement phases and integrally forming the composite material and a prefabricated structure, has the advantages of simple preparation process, low cost, high designability of a technical process, abundance in used raw material and the like and can effectively reduce the weight of the cement building material.

Description

technical field [0001] The invention relates to a preparation method of composite lightweight cement. Background technique [0002] Cement is one of the three basic materials in the construction industry. It is known as the "grain of the construction industry". Even today, when new building materials are constantly appearing, cement is still the most important building material. Cement is seldom used alone, but more often used as a colloid combined with other materials to form a composite material. The most widely used cement-based composite material is concrete. Due to the lack of fracture toughness, tensile strength, and flexural strength of concrete, fiber-reinforced cement-based composites have emerged, which is a short fiber (steel fiber, carbon fiber, and polymer fiber, etc.) The new composite material formed by concrete mixing can effectively improve the toughness and strength of concrete by means of the combination of short fibers and cement paste to form discontinu...

AI Technical Summary

Problems solved by technology

However, the above-mentioned new cement-based composite materials are still trapped in the research concept of concrete, that is to say, they are still in the category of traditional cement materials.

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