Modified carbon nanotube concrete and preparation method thereof

Abstract

The invention relates to a modified carbon nanotube concrete and a preparation method thereof. In combination with the international advanced research concept of carbon nanotube concrete materials, the invention proposes that carbon nanotubes are subjected to plasma surface treatment, consequently, the surface hydrophilicity of the carbon nanotubes is improved on the basis of not injuring the surface structure of the carbon nanotubes, and moreover, the dispersivity of the carbon nanotubes in a cement-based material; furthermore, the influence of different amounts of doping plasma-modifed carbon nanotubes (P-CNT) on the mechanical properties of the concrete is studied, and thereby the modified carbon nanotube concrete with excellent properties and the preparation method thereof are achieved.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a modified carbon nanotube concrete and a preparation method thereof. Background technique [0002] Concrete is generally made of cementitious materials, coarse and fine aggregates, water and other materials, prepared in appropriate proportions and hardened to form an artificial stone with the required shape, strength and durability. Concrete is the most widely used man-made material in the world today, but concrete has disadvantages such as heavy weight, low specific strength, low tensile strength, poor deformation ability and easy cracking. Moreover, the uncertainty of choosing concrete materials, the diversity of designed concrete structures, and the complexity of concrete construction and on-site maintenance, etc., are more likely to cause concrete cracks, thereby affecting the strength of the entire building structure. For this reason, since entering the 21st century, the technical ...

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Problems solved by technology

[0004] However, the surface structure of carbon nanotubes is inert, it has high chemical stability, weak interaction with other solvents, few surface defects, and lack of active groups, so it is difficult to dissolve in water and various solvents. There is a strong van der Waals force between them, which makes it easy to form agglomeration or entanglement, and it is easy to generate aggregation

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