Hybrid fabric grid made from carbon fiber and basalt fiber

Abstract

The invention relates to a hybrid fabric grid made from carbon fiber and basalt fiber, belonging to the field of the building material. The hybrid fabric grid is characterized by being made through weaving the carbon fiber and the basalt fiber in a staggered arrangement way, wherein each stand of carbon fiberfiber is divided into two bunches and each stand of basalt fiber is divided into two bunches, and the two bunches of carbon fiberfiber and the two bunches of basalt fiber are intersected and superposed alternatively to form grid nodes. The high-modulus fiber and the low-modulus fiber are woven into the grid according to different characteristics, and then the grid is laid in concrete to form the hybrid fabric grid reinforced concrete material. The hybrid fabric grid is much cheaper thecarbon fiber grid, and the hybrid fabric has definite bearing direction and can obviously improve the tensile strength, the impact resistance and the ductility of the concrete. The hybrid fabric gridhas better crack resistance, bendability, shock resistance, fatigue durability, waterproofness, high temperature resistance, leakage resistance and low cost, is electrically isolating and can be cutrandomly.

Description

Technical field: [0001] The invention belongs to the field of building materials, in particular to a carbon fiber / basalt fiber hybrid fabric grid. Background technique [0002] Concrete is widely used in the field of civil engineering because of its low price, good fire resistance, heat resistance, corrosion resistance, and high compressive strength. But the disadvantage is that it is a brittle material with poor tensile properties and bending resistance, so people usually use some reinforced materials to overcome their defects. [0003] At present, various random short fiber reinforced concrete composite materials are most used in civil engineering, such as steel fiber, glass fiber, carbon fiber, basalt fiber, etc. However, the disadvantage is that the bearing direction is not clear, especially in concrete structures, it is difficult to replace steel bars to bear a clear load in a certain direction, so many researchers have proposed the use of fiber fabrics, and it has bee...

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Problems solved by technology

But the disadvantage is that it is a brittle material with poor tensile and bending properties, so people usually use some reinforced materials to overcome their defects

[0003] At present, various random short fiber reinforced concrete composite materials are most used in civil engineering, such as steel fiber, glass fiber, carbon fiber, basalt fiber, etc. However, the disadvantage is that the bearing direction is not clear, especially in the concrete structure, it is difficult to replace the steel bar to bear the clear load in a certain direction, so many researchers have proposed the use of fiber fabrics, and it has been widely used.

[0004] However, due to various factors, the stress distribution in the component is uneven. Carbon fiber is a brittle material with high strength and high elastic modulus, but its deformation ability is poor, and it will not produce plastic internal force redistribution at the uneven stress position. It is "broken by each", resulting in poor ductility of the structure; the strength and elastic modulus of glass fiber are low, although the price is low, but the alkali resistance is poor, and its corrosion resistance is poor

Moreover, the fiber fabrics that appear at present are basically woven from one kind of fiber, which can only play a certain specific material performance.

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