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A kind of high-strength fiber concrete and its preparation method

A high-strength fiber and concrete technology, applied in the field of building materials, can solve the problems of insufficient overall strength and toughness of fiber concrete, achieve the effects of improving uneven strength, avoiding floating, and enhancing overall strength and toughness

Active Publication Date: 2021-11-02
福建泉州市宝质混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of insufficient overall strength and toughness of traditional fiber concrete, and provide a high-strength fiber concrete and its preparation method

Method used

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  • A kind of high-strength fiber concrete and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-strength fiber concrete, its raw material components include: 50 parts of gravel, 350 parts of P.O.42.5 Portland cement, 2 parts of sodium methylene dibenzoate (NNO), 150 parts of water, polypropylene fiber and glass 35 parts of fiber mixture, fiber length of 20mm, 60 parts of epoxy resin, 15 parts of bentonite, 40 parts of calcium chloride aqueous solution and sodium carbonate aqueous solution of the same concentration;

[0025] Further, the particle size is 8mm, the modulus is 2.5, the apparent density is 2400kg / m3, and the mud content is 3.5%.

Embodiment 2

[0027] A high-strength fiber concrete, its raw material components include: 50 parts of gravel, 350 parts of P.O.42.5 Portland cement, 2 parts of sodium methylene dibenzoate (NNO), 150 parts of water, polypropylene fiber and glass 40 parts of fiber mixture, the fiber length is 20mm, 60 parts of epoxy resin, 15 parts of bentonite, 40 parts of calcium chloride aqueous solution and sodium carbonate aqueous solution of the same concentration;

[0028] Further, the particle size is 8mm, the modulus is 2.5, the apparent density is 2400kg / m3, and the mud content is 3.5%.

Embodiment 3

[0030] A high-strength fiber concrete, its raw material components include: 50 parts of gravel, 350 parts of P.O.42.5 Portland cement, 2 parts of sodium methylene dibenzoate (NNO), 150 parts of water, polypropylene fiber and glass 45 parts of fiber mixture, the fiber length is 20mm, 60 parts of epoxy resin, 15 parts of bentonite, 40 parts of calcium chloride aqueous solution and sodium carbonate aqueous solution of the same concentration;

[0031] Further, the particle size is 8mm, the modulus is 2.5, the apparent density is 2400kg / m3, and the mud content is 3.5%.

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Abstract

The invention discloses a high-strength fiber concrete and a preparation method thereof, belonging to the technical field of building materials. The raw material components of the high-strength fiber concrete include: 50-60 parts of gravel, 350-400 parts of cement, and 2-2 parts of water reducer 2.5 parts, 150-200 parts of water, 30-45 parts of fiber mixture, 60-80 parts of adhesive, 15-20 parts of bentonite, 40-50 parts of calcium chloride aqueous solution and sodium carbonate aqueous solution of the same concentration. The mixture is laid in the square mold and concrete in three dimensions, and under the action of vibration and flipping, the fibers in each dimension are mixed evenly, and they will cross-link with each other to form a three-dimensional network, which greatly improves the quality of the fibers. The tensile strength of each position of concrete reduces the phenomenon of cracking after solidification, effectively improves the compactness of fiber concrete, and significantly enhances its overall strength and toughness.

Description

technical field [0001] The invention discloses a high-strength fiber concrete and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Concrete is the most widely used building material in the world. Concrete has high compressive strength, but its tensile strength is very low, which leads to the disadvantages of high brittleness, poor toughness, and poor deformation resistance of concrete. To compensate for concrete's lack of tensile strength, steel bars are often used to reinforce concrete. In order to overcome the brittleness of ordinary concrete and high-performance concrete, asbestos fibers, steel fibers, carbon fibers, polyvinyl alcohol fibers, polypropylene fibers, and basalt fibers with toughening effects and longer fibers are used in concrete. However, in the preparation process of the existing fiber concrete, the fiber concrete with higher strength and better toughness than ordinary concrete can be obt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04B28B1/087B28B1/52
CPCB28B1/087B28B1/52C04B28/04C04B2201/50C04B14/02C04B2103/302C04B16/0633C04B14/42C04B2103/44C04B14/104C04B22/10C04B22/124C04B14/48
Inventor 陈炜强
Owner 福建泉州市宝质混凝土有限公司