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High-strength fiber concrete and preparation method thereof

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, and achieve the effects of improving uneven strength, improving compactness, and avoiding floating

Active Publication Date: 2019-12-17
福建泉州市宝质混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • High-strength fiber concrete and preparation method thereof

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Effect test

Embodiment 1

[0024] A high-strength fiber concrete, its raw material components include: 50 parts of crushed stone, 350 parts of PO42.5 Portland cement, 2 parts of sodium methylene dibenzoate (NNO), 150 parts of water, polypropylene fiber and glass 35 parts of fiber mixture, 20mm fiber length, 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 crushed stone, 350 parts of PO42.5 Portland cement, 2 parts of sodium methylene dibenzoate (NNO), 150 parts of water, polypropylene fiber and glass 40 parts of fiber mixture, 20mm fiber length, 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 crushed stone, 350 parts of PO42.5 Portland cement, 2 parts of sodium methylene dibenzoate (NNO), 150 parts of water, polypropylene fiber and glass 45 parts of fiber mixture, 20mm fiber length, 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 high-strength fiber concrete and a preparation method thereof, and belongs to the technical field of building materials. The raw material components of the high-strength fiberconcrete comprise 50-60 parts of crushed stones, 350-400 parts of cement, 2-2.5 parts of a water reducing agent, 150-200 parts of water, 30-45 parts of a fiber mixture, 60-80 parts of an adhesive, 15-20 parts of bentonite, 40-50 parts of a calcium chloride aqueous solution and 40-50 parts of a sodium carbonate aqueous solution with the same concentration. The fiber mixture is laid in a square moldand concrete according to three dimensions, under the action of shaking and overturning, fibers in all dimensions are uniformly mixed and cross-linked with each other to form a three-dimensional network, thus greatly improving the tensile strength of each position of the fiber concrete, reducing the cracking phenomenon after solidification, effectively improving the compactness of the fiber concrete, and obviously enhancing the overall strength and toughness.

Description

Technical field [0001] The invention discloses a high-strength fiber concrete and a preparation method thereof, and belongs 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 shortcomings of concrete brittleness, poor toughness, and poor resistance to deformation. In order to make up for the shortcomings of concrete in tensile strength, steel bars are usually 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, which have a toughening effect, are used in concrete with longer fibers. However, in the preparation process of the existing fiber concrete, the fiber material is directly added to the concrete and then mixed even...

Claims

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Application Information

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Patent Type & Authority Applications(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
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