Fiber reinforced concrete and preparation method thereof

A fiber-reinforced concrete technology, applied in the field of concrete, to achieve the effects of increasing compressive strength and flexural strength, excellent compressive strength, increasing crack resistance and compressive strength

Inactive Publication Date: 2021-01-26
何国辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a kind of fiber-reinforced concrete and its preparation method: prepare the reinforced fiber material through the reinforced fiber production equipment, add the acrylate emulsion to the curing box from the hopper, and then add Diatomite and rubber powder in the acrylate emulsion, start the stirring motor, and the rotation of the stirring motor drives the spiral stirring blade to rotate the diatomite and rubber powder in the acrylate emulsion to obtain the first mixture. By starting the first scraper, The heating wire in the second scraper releases heat to heat and dry the first mixture, start the second cylinder, the movable rod of the second cylinder shrinks and pulls the second scraper to move, and the second scraper is dried through the curing box The first mixture is scraped off, the first cylinder is started, the moving rods of the four first cylinders shrink and pull the first scraper to rise, and the first mixture dried on the first scraper is scraped off through the scraper frame, all The dry first mixture falls on the two crushing rollers, start the crushing motor, and the crushing motor runs through two linkage gears to drive the two crushing rollers to rotate, and the dry first mixture is crushed into powder, and the powdery first mixture p

Method used

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  • Fiber reinforced concrete and preparation method thereof
  • Fiber reinforced concrete and preparation method thereof
  • Fiber reinforced concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044]Example 1:

[0045]SeeFigure 1-9As shown, this embodiment is a fiber-reinforced concrete, including the following components by weight:

[0046]A fiber-reinforced concrete comprising the following components by weight:

[0047]Cement 50 parts, fly ash 30 parts, mineral powder 18 parts, water 30 parts, crushed stone 140 parts, river sand 120 parts, water reducing agent 1 part, carbon fiber 5 parts, brucite fiber 1 part, glass fiber 1.5 parts , 10 parts of epoxy resin, 5 parts of acrylic emulsion, 0.7 parts of dispersant, 1.8 parts of diatomaceous earth, 0.3 parts of rubber powder;

[0048]The dispersant is methyl cellulose; the water reducing agent is an aliphatic water reducing agent.

[0049]A method for preparing fiber reinforced concrete includes the following steps:

[0050]Step 1: Add the acrylic emulsion to the curing box 102 from the hopper 106 of the reinforced fiber production equipment, then add diatomaceous earth and rubber powder to the acrylic emulsion, start the stirring motor 105...

Example Embodiment

[0057]Example 2:

[0058]The difference between this embodiment and embodiment 1 lies in that: a fiber-reinforced concrete includes the following components by weight:

[0059]55 parts of cement, 35 parts of fly ash, 20 parts of mineral powder, 33 parts of water, 150 parts of gravel, 130 parts of river sand, 2 parts of water reducing agent, 7 parts of carbon fiber, 3 parts of brucite fiber, 2.3 parts of glass fiber , 13 parts of epoxy resin, 8 parts of acrylic emulsion, 1.0 part of dispersant, 2.2 parts of diatomaceous earth, 0.4 parts of rubber powder;

[0060]The dispersing agent is sodium lauryl sulfate; the water reducing agent is a naphthalene water reducing agent.

[0061]The performance of the fiber-reinforced concrete of Example 2 was tested. The test results: 7d compressive strength 34.3MPa, 14d compressive strength 48.6MPa, 28d compressive strength 63.7MPa; 7d flexural strength 7.01MPa, 28d flexural strength 11.11 MPa.

Example Embodiment

[0062]Example 3:

[0063]The difference between this embodiment and embodiment 1 lies in that: a fiber-reinforced concrete includes the following components by weight:

[0064]60 parts of cement, 40 parts of fly ash, 22 parts of mineral powder, 36 parts of water, 160 parts of gravel, 140 parts of river sand, 3 parts of water reducing agent, 10 parts of carbon fiber, 5 parts of brucite fiber, 3 parts of glass fiber , 25 parts of epoxy resin, 10 parts of acrylate emulsion, 1.4 parts of dispersant, 2.6 parts of diatomaceous earth, 0.5 parts of rubber powder;

[0065]The dispersant is sodium carboxymethyl cellulose; the water reducing agent is a polycarboxylic acid water reducing agent.

[0066]The performance of the fiber-reinforced concrete of Example 3 was tested. The test results: 7d compressive strength 35.6MPa, 14d compressive strength 49.3MPa, 28d compressive strength 65.1MPa; 7d flexural strength 7.16MPa, 28d flexural strength 11.28 MPa.

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Abstract

The invention discloses fiber-reinforced concrete and a preparation method thereof. Carbon fibers, brucite fibers, glass fibers, epoxy resin, acrylate emulsion, a dispersing agent, diatomite and rubber powder are used to prepare a reinforced fiber material by using reinforced fiber production equipment; and then cement, fly ash, mineral powder, water, gravels, river sand, a water reducing agent and the reinforced fiber material are uniformly mixed to prepare the fiber reinforced concrete. The fiber reinforced concrete has excellent compressive strength and flexural strength; and according to the reinforced fiber production equipment, raw materials are stirred evenly through a powder making mechanism and then dried, then the raw materials are smashed into powder, the smashed powder is screened through a screening mechanism according to the particle size, the powder with the small particle size is selected to be used for preparing concrete, reinforced fiber materials are evenly dispersedin the concrete, thus the effect of the reinforced fiber material is fully exerted, and the prepared concrete is further good in mechanical property and high in quality.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a fiber-reinforced concrete and a preparation method thereof. Background technique [0002] Concrete is one of the most important civil engineering materials today. It is a kind of artificial stone made of cementitious materials, granular aggregates, water, and admixtures and admixtures added when necessary. It is uniformly stirred, densely formed, cured and hardened. Concrete has raw materials. Rich, low price, and simple production process, so its usage is increasing. [0003] The patent with the application number CN201710098518.7 discloses a concrete and its preparation method, wherein a concrete includes the following components in parts by weight: 103-133 parts of cement; 20-36 parts of river sand; 21-31 parts of gravel 45-60 parts of water; 12-23 parts of fiber mixture; 21-33 parts of lignin; 20-36 parts of adhesive; 12-18 parts of concrete expansion agent; 35-51 parts of filler;...

Claims

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Application Information

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IPC IPC(8): C04B28/02
CPCC04B28/02C04B2201/50C04B18/08C04B18/141C04B14/02C04B14/06C04B14/386C04B14/46C04B14/42C04B24/281C04B24/2641C04B18/22C04B14/08C04B24/383C04B24/08C04B24/16C04B2103/302
Inventor 何国辉
Owner 何国辉
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