Steel slag carbon fiber conductive concrete and preparation method thereof

A technology of conductive concrete and steel slag carbon fiber, which is applied in the field of concrete and its preparation, can solve the problems of poor practicability and poor crack resistance of steel slag concrete, and achieve the improvement of compressive strength and electric heating performance, good conductivity and good dispersion Effect

Inactive Publication Date: 2018-07-13
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, steel slag concrete has also been produced, but because the steel slag is in the form of fine particles, it is not conducive to the formation of a relatively coherent conductive path in the concrete, and compared with carbon fiber concrete, the crack resistance is poorer, which leads to the practicality of steel slag concrete in engineering. Not strong

Method used

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  • Steel slag carbon fiber conductive concrete and preparation method thereof
  • Steel slag carbon fiber conductive concrete and preparation method thereof
  • Steel slag carbon fiber conductive concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Weigh 30 parts of water at 20°C (by weight, the fractions in the following examples are all by weight), add 0.4 part of dispersant methylcellulose, stir while adding, continue stirring for 3 Minutes to fully dissolve;

[0035] (2) Add 0.03 parts of defoamer tributyl phosphate, and continue to stir until there is an obvious sticky feeling when touched by hand;

[0036] (3) Add 1.6 parts of polyacrylonitrile-based carbon fibers with a monofilament length of 9 mm, and stir slowly until the carbon fibers are evenly dispersed;

[0037] (4) 98 parts of ordinary Portland cement with label 42.5, 100 parts of ordinary river sand, 150 parts of crushed stone with a particle size of 5-20 mm, 15 parts of first-grade fly ash, 0.8 parts of FDN high-efficiency water reducer, wind quenching Put 16 parts of converter steel slag powder and the remaining 20 parts of water into the mixer, and pre-mix for 1 minute;

[0038] (5) Add the uniformly dispersed carbon fiber solution obtained...

Embodiment 2

[0044] (1) Weigh 30 parts of water at 20°C, add 0.6 parts of hydroxyethyl cellulose as a dispersant, stir while adding, and continue stirring for 3 minutes after adding all of it to make it fully dissolve;

[0045] (2) Add 0.05 parts of defoamer tributyl phosphate, and continue to stir until there is an obvious sticky feeling when touched by hand;

[0046] (3) Add 1.8 parts of polyacrylonitrile-based carbon fibers with a monofilament length of 12 mm, and stir slowly until the carbon fibers are evenly dispersed;

[0047](4) 100 parts of ordinary Portland cement with label 42.5, 105 parts of ordinary river sand, 158 parts of crushed stone with a particle size of 5-16mm, 16 parts of first-grade fly ash, 0.8 parts of FDN high-efficiency water reducer, wind quenching Put 16 parts of converter steel slag powder and the remaining 25 parts of water into the mixer, and pre-mix for 1 minute;

[0048] (5) Add the uniformly dispersed carbon fiber solution obtained in step (3) into the mi...

Embodiment 3

[0053] (1) Weigh 33 parts of water at 20°C, add 0.63 parts of sodium carboxymethylcellulose as a dispersant, stir while adding, and continue stirring for 3 minutes after adding all of it to make it fully dissolve;

[0054] (2) Add 0.1 parts of defoamer tributyl phosphate, and continue to stir until the sticky feeling is obvious when touched by hand;

[0055] (3) Add 2.0 parts of polyacrylonitrile-based carbon fibers with a monofilament length of 12 mm, and stir slowly until the carbon fibers are evenly dispersed;

[0056] (4) 102 parts of ordinary Portland cement with label 42.5, 110 parts of ordinary river sand, 150 parts of crushed stone with a particle size of 5-20mm, 16 parts of first-grade fly ash, 1.5 parts of FDN high-efficiency water reducer, wind quenching Put 26 parts of converter steel slag powder and the remaining 22 parts of water into the mixer, and pre-mix for 1 minute;

[0057] (5) Add the uniformly dispersed carbon fiber solution obtained in step (3) into the...

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Abstract

The invention discloses steel slag carbon fiber conductive concrete, which is prepared from the following components: 98-102 parts of cement, 100-110 parts of sand, 150-165 parts of crushed stone, 1.6-2.0 parts of carbon fibers, 50-55 parts of water, 15-16 parts of fly ash, 0.8-1.5 parts of a water reducing agent, 0.03- 0.1 part of a defoaming agent, 0.4-0.73 part of a dispersing agent and 16-26 parts of steel slag powder. The steel slag carbon fiber conductive concrete provided by the invention adopts steel slag, the carbon fibers, the dispersing agent and the like which have a synergistic effect, and has good electrical conductivity; the electrical resistivity of the conductive concrete can be reduced to 0.65 omega.m and is close to the resistivity of the conventional carbon fiber concrete; but due to the addition of the steel slag lower in cost, and the consumption of the carbon fibers higher in cost is reduced, so that the manufacturing cost is further lowered on the whole; the dispersity of the carbon fibers in the steel slag carbon fiber conductive concrete is good, so that the compressive strength and electric heating performance of the concrete are both improved.

Description

technical field [0001] The invention relates to a concrete and a preparation method thereof, in particular to a steel slag carbon fiber conductive concrete and a preparation method thereof. Background technique [0002] Concrete is one of the most widely used building materials at present. With the continuous progress of modern material science, concrete has gradually developed towards high strength, high performance and intelligence. Conductive concrete with self-sensing, self-adapting, self-healing and electrothermal effects has also attracted more and more attention. But concrete itself is not a good conductor. In order to reduce its resistivity and make the concrete material have good conductivity, it is necessary to add conductive phase materials to it. The conductive phase materials added can be divided into fibrous and powdery according to their appearance characteristics. The fibrous conductive phase materials mainly include steel fibers and carbon fibers, etc.; the...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02C04B111/94
CPCC04B20/02C04B28/04C04B2111/94C04B2201/50C04B14/06C04B14/02C04B14/386C04B18/08C04B2103/302C04B18/142C04B2103/50C04B2103/408
Inventor 韩菊红刘大超王珂珣兰晓芳李毕德王双双李明轩
Owner ZHENGZHOU UNIV
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