A kind of conductive concrete and its preparation method and application

A technology of conductive concrete and its production method, which is applied in the field of grounding system, can solve problems such as failure to meet permanent requirements, difficulties in excavating grounding trenches, hidden dangers of line operation, etc., and achieve material and labor cost savings, good operability, The effect of reducing the difficulty of construction

Active Publication Date: 2019-04-09
GEZHOUBA GRP ELECTRIC POWER COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In areas with high thunderstorms, the line tripping and maintenance of the wind farm due to lightning strikes the line, which has caused great losses from the perspective of economy and safety. At present, the grounding of the wind farm collector line is generally combined with the laying of horizontal grounding bodies and hammer grounding bodies. In view of the current construction conditions, there are generally the following problems. First, the maintenance of the grounding body cannot meet the permanent requirements, that is, 40 years; second, in areas with high soil resistivity, there are many surface rocks. Difficult areas for excavation and construction of grounding trenches; third, the construction of grounding trenches in recent years has occupied forest land, and more conventional land; fourth, during the construction of grounding trenches, some grounding trenches cross farmland, mountains, forests, etc. After the construction is completed, people in In daily production, it is easy to damage the grounding device, causing great safety hazards to the operation of the line

Method used

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  • A kind of conductive concrete and its preparation method and application
  • A kind of conductive concrete and its preparation method and application
  • A kind of conductive concrete and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A kind of conductive concrete, described concrete comprises the following components by weight:

[0054] 6 parts of carbon fiber, 43 parts of steel fiber, 68 parts of graphite, 1.38 parts of dispersant, 10 parts of preservative, and 5.2 parts of water reducing agent.

[0055] Preferably, the fixed carbon content of the graphite is greater than 99%;

[0056] The carbon fiber is polyacrylonitrile chopped carbon fiber, and the carbon fiber density is 1800kg / m 3, fiber length 6mm, tensile strength 3.5Gpa, carbon content 95%, bulk density 350g / L, water content 0.2%;

[0057] The steel fiber has a tensile strength of 2900Mpa and a density of 7800kg / m 3 Copper-coated microfilament steel fibers;

[0058] The dispersant is methyl cellulose.

[0059] The fine aggregate in the concrete is river sand with a particle size less than 5mm, and the coarse aggregate is gravel with a particle size ≤ 25mm; the cement in the concrete is P·II 42.5 grade ordinary portland cement.

[0060...

Embodiment 2

[0071] A kind of conductive concrete, described concrete comprises the following components by weight:

[0072] 9 parts of carbon fiber, 50 parts of steel fiber, 78 parts of graphite, 1.58 parts of dispersant, 15 parts of expansion preservative, and 6 parts of water reducing agent.

[0073] Preferably, the fixed carbon content of the graphite is greater than 99%;

[0074] The carbon fiber is polyacrylonitrile chopped carbon fiber, and the carbon fiber density is 1800kg / m 3 , fiber length 6mm, tensile strength 4.5Gpa, carbon content 93%, bulk density 300g / L, water content 0.25%;

[0075] The steel fiber has a tensile strength of 2900Mpa and a density of 7800kg / m 3 Copper-coated microfilament steel fibers;

[0076] The dispersant is methyl cellulose.

[0077] Preferably, the fine aggregate in the concrete is river sand with a particle size < 5mm, and the coarse aggregate is gravel with a particle size ≤ 25mm; the cement in the concrete is P·II 42.5 grade ordinary Portland ce...

Embodiment 3

[0088] A kind of conductive concrete, described concrete comprises the following components by weight:

[0089] 8 parts of carbon fiber, 46 parts of steel fiber, 72 parts of graphite, 1.47 parts of dispersant, 12 parts of preservative, and 5.88 parts of water reducing agent.

[0090] The fixed carbon content of the graphite is greater than 99%;

[0091] The carbon fiber is polyacrylonitrile chopped carbon fiber, and the carbon fiber density is 1800kg / m 3 , fiber length 6mm, tensile strength 3.5-4.5Gpa, carbon content ≥ 93%, bulk density ≥ 300g / L, water content < 0.3%;

[0092] The diameter of the steel fiber is 0.2mm, the length is 6mm, the tensile strength is > 2800Mpa, and the density is 7800kg / m 3 Copper-coated microfilament steel fibers;

[0093] The dispersant is methyl cellulose.

[0094] The high-efficiency water reducer ensures the fluidity of concrete, and is produced by Jiangsu Bote New Material Co., Ltd. Polycarboxylate high-performance, polycarboxylate-base...

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Abstract

The invention belongs to the field of grounding systems, and in particular relates to a conductive concrete and its production method and application. The concrete includes the following components in parts by weight: 6-9 parts of carbon fiber, 43-50 parts of steel fiber, 68-78 parts of graphite, 1.38-1.58 parts of dispersant, 10-15 parts of preservative, and water reducer 5.2~6 copies. The invention overcomes the problem that it is difficult to meet the requirement of grounding resistance value by common grounding method in some areas, or the difficulty in construction of common grounding system due to terrain restrictions, effectively reduces construction difficulty, improves grounding efficiency, and has good operability.

Description

technical field [0001] The invention belongs to the field of grounding systems, and in particular relates to a conductive concrete and its production method and application. Background technique [0002] In areas with high thunderstorms, the line tripping and maintenance of the wind farm due to lightning strikes the line, which has caused great losses from the perspective of economy and safety. At present, the grounding of the wind farm collector line is generally combined with the laying of horizontal grounding bodies and hammer grounding bodies. In view of the current construction conditions, there are generally the following problems. First, the maintenance of the grounding body cannot meet the permanent requirements, that is, 40 years; second, in areas with high soil resistivity, there are many surface rocks. Difficult areas for excavation and construction of grounding trenches; third, the construction of grounding trenches in recent years has occupied forest land, and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/02E04H12/12C04B111/94
CPCC04B14/024C04B28/04C04B2111/94E04H12/12C04B14/386C04B14/48C04B2103/408C04B2103/61C04B2103/302C04B14/06C04B18/12
Inventor 张鹏柳溪赵德强朱凡
Owner GEZHOUBA GRP ELECTRIC POWER COMPANY
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