Haydite used as conductive concrete aggregate and preparation thereof

A technology of conductive concrete and aggregate, applied in the field of building materials, can solve problems such as difficulties, uneven distribution of concrete materials, affecting the uniform distribution of conductive network, etc., to achieve the effects of enhancing conductive performance, reducing dosage and reducing heat loss

Inactive Publication Date: 2009-07-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, it is quite difficult to disperse these materials evenly in the cement stone, which affects the uniformity of the conductive network; on the other hand, the conductive network formed by these conductive phase materials is only distributed in the cement stone, and in the unit In vo

Method used

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  • Haydite used as conductive concrete aggregate and preparation thereof
  • Haydite used as conductive concrete aggregate and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of ceramsite used as conductive concrete aggregate, which is composed of clay, iron powder, coke powder and Fe 2 o 3 It is fired from raw materials, and the mass percentage of each raw material is: clay 90%, iron powder 5%, coke powder 3%, Fe 2 o 3 2%.

[0028] Above-mentioned a kind of preparation method as the ceramsite of conductive concrete aggregate, it comprises the steps:

[0029] 1) Raw material pretreatment: Dry the clay (ordinary clay) taken from the soil until the moisture content is 4% (mass), grind it into a fine powder after crushing, and pass through a 0.075mm sieve; crush and grind commercially available coke , through a 0.075mm sieve to obtain coke powder;

[0030] The chemical composition of clay is SiO 2 + Al 2 O 3 Fe ...

Embodiment 2

[0043] A kind of ceramsite used as conductive concrete aggregate, which is composed of clay, iron powder, coke powder and Fe 2 o 3 It is fired from raw materials, and the mass percentage of each raw material is: clay 84%, iron powder 7%, coke powder 4%, Fe 2 o 3 5%.

[0044] Above-mentioned a kind of preparation method as the ceramsite of conductive concrete aggregate, it comprises the steps:

[0045] 1) Raw material pretreatment: drying the clay (ordinary clay) taken from the soil until the moisture content is 5% (mass), crushing and grinding into fine powder, passing through a 0.075mm sieve;

[0046] The chemical composition of clay is SiO 2 + Al 2 O 3 Fe 2 O 3 + ...

Embodiment 3

[0059] A preparation method of ceramsite used as conductive concrete aggregate, it comprises the steps:

[0060] 1) Raw material pretreatment: Dry the clay (ordinary clay) taken from the soil until the moisture content is 3% (mass), grind it to a powder with a particle size of ≤0.1mm after crushing; grind commercially available coke Finely grind into a powder with a particle size of ≤0.1mm to obtain coke powder;

[0061] 2) Selection of raw materials: according to the mass percentage of each raw material: clay 77%, iron powder 10%, coke powder 5%, Fe 2 o 3 8%, choose clay, iron powder, coke powder and Fe 2 o 3 as raw material, spare;

[0062] The iron powder is a commercially available industrial iron powder with a purity of ≥98% (by mass) and an average particle size of 0.005 to 0.01mm; the Fe 2 o 3 Fe is a commercially available industrial product 2 o 3 ;

[0063] 3) Embryo body forming: clay, iron powder, coke powder and Fe 2 o 3 Add water and stir in the blende...

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Abstract

The invention relates to a porcelain granule used as a conductive concrete aggregate and a preparation method thereof. The porcelain granule used as a conductive concrete aggregate is characterized in that the weight percentage of each material is as follows: 77 to 94 percent of clay, 3 to 10 percent of iron powder, 3 to 5 percent of coke dust, as well as 0 to 8 percent of FeO3; the sum of the weight percentage of each material is 100 percent. The preparation method for the porcelain granule used as a conductive concrete aggregate is characterized by comprising the following steps: 1) preprocessing the materials: the clay selected from soil is dried to have a water content being equal to or less than 5 percent, after being cracked, the clay is grinded to the powder the grain diameter of which is equal to or less than 0.1mm; then the coke sold in the market is cracked, and grinded into the powder the grain diameter of which is equal to or less than 0.1mm to obtain the coke dust; 2) selecting the materials; 3) shaping a blank: water is added for stirring, and the stirred materials are prepared into the ball-shaped grain blanks the grain diameters of which are between 5mm and 15mm by a pan-pelletizer; and 4) baking the porcelain granule to obtain the porcelain granule used as a conductive concrete aggregate. The porcelain granule used in the concrete as the aggregate can enhance the conductive performance of the concrete.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to ceramsite used as conductive concrete aggregate and a preparation method thereof. Background technique [0002] At present, conductive concrete is based on the original composition of concrete by adding appropriate conductive phase components, so that the concrete material has a certain degree of self-sensing, self-adaptation and damage self-repair under the effects of force-electricity and electricity-force. According to these characteristics, it can effectively predict the damage inside the concrete material, meet the needs of structural self-safety inspection, and improve the safety of concrete structures. Or the heating of concrete can be achieved through the electro-thermal effect, so that it has functions such as snow melting and deicing. [0003] In the past, the conductive phase materials added in the preparation of conductive concrete are usually carbon fib...

Claims

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Application Information

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IPC IPC(8): C04B33/04C04B33/13C04B14/04C04B33/34
CPCC04B18/023C04B33/04C04B2111/00439
Inventor 何永佳胡曙光吕林女丁庆军
Owner WUHAN UNIV OF TECH
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