High-iron ground steel slag lightweight high-toughness wave absorption concrete and preparation method thereof

A high-toughness, concrete technology, applied in the interdisciplinary field of the combination of electromagnetics and material science, can solve the problems of restricting construction engineering, low absorption efficiency, and poor environmental adaptability, so as to improve bearing capacity, improve wave-absorbing performance, reduce reflection effect

Active Publication Date: 2010-12-22
WUHAN HAIJIAN ENVIRONMENTAL PROTECTION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many problems, including problems in composite structure, durability, and functional design, as well as problems in materials such as narrow frequency band, low absorption efficiency, poor stability, poor ...

Method used

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  • High-iron ground steel slag lightweight high-toughness wave absorption concrete and preparation method thereof
  • High-iron ground steel slag lightweight high-toughness wave absorption concrete and preparation method thereof
  • High-iron ground steel slag lightweight high-toughness wave absorption concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for preparing light-weight high-toughness wave-absorbing concrete with high-speed iron-ground steel slag, comprising the following steps:

[0023] 1) Selection of raw materials: according to the ratio of each raw material (kg / m 3 ) is: Portland cement: 110, fly ash: 120, high-speed iron milled steel slag: 70, ceramic sand: 600, superplasticizer: 3.0, basalt fiber 50, water: 154.

[0024] The strength grade of the Portland cement is 42.5MPa, and the specific surface area is greater than 350m 2 / kg; said fly ash is Class II fly ash with a density of 2.6-2.8g / cm 3 , the specific surface area is greater than 400cm 2 / g; The iron component mass content (Fe 2 o 3 ) is greater than 30%, and the specific surface area is greater than 600m 2 / kg; the bulk density of the pottery sand is less than 500m3 3 / kg, with a particle size of 0.6-4.75mm; the high-efficiency water-reducer is a polycarboxylate high-efficiency water-reducer with a water-reducing rate of 20%-25%,...

Embodiment 2

[0028] A method for preparing light-weight high-toughness wave-absorbing concrete with high-speed iron-ground steel slag, comprising the following steps:

[0029] 1) Selection of raw materials: according to the ratio of each raw material (kg / m 3 ) is: Portland cement: 130, fly ash: 90, high-speed iron milled steel slag: 90, ceramic sand: 620, superplasticizer: 3.2, basalt fiber 50, water: 160.

[0030] The strength grade of the Portland cement is 42.5MPa, and the specific surface area is greater than 350m 2 / kg; said fly ash is Class III fly ash with a density of 2.6-2.8g / cm 3 , the specific surface area is greater than 400cm 2 / g; The iron component mass content (Fe 2 o 3 ) is greater than 30%, and the specific surface area is greater than 600m 2 / kg; the bulk density of the pottery sand is less than 500m3 3 / kg; the particle size is 0.6-4.75 mm; the high-efficiency water-reducer is a polycarboxylate high-efficiency water-reducer with a water-reducing rate of 20%-25%, a...

Embodiment 3

[0034] A method for preparing light-weight high-toughness wave-absorbing concrete with high-speed iron-ground steel slag, comprising the following steps:

[0035]1) Selection of raw materials: according to the ratio of each raw material (kg / m 3 ) is: Portland cement: 150, fly ash: 90, high-speed iron milled steel slag: 110, pottery sand: 700, superplasticizer: 3.5, basalt fiber 50, water: 171.

[0036] The strength grade of the Portland cement is above 32.5MPa, and the specific surface area is greater than 350m 2 / kg; said fly ash is Class II fly ash with a density of 2.6-2.8g / cm 3 , the specific surface area is greater than 400cm 2 / g; The iron component mass content (Fe 2 o 3 ) is greater than 30%, and the specific surface area is greater than 600m 2 / kg; the bulk density of the pottery sand is less than 500m3 3 / kg; the particle size is 0.6-4.75 mm; the high-efficiency water-reducer is a polycarboxylate high-efficiency water-reducer with a water-reducing rate of 20%-2...

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Abstract

The invention relates to wave absorption concrete and a preparation method thereof. High-iron ground steel slag lightweight high-toughness wave absorption concrete is characterized in that the concrete is prepared from powder, aggregate and admixture, wherein the powder consists of silicate cement, fly ash and high-iron ground steel slag; the aggregate is ceramic sand; the admixture consists of efficient water reducing agent, basalt fiber and water; and the concrete comprises the following raw materials in a ratio (kg/m<3>): 110 to 300 kg/m<3> of silicate cement, 80 to 120 kg/m<3> of fly ash, 70 to 140 kg/m<3> of high-iron ground steel slag, 600 to 1,500 kg/m<3> of ceramic sand, 3.0 to 4.5 kg/m<3> of efficient water reducing agent, 30 to 50 kg/m<3> of basalt fiber and 150 to 180 kg/m<3> of water. The wave absorption concrete has the characteristics of energy conservation, environmental protection and low price.

Description

technical field [0001] The invention belongs to the cross technical field of the combination of electromagnetics and material science theory, and specifically relates to a wave-absorbing concrete and a preparation method thereof. Background technique [0002] Absorbing concrete is a building functional material that converts electromagnetic waves into other forms of energy and dissipates electromagnetic waves. It has important civilian uses for the protection of buildings, the purification of electromagnetic pollution, the confidentiality of electromagnetic information, and the invisibility of ground military buildings. with military significance. Therefore, the development of new low-cost, high-efficiency, and lightweight absorbing concrete has broad prospects for development. At present, the research on traditional wave-absorbing concrete is mainly to add fine carbon wire, iron wire, chiral helical coil, nano-wave absorbing agent, composite wave-absorbing agent, etc. to t...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B2111/00017C04B2111/40C04B28/02Y02W30/91C04B14/068C04B14/4668C04B18/08C04B18/142C04B20/0076C04B40/0028C04B2103/302C04B18/165C04B24/2641
Inventor 彭波查剑平田坤黄修林王胜利蔡明霞付天全何志斌严燕吉剑文庞明启
Owner WUHAN HAIJIAN ENVIRONMENTAL PROTECTION MATERIALS CO LTD
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