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High iron slag power doped wave-absorbing foam concrete and preparation method thereof

A technology of foam concrete and iron ore slag powder, which is applied in the cross field of building material science and electromagnetic science, can solve the problems of high cost, high material density, and inability to take into account thermal insulation performance, etc., so as to improve the wave-absorbing ability and good wave-absorbing performance , Improve the effect of electromagnetic performance and impedance matching performance

Inactive Publication Date: 2012-09-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a foam concrete mixed with high iron slag powder, which can effectively solve the shortcomings of high density, high cost, and inability to take into account the thermal insulation performance of the material.

Method used

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  • High iron slag power doped wave-absorbing foam concrete and preparation method thereof
  • High iron slag power doped wave-absorbing foam concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 foam concrete design bulk density 400kg / m 3 , thickness is 25mm

[0031] ① Mix 5g of calcium carbonate whiskers, 300g of high iron slag powder, and 700g of ordinary portland cement, and stir evenly to obtain material Ⅰ;

[0032] ②Mix 10g of animal and vegetable protein composite foaming agent with 200g of water, and make foam for 3 minutes to obtain foam;

[0033] ③Mix material I, 10g polycarboxylate superplasticizer and 300g water to obtain a slurry;

[0034] ④ Mix the foam with the slurry and stir evenly to obtain material II;

[0035] ⑤ Mold casting: inject material II into the mold, shake it flat, and cure it in a cement curing box with a temperature of 20±2°C and a relative humidity of >95% for 24 hours;

[0036] ⑥ demoulding;

[0037] ⑦Curate in a curing room at 20±2°C and relative humidity >95% until 28 days old.

[0038] Dry the product in an electric blast drying oven at 60°C for 24 hours before performing a performance test. The thermal conducti...

Embodiment 2

[0039] Example 2 Foam concrete design bulk density 500kg / m 3 , thickness is 25mm

[0040] ① Mix 5g of carbon nanotubes, 200g of high iron slag powder, and 800g of ordinary portland cement, and stir evenly to obtain material Ⅰ;

[0041] ②Mix 10g of animal and vegetable protein composite foaming agent with 100g of water, and make foam for 3 minutes to obtain foam;

[0042] ③Mix the material I, 10g of polycarboxylate superplasticizer and 400g of water to obtain a slurry;

[0043] ④ Mix the foam with the slurry and stir evenly to obtain material II;

[0044] ⑤ Mold casting: inject material II into the mold, shake it flat, and cure it in a cement curing box with a temperature of 20±2°C and a relative humidity of >95% for 24 hours;

[0045] ⑥ demoulding;

[0046] ⑦Curate in a curing room at 20±2°C and relative humidity >95% until 28 days old.

[0047] Dry the product in an electric blast drying oven at 60°C for 24 hours before performing a performance test. The thermal conducti...

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Abstract

The invention relates to a preparation method of high iron slag power doped wave-absorbing foam concrete, wherein the preparation method comprises the step of mixing cement, a physical foaming agent, an addition agent, microfiber, a polycarboxylic acid efficient water reducing agent and water. The preparation method is characterized in that the addition agent is high iron slag power, wherein the high iron slag power and cement are mixed according to the mass ratio of (10-40):(60-90). The adopted material for preparing the foam concrete comprises the high iron slag power which belongs to byproducts in the steel smelting process, wherein the high iron slag power contains a great amount of ferric oxide components, has the properties of magnetism loss and dielectric loss, and can act as a wave-absorbing agent of a cheap building material; and the high iron slag power has wide sources, is low in price, can turn waste into wealth when being used as the building material, and achieves the aim of energy conservation and environment friendliness.

Description

technical field [0001] The invention relates to a wave-absorbing foam concrete mixed with high iron slag powder and a preparation method thereof, which belongs to the cross technical field of building material science and electromagnetic science. Background technique [0002] Absorbing foam concrete is a building functional material that can convert incident electromagnetic waves into other forms of energy and dissipate electromagnetic waves. Significance. Foamed concrete has the characteristics of light weight, good thermal insulation performance, sound insulation and fire resistance, etc., and is widely used in energy-saving wall materials. At present, the research on building microwave-absorbing materials mainly focuses on adding metal powder, ferrite, fiber, carbon powder, whiskers, EPS and other materials to cement-based materials. , will affect the strength of cement-based materials, and the resulting absorbing building materials will have high density and high cost....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/10C04B18/12
CPCY02W30/91
Inventor 吕兴军曹明莉段玉平
Owner DALIAN UNIV OF TECH
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