Electromagnetic wave-absorbing ceramsite concrete

A technology of ceramsite concrete and electromagnetic wave absorption, which is applied in the field of electromagnetic wave-absorbing ceramsite concrete and concrete materials that can absorb electromagnetic waves, and can solve the problems of large-scale use of construction projects, limited construction technology, and high cost.

Inactive Publication Date: 2015-05-20
BEIJING HUAYU XINAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of absorbing material obviously has good absorbing performance, but due to the high cost and th

Method used

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  • Electromagnetic wave-absorbing ceramsite concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Use 100kg of Portland cement clinker and 10kg of conductive graphite or conductive carbon black to mix and ball mill to obtain a particle size distribution of s / v=227828.62cm 2 / cm 3 ;s / g=7837.46m 2 / g; Dav=5.46μm, D[4.3]=5.46μm; D[3.2]=2.64μm powder, specific surface area 600m 2 / g or more, water-based gelling material with a surface resistivity of 500Ω / cm-3000Ω / cm.

[0014] Using 100kg particle size 2mm-5mm, the surface is microporous, and the specific surface area is 1200-15000m 2 / g of ceramsite, as aggregate.

[0015] The water-based cementitious material with conductive properties and the dry powder of ceramsite aggregate were mixed and stirred for > 10 minutes, then 36kg of water was added to wet mix and stirred for 10 minutes, poured into the mold for curing, and prepared as electromagnetic wave-absorbing ceramsite concrete specimen.

[0016] After testing, the electromagnetic absorbing ceramsite concrete specimen has a microwave absorption efficiency of 10d...

Embodiment 2

[0018] Use 100kg of Portland cement clinker and 10kg of conductive graphite or conductive carbon black to mix and ball mill to obtain a particle size distribution of s / v=227828.62cm 2 / cm 3 ;s / g=7837.46m 2 / g; Dav=5.46μm, D[4.3]=5.46μm; D[3.2]=2.64μm powder, specific surface area 600m 2 / g or more, water-based gelling material with a surface resistivity of 500Ω / cm-3000Ω / cm.

[0019] Using 200kg particle size 2mm-5mm, the surface is microporous, and the specific surface area is 1200-15000m 2 / g of ceramsite, as aggregate.

[0020] The water-based cementitious material with conductive properties is mixed with the dry powder of ceramsite aggregate for > 10 minutes, then 60kg of water is added for wet mixing and stirred for 10 minutes, then poured into the mold for curing, and the electromagnetic wave-absorbing ceramsite concrete specimen is prepared.

[0021] After testing, the electromagnetic absorbing ceramsite concrete specimen has a microwave absorption efficiency of 15dB...

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Abstract

The invention belongs to the field of building interior and exterior wall body surface concrete building materials, and particularly to a concrete material capable of absorbing electromagnetism. According to the present invention, a silicate cement clinker and electric conduction graphite or electric conduction carbon black are subjected to ball milling to obtain an aqueous cementing material having electric conductivity, and the aqueous cementing material and a ceramsite aggregate having multi-level micro-pores are prepared into the electromagnetic wave-absorbing ceramsite concrete according to a certain ratio, wherein the aqueous cementing material has a certain electric conductivity, the specific surface area of the ceramsite aggregate is two times larger than the specific surface area of the aqueous cementing material, the aqueous cementing material having the small specific surface area is doped into the ceramsite micro-pore having the large specific surface area so as to make the ceramsite aggregate have the dielectric property, and the electromagnetic wave enters the ceramsite aggregate having the dielectric property and then is absorbed and converted into the heat energy so as to provide the electromagnetic wave absorbing effect.

Description

1. Technical field: [0001] The invention belongs to the field of plastered concrete building materials for interior and exterior walls of buildings, and in particular relates to concrete materials capable of absorbing electromagnetic waves. The present invention uses Portland cement clinker and conductive graphite or conductive carbon black ball mill to become a water-based gelling material with conductive characteristics, and ceramsite prepared into multi-level micropores after high-temperature calcination is used as aggregate, and is formulated into concrete in a certain proportion. , to obtain electromagnetic wave-absorbing ceramsite concrete with wave-absorbing performance. 2. Background technology: [0002] The electromagnetic pollution brought by the information society has seriously affected people's life and health, and has become an urgent electromagnetic pollution hazard that needs to be solved. According to the introduction of relevant departments, with the rapid...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/02
Inventor 祝培华祝文军孙明
Owner BEIJING HUAYU XINAO TECH
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