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A kind of anti-crack concrete with anti-electromagnetic radiation and preparation method thereof

A technology for preventing electromagnetic radiation and concrete, applied in the field of building materials, can solve problems such as difficulty in dealing with remediation, affecting the use of buildings, and reducing

Active Publication Date: 2018-01-12
常州中铁一建混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Cracks in concrete basement walls are common, which not only affects the use of buildings due to leakage, but also seriously reduces
[0006] The durability of the building will cause great difficulties for future treatment and remediation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1. Preparation of absorbing material:

[0069] (1) Load 1.5 parts of BaFe 12 o 19 After the halloysite nanotubes and 0.5 parts of methacryloxypropyltrimethoxysilane were stirred at room temperature for 3 h, 10 parts of polypropylene were added and stirred for 3 h to form a mixture 1;

[0070] (2) At room temperature, take 0.9 parts of dielectric loss nanocomposite material A, add 0.3 parts of γ-(2,3-glycidoxy)propyltrimethoxysilane dropwise, stir for 1 h, then add 12 part of polypropylene and stirred for 1.5 h; then added 0.8 part of dielectric loss nanocomposite material B, added dropwise 0.2 part of γ-(2,3-glycidoxy) propyltrimethoxysilane, and stirred for 1 h, Obtain mixture 2;

[0071] (3) Put Mixture 1 and Mixture 2 into a high-speed mixer at the same time, and disperse at 300 r / min for 2 h; then raise the temperature to 110°C, and process at 550 r / min for 20 min, then transfer to In the cold mixing pot, when the temperature drops to 53°C, the material is disch...

Embodiment 2

[0079] 1. Preparation of absorbing material:

[0080] (1) Load 1.6 parts of BaFe 12 o 19 After the halloysite nanotubes and 0.4 parts of methacryloxypropyltrimethoxysilane were stirred at room temperature for 3 h, 12 parts of polypropylene were added and stirred for 3 h to form a mixture 1;

[0081] (2) At room temperature, take 1.2 parts of dielectric loss nanocomposite material A, add 0.5 parts of γ-(2,3-glycidoxy)propyltrimethoxysilane dropwise, stir for 1 h, then add 10 1 part of polypropylene and stirred for 1.5 h; then added 1.0 part of dielectric loss nanocomposite material B, added dropwise 0.2 part of γ-(2,3-glycidoxy) propyltrimethoxysilane, and stirred for 1 h, Obtain mixture 2;

[0082] (3) Put Mixture 1 and Mixture 2 into the high-speed mixer at the same time, and disperse at 330 r / min for 2.5 h; then raise the temperature to 112°C, treat at 480 r / min for 22 minutes, and transfer to the cold In the mixing pot, when the temperature drops to 52°C, discharge the ...

Embodiment 3

[0090] 1. Preparation of absorbing material:

[0091] (1) Add 2 loads of BaFe 12 o 19 After the halloysite nanotubes and 0.6 parts of methacryloxypropyltrimethoxysilane were stirred at room temperature for 3 h, 12 parts of polypropylene were added and stirred for 3 h to form a mixture containing magnetic loss nanocomposites 1;

[0092] (2) At room temperature, take 1.3 parts of dielectric loss nanocomposite material A, add 0.6 parts of γ-(2,3-glycidoxy)propyltrimethoxysilane dropwise, stir for 1 h, then add 20 1 part of polypropylene and stirred for 1.5 h; then add 1.2 parts of dielectric loss nanocomposite B, drop 0.2 parts of γ-(2,3-glycidoxy) propyltrimethoxysilane, and stir for 1 h, Obtain mixture 2;

[0093] (3) Put Mixture 1 and Mixture 2 into a high-speed mixer at the same time, and disperse at 350 r / min for 3 h; then raise the temperature to 115°C, treat at 550 r / min for 25 min, and transfer to In the cold mixing pot, when the temperature drops to 55°C, discharge ...

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Abstract

The invention discloses anti-electromagnetic-radiation-resistant anti-cracking concrete and a preparation method thereof, wherein the concrete is prepared from the following raw materials: 135-155 kg / m<3> of water, 320-380 kg / m<3> of cement, 20-40 kg / m<3> of fly ash, 600-800 kg / m<3> of fine aggregate, 950-1150 kg / m<3> of coarse aggregate, 2.0-3.0 kg / m<3> of a reducing toughening agent, 10-20 kg / m<3> of an inner curing agent, 3.0-5.0 kg / m<3> of a water reducing agent, 40-50 kg / m<3> of steel fibers, 2.0-3.0 kg / m<3> of a wave absorbing material, and other raw materials. The concrete of the present invention has characteristics of enhanced toughness, enhanced compactness, enhanced crack resistance, enhanced impact resistance, enhanced impermeability, and radiation wave resistance.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to anti-crack concrete with anti-electromagnetic radiation and a preparation method thereof. Background technique [0002] At present, as the fourth largest global environmental problem after water pollution, air pollution and noise pollution, the harm of electromagnetic wave radiation is becoming more and more serious. Correspondingly, the electromagnetic wave radiation protection of various building facilities is also increasingly important. Especially the buildings adjacent to radars, microwave base stations, high-power wireless communication transmitters, etc., the functional buildings of scientific research institutes, hospitals, banks and other units with a large number of sophisticated electronic instruments inside, and the national defense and administrative buildings closely related to national security. The key building of the department, its electromagnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B22/08
CPCC04B28/00C04B40/0042C04B2201/50C04B18/08C04B14/48C04B14/06C04B14/02C04B24/40C04B22/06C04B2103/302C04B24/2623C04B22/08
Inventor 肖三霞
Owner 常州中铁一建混凝土有限公司
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