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Cement-based conductive composite material and preparation method thereof

A conductive composite material, cement-based technology, applied in the field of cement materials, can solve problems such as poor electromagnetic wave absorption function, and achieve the effects of good electromagnetic wave absorption effect, improved fluidity, and strong electromagnetic wave absorption function.

Inactive Publication Date: 2020-12-25
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to at least solve one of the technical problems in the prior art, provide a cement-based conductive composite material, and solve the problem of poor electromagnetic wave absorption in a wide frequency range

Method used

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  • Cement-based conductive composite material and preparation method thereof
  • Cement-based conductive composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Weigh the following raw materials in parts by weight:

[0061] 80 parts of cement;

[0062] 120 parts of fly ash;

[0063] 85 parts of silica fume;

[0064] 85 parts of water;

[0065] 2 parts of DH-4004 water reducer;

[0066] 10 parts of rubber powder;

[0067] 5 parts of steel fiber;

[0068] 2 parts of carbon fiber;

[0069] 2 parts polyvinyl alcohol fiber;

[0070] Ferrite 45 parts.

[0071] Wherein, cement comprises the raw material of following parts by weight: 20.5 parts of SiO 2 , 3.2 parts of Fe 2 o 3 , 5.1 parts Al 2 o 3 , 62.5 parts of CaO, 1.05 parts of MgO, 2 parts of SO 3 , 0.65 K 2 O.

[0072] Fly ash comprises the raw material of following parts by weight: 52.5 parts of SiO 2 , 5.6 parts of Fe 2 o 3 , 30.6 parts Al 2 o 3 , 3.9 parts of CaO, 1.2 parts of MgO, 1.5 parts of SO 3 , 1.5 copies of K 2 O.

[0073] Silica fume comprises the following raw materials in parts by weight: 94.5 parts of SiO 2 , 0.76 Fe 2 o 3 , 0.25 parts of ...

Embodiment 2

[0085] Weigh the following raw materials in parts by weight:

[0086] 100 parts of cement;

[0087] 110 parts of fly ash;

[0088] 80 parts of silica fume;

[0089] 120 parts of water;

[0090] 3 parts of DH-4004 water reducer;

[0091] 12 parts of rubber powder;

[0092] 2 parts of steel fiber;

[0093] 3 parts of carbon fiber;

[0094] 1 part polyvinyl alcohol fiber;

[0095] 30 parts of ferrite.

[0096] Wherein, cement comprises the raw material of following parts by weight: 20.8 parts of SiO 2 , 3.3 parts of Fe 2 o 3 , 5.5 parts Al 2 o 3 , 63.5 parts of CaO, 1.1 parts of MgO, 2.1 parts of SO 3 , 0.67 K 2 O.

[0097] Fly ash comprises the raw material of following parts by weight: 53 parts of SiO 2 , 5.8 parts Fe 2 o 3 , 31 Al 2 o 3 , 4.1 parts of CaO, 1.3 parts of MgO, 1.6 parts of SO 3 , 1.6 K 2 O.

[0098] Silica fume comprises the following raw materials in parts by weight: 95 parts of SiO 2 , 0.8 parts of Fe 2 o 3 , 0.26 parts of Al 2 o 3 ,...

Embodiment 3

[0110] Weigh the following raw materials in parts by weight:

[0111] 90 parts of cement;

[0112] 140 parts of fly ash;

[0113] 90 parts of silica fume;

[0114] 70 parts of water;

[0115] 1 part of DH-4004 type water reducer;

[0116] 15 parts of rubber powder;

[0117] 2 parts of steel fiber;

[0118] 1 carbon fiber;

[0119] 1 part polyvinyl alcohol fiber;

[0120] 50 parts of ferrite.

[0121] Wherein, cement comprises the raw material of following parts by weight: 21.2 parts of SiO 2 , 3.5 parts of Fe 2 o 3 , 5.8 parts Al 2 o 3 , 65 parts of CaO, 1.3 parts of MgO, 2.3 parts of SO 3 , 0.7 K 2 O.

[0122] Fly ash comprises the raw material of following parts by weight: 54 parts of SiO 2 , 6 Fe 2 o 3 , 31.5 parts Al 2 o 3 , 4.3 parts of CaO, 1.5 parts of MgO, 1.65 parts of SO 3 , 1.65 K 2 O.

[0123] Silica fume comprises the following raw materials in parts by weight: 95.5 parts of SiO 2 , 0.82 Fe 2 o 3 , 0.27 parts of Al 2 o 3 , 0.55 parts of...

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Abstract

The invention provides a cement-based conductive composite material, and relates to the technical field of cement materials. The cement-based conductive composite material comprises the following components by weight: 80-100 parts of cement; 110-140 parts of fly ash; 80-100 parts of silica fume; 70-120 parts of water; 1-5 parts of a water reducing agent; 10 to 15 parts of rubber powder; 1-5 partsof steel fibers; 1-3 parts of carbon fiber; 1-3 parts of polyvinyl alcohol fiber; and 30-50 parts of ferrite. The invention also provides a preparation method of the cement-based conductive compositematerial, which comprises the following steps of: uniformly mixing the cement, the fly ash, the silica fume and the rubber powder; adding the water, the steel fibers, the carbon fibers, the polyvinylalcohol fibers, the ferrite and the water reducing agent, and stirring for 5-10 minutes; pouring the mixture into a mold, and vibrating for 1-3 minutes; pressurizing to remove bubbles, strickling thesurface, and maintaining for 24-36 hours; and carrying out demolding maintenance for 28-30 days. The material disclosed by the invention has a relatively strong electromagnetic wave absorption function in a wide frequency range, and has relatively good compressive strength.

Description

technical field [0001] The invention relates to the technical field of cement materials, in particular to a cement-based conductive composite material and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards and the continuous acceleration of the pace of life, in order to facilitate our daily life, various equipment such as TVs, computers, refrigerators, microwave ovens, TV relay towers, and mobile phone signal transmitting stations have entered our lives. They not only bring us convenience, but also bring us harm to our bodies. Electromagnetic waves radiated by electronic equipment affect the cardiovascular system, immune and metabolic functions of the human body, and have adverse effects on the human visual system. [0003] In today's construction production, cement and cement-based materials are the most widely used man-made materials. Traditional cement materials can no longer meet people's needs. Resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/94C04B18/08C04B18/14C04B14/38C04B14/48C04B14/36C04B16/06C04B24/24
CPCC04B28/00C04B2111/00258C04B2111/94C04B2201/50C04B18/08C04B18/146C04B2103/302C04B24/24C04B14/48C04B14/386C04B16/0641C04B14/363Y02W30/91
Inventor 邓辰星
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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