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A kind of dense polymer concrete with high insulation and its preparation method and application

A high-insulation, polymer technology, used in the field of concrete preparation, can solve the problems of reducing the electrical properties and mechanical strength of concrete, and achieve the effects of increasing compactness, improving insulation and mechanical strength, and eliminating free water.

Active Publication Date: 2020-01-31
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional concrete preparation process, the concrete is mixed in an open environment, resulting in many air bubbles existing in the concrete for a long time during mixing, and many small hole defects remain in the interior after the concrete is hydrated, which reduces the concrete. Electrical properties and mechanical strength

Method used

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  • A kind of dense polymer concrete with high insulation and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0029] The invention provides a high-insulation dense polymer concrete and a preparation method thereof, comprising the following steps:

[0030] 1) Add 120g of ordinary Portland cement, 15g of wollastonite, 10g of mica, 10g of silica, and 0.1g of polycarboxylate water reducer into a 250mL stirring tank, and stir evenly; mix 54.2g of water, 0.01g of Deform W -098 water-based defoamer and 15g of styrene-acrylic emulsion are mixed evenly and then added to the above mixture, stirred evenly under the stirring at a rotating speed of 200r / min, and it becomes fluid;

[0031] 2) After the cement mortar is stirred for 5 minutes, use a vacuum pump to evacuate the stirring tank, keep the vacuum at 0.06MPa, and stir for 20 minutes;

[0032] 3) Pour the mixture into the mold, vibrate to make it level, then move it into the curing box, and cure it for 8 days at a temperature of 20°C and a relative humidity of 95%.

[0033] 4) The sample is taken out from the curing box, and cured in a dry ...

Embodiment 2

[0035] The invention provides a high-insulation dense polymer concrete and a preparation method thereof, comprising the following steps:

[0036] 1) Add 120g of ordinary Portland cement, 15g of wollastonite, 10g of mica, 10g of silica, and 0.1g of polycarboxylate water reducer into a 250mL stirring tank, and stir evenly; mix 53.5g of water, 0.01g of Deform W -098 water-based defoamer and 20g of styrene-acrylic emulsion are mixed evenly and then added to the above mixture, stirred evenly under the stirring at a rotating speed of 200r / min, and it becomes fluid;

[0037] 2) After the cement mortar is stirred for 5 minutes, use a vacuum pump to evacuate the stirring tank, keep the vacuum at 0.08MPa, and stir for 20 minutes;

[0038] 3) Pour the mixture into the mold, vibrate to make it level, then move it into the curing box, and cure it for 8 days at a temperature of 20°C and a relative humidity of 95%.

[0039] 4) The sample is taken out from the curing box, and cured in a dry ...

Embodiment 3

[0041] The invention provides a high-insulation dense polymer concrete and a preparation method thereof, comprising the following steps:

[0042] 1) Add 120g of ordinary Portland cement, 15g of wollastonite, 10g of mica, 10g of silica, and 0.1g of polycarboxylate water reducer into a 250mL stirring tank, and stir evenly; mix 52.4g of water, 0.01g of Deform W -098 water-based defoamer and 25g of styrene-acrylic emulsion are mixed evenly and then added to the above mixture, stirred evenly under the stirring at a rotating speed of 200r / min, and it is in a fluid state;

[0043] 2) After the cement mortar is stirred for 5 minutes, use a vacuum pump to evacuate the stirring tank, keep the vacuum at 0.01MPa, and stir for 20 minutes;

[0044]3) Pour the mixture into the mold, vibrate to make it level, then move it into the curing box, and cure it for 8 days at a temperature of 20°C and a relative humidity of 95%.

[0045] 4) The sample is taken out from the curing box, and cured in a...

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Abstract

The invention provides high insulating property dense polymer concrete as well as a preparation method and application thereof. The concrete comprises the following components in parts by mass: 120 parts of cement, 10-50 parts of emulsion, 30-60 parts of water, 10-30 parts of wollastonite, 5-30 parts of mica, 10-20 parts of silica, 0.1 part of a water reducing agent and 0.01 part of an antifoaming agent. The concrete is processed by the steps of stirring in vacuum, molding, curing, drying and the like. The concrete can be applied to electrical insulating pipelines, brackets and transformer bases. The polymer serves as an electrical insulating material, and the prepared concrete has the advantages of high insulating property, compactness, strength and durability and is simple in preparation process, low in cost, convenient in construction and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a high-insulation dense polymer concrete and a preparation method and application thereof. Background technique [0002] With people's increasing demand for work and quality of life and the rapid development of modern science and technology, people have put forward higher requirements for the development and utilization of energy and materials. At the 2015 Global Energy Internet Conference, in order to meet the construction needs of super-large capacity, resource-saving, environment-friendly, safe and reliable long-distance transmission lines, a new type of ultra-large-capacity transmission pipeline technology was proposed. direction, and laid a solid foundation for subsequent work related to power transmission technology. As the design focus of ultra-large-capacity and high-insulation transmission pipelines, the selection of insulating materials is extremely import...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B40/00C04B111/92
CPCC04B28/04C04B40/0089C04B2111/92C04B2201/32C04B2201/50C04B18/146C04B14/20C04B14/06C04B24/24C04B22/002C04B2103/50C04B24/2641
Inventor 吴雄陈轩恕吴威胡虔李辉潘吉林徐祖顺廖光福
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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