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Concrete composite reinforcement material for intermediate level waste disposal container and preparation method thereof

A composite reinforcement and waste disposal technology, applied in the field of building materials, can solve the problems of inability to demonstrate the long-term durability of synthetic fiber radiation-resistant glass fiber and basalt fiber in alkali resistance, and the inability to solve the problem of high-performance concrete brittleness and plastic cracking. To achieve the effects of convenient measurement control, lower production costs and higher production efficiency

Active Publication Date: 2019-08-06
SHANGHAI RES INST OF BUILDING SCI CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the single admixture composite technology cannot solve the brittleness and early plastic cracking problems of high-performance concrete, and fiber reinforced technology should be used comprehensively
Since the steel fibers commonly used in current research cannot demonstrate their long-term durability, synthetic fibers have radiation resistance problems, and glass fibers and basalt fibers have alkali resistance problems, it is advisable to choose carbon fibers that theoretically have no durability problems in concrete systems. fiber reinforced material

Method used

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  • Concrete composite reinforcement material for intermediate level waste disposal container and preparation method thereof
  • Concrete composite reinforcement material for intermediate level waste disposal container and preparation method thereof
  • Concrete composite reinforcement material for intermediate level waste disposal container and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The S95 mineral powder produced by Shanghai Baosteel New Building Materials Development Co., Ltd., the high-quality Class II fly ash and the silica fume produced by Elkem International Trade (Shanghai) Co., Ltd. were classified into Type I (50% mineral powder, 33.3% fly ash, Silica fume 16.7%), type II (mineral powder 56.7%, fly ash 16.7%, silica fume 26.7%) were mixed in a mixer for 15 minutes. The fully mixed composite admixture is placed in a forced mixer (composite admixture 97.7%: chopped carbon fiber 2.3%) and stirred for 15 minutes to The carbon fibers are completely dispersed to obtain Type I and Type II composite reinforcements.

Embodiment 2

[0023] The S95 mineral powder produced by Shanghai Baosteel New Building Materials Development Co., Ltd., the high-quality Class II fly ash and the silica fume produced by Elkem International Trade (Shanghai) Co., Ltd. were classified into Type I (mineral powder 40.4%, fly ash 40.4%, Silica fume 19.2%), type II (mineral powder 51.3%, fly ash 26.7%, silica fume 22.1%) were mixed in a mixer for 15 minutes. The fully mixed composite admixture and the chopped carbon fiber produced by Nanjing Weida Composite Materials Co., Ltd. with a length of 20mm are placed in a forced mixer (I type ratio: composite admixture 99.0%, short carbon fiber 1.0%; Type II ratio: 97.5% composite admixture, 2.5% chopped carbon fiber) and stir for 15 minutes until the carbon fiber is completely dispersed to obtain Type I and Type II composite reinforcements.

Embodiment 3

[0025] S95 mineral powder produced by Shanghai Baosteel New Building Materials Development Co., Ltd., high-quality Class II fly ash and silica fume produced by Elkem International Trade (Shanghai) Co., Ltd., according to type I (mineral powder 51.3%, fly ash 25.6%, Silica fume 23.1%), type II (mineral powder 60.6%, fly ash 10.1%, silica fume 29.3%) were mixed in a mixer for 15 minutes. The fully mixed composite admixture and the chopped carbon fiber produced by Nanjing Weida Composite Materials Co., Ltd. with a length of 20mm are placed in a forced mixer (I type ratio: composite admixture 97.5%, short carbon fiber 2.5%; Type II ratio: 99.0% composite admixture, 1.0% chopped carbon fiber) and stir for 15 minutes until the carbon fiber is completely dispersed to obtain Type I and Type II composite reinforcements.

[0026] The performance comparison of the products prepared in each embodiment is shown in Table 1.

[0027] Table 1 Comparison of effects of different proportions of...

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Abstract

The invention discloses a composite enhancing material special for high-performance concrete used for an intermediate-level radioactive waste concrete disposal container and a preparation method of the composite enhancing material. The composite enhancing material comprises the following components, by weight percentage, 40-60% of slag fine powder, 10-40% of coal ash, 15-30% of silica fume, and 1-2.5% of carbon fiber. Different additives develop different optimizing function on working performance, mechanical property and endurance capacity of high-strength concrete, and short carbon fiber can improve the cracking phenomenon of the high-strength concrete, so that a product meeting requirements of high cracking resistance and high durability of a disposal container concrete material is obtained. In an actual production process, a composite enhancing material special for manufacturing a concrete container is provided and is beneficial for metering control. The production cost is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete composite reinforcement material for a medium-level radioactive waste disposal container and a preparation method thereof, that is, a preparation method for a high-performance concrete composite reinforcement material for a medium-level radioactive waste concrete disposal container. Background technique [0002] With the vigorous development of my country's nuclear power industry, the generation of low- and medium-level radioactive waste continues to increase, and all nuclear power plants proposed, under construction, and in service will face the demand and pressure of a large amount of low- and medium-level radioactive waste intermediate storage in the plant for disposal. According to the requirements of GB11928-89 "Regulations on Temporary Storage of Low- and Medium-level Radioactive Solid Wastes", the temporary storage period in the waste plant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/14C04B18/08C04B14/38
CPCC04B40/0039C04B18/141C04B18/08C04B18/146C04B14/386Y02W30/91
Inventor 王琼翁明辉韩建军陈斌梁袁平於林锋樊俊江钱磊王鑫陆俊
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD
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