Steel fiber concrete high overall container used for disposal of radioactive substance and its preparation method

A technology of steel fiber concrete and radioactive substances, which is applied in the field of steel fiber concrete high-integral containers for radioactive substance disposal and its preparation, which can solve the problems of unreachable, short service life, and inability to carry out safety monitoring, and achieve the effect of saving processing costs

Active Publication Date: 2014-07-16
CHINA BUILDING MATERIALS ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing containers for storing radioactive substances cannot meet the above requirements.
[0003] Traditional nuclear waste containment and disposal technologies are often based on the principle of "multiple barriers", using steel structures or reinforced concrete structures and their composite structures as "buffer materials" to shield the radioactivity of nuclear waste, and then using deep burial for disposal. Therefore, this process has fatal defects such as too large disposal unit and unable to carry out safety monitoring, and the traditional nuclear waste concrete or fiber-reinforced concrete container has defects such as insufficient toughness and short service life

Method used

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  • Steel fiber concrete high overall container used for disposal of radioactive substance and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0030] The steel fiber concrete high-integral container for radioactive material disposal is made of concrete poured from the following materials, including 360kg of cement, 25kg of silica fume, 190kg of slag, 45kg of fly ash, 150kg of water, 574kg of sand, 1067kg of gravel, and copper-plated steel Fiber 101kg, water reducer 13.8kg. The corresponding mass of the steel fiber can be converted according to the determined incorporation volume and the known density.

[0031] Put the raw materials of any one of the above-mentioned steel fiber concrete high-integral containers for radioactive material disposal in the molding room at 20°C one day in advance; Dry mix in the mixer for 1-2 minutes, add water and wet mix for 3 minutes, the total mixing time is controlled within 6 minutes, and then cast and form; Curing is carried out under the conditions of temperature 20°C±2°C and relative humidity above 95%RH.

[0032] The particle size distribution of the stones is 5mm-10mm and 10mm-2...

Embodiment 2

[0042] The difference between this embodiment and the first embodiment lies in the change of raw materials. Among them, 360kg of cement, 45kg of silica fume, 165kg of slag, 30kg of fly ash, 138kg of water, 574kg of sand, 1067kg of stone, 117kg of hook steel fiber, and 12kg of water reducing agent.

Embodiment 3

[0044] The difference between this embodiment and the first embodiment lies in the change of raw materials. Among them, 360kg of cement, 30kg of silica fume, 190kg of slag, 20kg of fly ash, 168kg of water, 574kg of sand, 1067kg of gravel, 93.6kg of steel fiber, double-mixed with copper-plated steel fiber and hook steel fiber, and 15kg of water reducing agent.

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Abstract

The invention discloses a steel fiber concrete high overall container used for disposal of radioactive substance and its preparation method. The steel fiber concrete high overall container comprises a main body and a cover poured by concrete doping with a water reducer and steel fiber, the concrete is composed of a gel material, aggregate and water, by metering the concentration of concrete according to 2400kg / m<3>, a gelling material in each cubic meter of concrete is 550-600kg; the gelling material comprises the following raw materials by mass percentage: 46-76% of cement, 2.7-7.7% of silicon ash, 22-39% of slag and 2.7-7.7% of fly ash; the mass ratio of water to the gelling material is 0.23-0.28: 1; the aggregate is composed of sand and cobblestone, the sand rate is 33-38%; the doping amount of the water reducer accounts for 1.5-2.5% of total mass of the gelling material; and the doping amount of steel fiber accounts for 0.5-1.6% of total volume of the concrete. The steel fiber concrete high overall container used for disposal of radioactive substance and its preparation method can realize the surface treatment of nuclear waste and can reduce the treatment cost.

Description

technical field [0001] The invention relates to the technical field of nuclear waste treatment, in particular to a steel fiber concrete high-integral container for radioactive material disposal that realizes surface or semi-underground treatment of nuclear waste and other radioactive materials and a preparation method thereof. Background technique [0002] It is an important policy of my country's energy construction to actively develop nuclear energy and promote the construction of nuclear power projects. During the "Twelfth Five-Year Plan" period, my country's nuclear power engineering construction has entered a period of rapid development, and 3 to 5 new nuclear power plants will start construction each year. For my country's nuclear power construction, nuclear waste disposal technology is crucial. Radioactive substances such as nuclear waste will seriously pollute the environment. Improper disposal will not only cause irreparable damage to the environment, but also caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08C04B14/48
Inventor 姚燕吴浩王玲张萍张志银蔡挺松赵文浩
Owner CHINA BUILDING MATERIALS ACAD
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