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Rare-earth nuclear-radiation-proof mortar and preparation method of rare-earth nuclear-radiation-proof mortar

An anti-nuclear radiation and mortar technology is applied in the field of rare earth anti-nuclear radiation mortar and its preparation, which can solve the problems of uneven dispersion, stratification, segregation and sag of rare earth elements, poor neutron absorption effect, etc. Nuclear radiation, good nuclear radiation shielding performance, the effect of structural stability

Inactive Publication Date: 2016-06-08
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the content of rare earth elements added by this technology is low, and the high-density anti-nuclear radiation mortar is prone to delamination, segregation, and sag, which is unavoidable. The rare earth elements are unevenly dispersed, resulting in limited neutron dose attenuation. On the other hand , the composition is relatively small, and the effect of absorbing neutrons of different energies is not good

Method used

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  • Rare-earth nuclear-radiation-proof mortar and preparation method of rare-earth nuclear-radiation-proof mortar

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Effect test

Embodiment 1

[0039] A rare earth anti-nuclear radiation mortar is composed of Portland cement as a cementitious material, aggregate, rare earth element compound and admixture in a certain proportion. According to actual needs and construction environment, by adjusting the formula, the required performance can be obtained.

[0040] The mortar is composed of the following raw materials in percentage by weight:

[0041]

[0042] Prepare cement-based anti-nuclear radiation mortar according to the mass percentage specified above, add water with 13% of the total mass of raw materials and stir evenly before construction (add water first and then feed), and cure until the specified time (generally 28 days) to measure various properties.

Embodiment 2

[0044] A rare earth anti-nuclear radiation mortar is composed of Portland cement as a cementitious material, rare earth aggregate and admixture in a certain proportion. According to actual needs and construction environment, by adjusting the formula, the required performance can be obtained.

[0045] The mortar is composed of the following raw materials in percentage by weight:

[0046]

[0047]

[0048] Prepare cement-based anti-nuclear radiation mortar according to the mass percentage specified in the above table, add water with 12% of the total mass of raw materials and stir evenly before construction (add water first and then feed), maintain for the specified time, and measure various properties.

[0049] The mechanical properties and neutron ray shielding properties of the rare earth anti-nuclear radiation mortar prepared by the present invention are shown in Table 1 and Table 2 respectively, and the neutron detector is SIM-MAXN3010.

[0050] Table 1

[0051] ...

Embodiment 3

[0058] A rare earth anti-nuclear radiation mortar is composed of Portland cement as a cementitious material, aggregate, rare earth element compound and admixture in a certain proportion. According to actual needs and construction environment, by adjusting the formula, the required performance can be obtained.

[0059] The mortar is composed of the following raw materials in percentage by weight:

[0060]

[0061] Prepare cement-based anti-nuclear radiation mortar according to the mass percentage specified above, add water with 13% of the total mass of raw materials and stir evenly before construction (add water first and then feed), and measure various properties after curing for a specified time (generally 28 days). Neutron attenuation has a pronounced effect.

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Abstract

The invention relates to rare-earth nuclear-radiation-proof mortar. The rare-earth nuclear-radiation-proof mortar is prepared from the following components in percentage by weight: 24 percent to 28 percent of cement, 40 percent to 60 percent of aggregate, 10 percent to 30 percent of rare earth and 0.8 percent to 2.0 percent of an additive, wherein the rare-earth aggregate contains oxides, oxalates, carbonates or complexes of rare-earth elements including lanthanum, gadolinium, samarium, europium, or dysprosium and the like. Compared with the prior art, the rare-earth nuclear-radiation-proof mortar provided by the invention has good mechanical property, waterproof property and construction property, and has a good shielding effect on gamma and neutron rays.

Description

technical field [0001] The invention relates to the technical field of nuclear defense building materials, in particular to a rare-earth anti-nuclear radiation mortar and a preparation method thereof. Background technique [0002] Nuclear power generation is currently the most important form of peaceful use of nuclear energy. In the field of nuclear energy, the main concern is the possible health effects of ionizing radiation and their protection. Radiation exposure in nuclear energy applications comes from various radionuclides produced during the operation of nuclear energy generating devices (such as nuclear power plants). Under normal operating conditions, the radiation dose produced by nuclear power plants to the surrounding public is far lower than the natural background radiation level. In my country, the national nuclear safety regulations require that the annual radiation dose of nuclear power plants to the surrounding residents under normal operating conditions s...

Claims

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Application Information

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IPC IPC(8): C04B28/04G21F1/04
CPCC04B28/04C04B2111/00862G21F1/042C04B14/368C04B14/06C04B14/363C04B14/30C04B24/04C04B22/10C04B2103/302C04B2103/46C04B2103/0057C04B2103/50C04B14/323C04B24/24C04B24/2611C04B24/2623C04B24/2641C04B24/2676C04B24/26C04B24/2688C04B24/383C04B24/02C04B24/42C04B24/00C04B24/32C04B24/223
Inventor 余锡宾
Owner SHANGHAI NORMAL UNIVERSITY
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