Method for increasing irradiation stability of cement solidified body for radioactive spent resin

A technology for solidifying radioactive waste resin and cement, which is applied in radioactive purification, nuclear engineering, etc., can solve problems affecting the stability of solidified bodies, resin decomposition, etc., and achieve the effect of improving radiation stability and preventing cracking

Inactive Publication Date: 2011-09-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prolonged irradiation will cause the resin in the cement cured body to decompose, thus affecting the stability of the cured body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Mix 42.5MPa ordinary Portland cement, zeolite powder, hair, dehydrating resin and water according to the following mass ratio 1:0.05:0.005:0.45:0.3. 6 Gy radiation exposure, the loss of compressive strength of the cured body is less than 20%, and the cured body does not appear cracks.

Embodiment 2

[0016] Mix 42.5MPa ordinary Portland cement, zeolite powder, hair, dehydrating resin and water according to the following mass ratio: 1:0.10:0.005:0.45:0.3. 6 Gy radiation exposure, the loss of compressive strength of the cured body is less than 20%, and the cured body does not appear cracks.

Embodiment 3

[0018] Mix 42.5MPa ordinary Portland cement, zeolite powder, hair, dehydrating resin and water according to the following mass ratio 1:0.05:0.010:0.45:0.3. 6 Gy radiation exposure, the loss of compressive strength of the cured body is less than 20%, and the cured body does not appear cracks.

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PUM

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Abstract

The invention discloses a method for increasing the irradiation stability of a cement solidified body for radioactive spent resin, which belongs to the technical field of radioactive waste treatment. The method comprises the step: the irradiation stability of the solidified body is increased by adding hairs to a resin cement solidification recipe. The addition amount of the hairs is determined according to the following preferential proportion: the mass ratio of the hairs to cement is (0.005-0.01):1. The length of the added hairs can be in the range of 1.5 to 2cm. The preferential resin cement solidification recipe comprises the following components in a mass ratio: zeolite powder, dehydrated radioactive spent resin, water and the cement, wherein the mass ratio of the components is (0.05-0.1):0.45:0.3:1. In the invention, solidified body cracking caused by resin irradiation decomposition can be prevented by adopting the method of adding the hairs to the resin cement solidification recipe, thus, the irradiation stability of the solidified body is increased.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, in particular to a method for increasing the irradiation stability of radioactive waste resin cement solidified body. Background technique [0002] During the operation and decommissioning of nuclear power plants and nuclear facilities, a large amount of radioactive waste resin will be produced. The efficient treatment of radioactive waste resin is one of the problems that have plagued the development of my country's nuclear industry for a long time. Cement solidification is a commonly used method for domestic radioactive waste resin disposal. When radioactive waste resin is solidified by cement, it needs to be stored for 300-500 years to isolate it from the environment. Long-term irradiation will cause the resin in the cement cured body to decompose, thereby affecting the stability of the cured body. [0003] The invention avoids the structural damage of the cured body caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/28G21F9/30G21F9/34
Inventor 李俊峰王建龙
Owner TSINGHUA UNIV
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