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Method for solidifying radioactive waste resin cement

A radioactive waste resin and cement solidification technology, which is applied in radioactive purification, nuclear engineering, etc., can solve the problems of difficult cement solidification, easy cracks, high leaching rate, etc., and achieve the effect of improving impact resistance and preventing surface cracks

Active Publication Date: 2011-04-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Radioactive waste resin cement solidification usually has defects such as low resin holding capacity, high leaching rate, and easy cracks, so radioactive waste resin is one of the most difficult radioactive wastes to cement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the mass ratio of dura fiber: zeolite: cement: dehydrating resin: water = 1: 10: 1000: 400: 350 mixed evenly and then poured into the test mold for curing to obtain a cement solidified body. The 28-day compressive strength of the solidified body is 14MPa, and The strength is 3.5Mpa.

Embodiment 2

[0018] According to the mass ratio of dura fiber: zeolite: cement: dehydrating resin: water = 3: 10: 1000: 400: 350 mixed evenly and then poured into the test mold curing to obtain a cement solidified body. The strength is 3.7Mpa.

Embodiment 3

[0020] According to the mass ratio of dura fiber: zeolite: cement: dehydrating resin: water = 5: 10: 1000: 400: 350 mixed evenly and then poured into the trial mold curing to obtain a cement solidified body. The 28-day compressive strength of the solidified body is 14MPa. The strength is 4.1Mpa.

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Abstract

The invention discloses a method for solidifying radioactive waste resin cement, and belongs to the technical field of radioactive waste treatment. The method for solidifying the radioactive waste resin cement by a dura fiber comprises the following steps of: mixing the dura fiber, zeolite, cement, dehydrated radioactive waste resin and water uniformly, pouring the mixture into a test die and curing to obtain a cement solidified body. The dura fiber is 0.1 to 0.5 mass percent of a mixture of the zeolite and the cement; and the mass ratio of the cement to the dehydrated radioactive waste resin to the water is 1 to (0.3-0.5) to 0.35. The shock resistance of the obtained cement solidified body is enhanced obviously, the surface has no crack, and the performance indexes all meet the requirement of the national standard. The compression strength of the solidified body for 28 days is more than 11.5 MPa, and the breaking strength of the solidified body is more than 3.1 MPa.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to a method for solidifying radioactive waste resin cement. Background technique [0002] A large amount of radioactive waste resin will be produced in the operation and decommissioning procedures of nuclear power plants and nuclear facilities. The cement curing of radioactive waste is a method commonly used at home and abroad. Radioactive waste resin cement solidification usually has defects such as low resin holding capacity, high leaching rate, and easy cracks. Therefore, radioactive waste resin is one of the most difficult radioactive wastes to cement. Contents of the invention [0003] The object of the present invention is to provide a method for curing radioactive waste resin cement, and the radioactive waste resin cured by the method can meet the requirements of national standards. [0004] A method for solidifying radioactive waste resin c...

Claims

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Application Information

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IPC IPC(8): G21F9/28G21F9/30G21F9/34
Inventor 李俊峰王建龙
Owner TSINGHUA UNIV
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