| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To shield radiation by storing sludge or the like containing radioactive substances and separating the sludge or the like from living area over a long period without damaging the sludge or the like. <P>SOLUTION: A radiation shielding vessel is produced by radiation shielding mortar in which CNT obtained by removing protean carbons, etc. are removed is blended. A lead plate is arranged in the thick inside of the vessel. A third solution is prepared by mixing a first solution obtained by dissolving 6.19 g of ammonium chloride and 1.76 g of pentaerythritol into 100 mL of water and a second solution obtained by dissolving 1.75 g of dicyandiamide into 50 mL of water. After adding 0.02 g of propylene glycol, 5 g of CNT and 850 mL of water to the third solution and agitating the mixture, the mixture is filtered to obtain a CNT-dispersed solution from which protean carbon components are removed. After adding 1000 mL of the transparent CNT-dispersed solution is added to 60 kg of dry-mixing mortar obtained by mixing 15 kg of cement and 45 kg of sand, the mortar mixture is mixed to prepare the radiation shielding mortar and the radiation shielding mortar is molded. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
