| 摘要 |
<P>PROBLEM TO BE SOLVED: To dispose soil contaminated with radioactive materials and radioactive wastes existing in large quantity in a state in which radiation is shielded. <P>SOLUTION: A method for disposing soil, sludge or incineration ash contaminated with radioactive materials, includes: adding cement to soil contaminated with the radioactive materials, sludge subjected to sewage treatment containing the radioactive materials or garbage incineration ash to mix them; injecting mist water required for hydration reaction of the cement to the soil, the sludge or the incineration ash; putting the soil, the sludge or the incineration ash into a mold formed in a prescribed size, giving vibrations and pressure and curing the cement to form a contaminated soil mold block 1; covering the contaminated soil mold block with a coating material 2 for shielding radiation; and burying the contaminated soil mold block covered with the coating material into the ground. The coating material having a metal shield layer 11 having a radiation shielding property, and a buffer layer 12 made of flexible asphalt-based material, is pressed to the contaminated soil mold block and adhered to the contaminated soil mold block by adhesive force of the asphalt-based material. <P>COPYRIGHT: (C)2013,JPO&INPIT |
