An concrete container (10) includes a first and a second concrete (21,22). The first concrete (21) has a vessel shape with an outer surface and an inner surface. The second concrete (22) coats the outer surface of the first concrete (21). The first concrete (21) is more capable for shielding radiation than the secon...

Cement and water are into a form. Cement paste is made of the cement and the water. Then aggregates are put into the form to distribute the aggregates in the cement paste, to make fresh concrete in the form. Then the fresh concrete is solidified to make concrete in the form.