| 摘要 |
<p>A method of preventing the deterioration of concrete, mortar, or polymeric material, in which nickel, nickel oxide, Raney nickel, stabilized nickel, tin, tin oxide, cobalt oxide, stainless steel, or a metal comprising a mixture of these metals is contained in said concrete, mortar, or polymeric material. Concrete, mortar, or polymeric material that is particularly used for sewage disposal facilities, can be prevented from deterioration when such metals as above are contained.</p> |
