| 摘要 |
<p>A method of inhibiting corrosion of iron or steel reinforcement members, present in a concrete structure, comprises incorporating into the concrete slurry from which the concrete structure is to be formed, a corrosion inhibiting amount of a phosphonic acid corrosion inhibitor. In another embodiment, an existing reinforced concrete structure is repaired by pouring a cement slurry containing a phosphonic acid corrosion inhibitor on top of the structure and allowing the inhibitor to migrate through the structure into contact with the reinforcing members. Preferred phosphonic acid corrosion inhibitors contain a hydroxy or amino group e.g. 2-hydroxy phosphonoacetic acid.</p> |
