| 摘要 |
<p>Humectants are applied to cathodic protection systems which utilize a conductive paint anode or thermally-sprayed zinc or zinc alloy anodes applied to the surface of reinforced concrete structures. The humectants are deliquescent or hygroscopic organic or inorganic salts, hydrophilic polymers or colloids, or organic liquid desiccants. The humectants are positioned at or near the interface between the anodes and the concrete in a free flowing form and increase the moisture content at the interface. This increases the ability of the anode to deliver cathodic protection current to steel embedded in the concrete. The humectants may be applied to the concrete surface prior to application of the anode, or may be applied subsequent to installation of the anode. In an embodiment of the invention, the humectant is a lithium salt. The initiation of current delivery in the system results in the injection of lithium ions into the concrete which mitigates what is known as an alkali-silica reaction in the concrete.</p> |
