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Effect of zinc and orthophosphate corrosion inhibitors on cement‐based pipes
Many water utilities add zinc orthophosphate to treated water to reduce corrosion of plumbing materials within their distribution systems. The significance of zinc as a corrosion inhibitor was examined in bench‐scale tests of concrete corrosion. In waters with low hardness and low alkalinity, zinc orthophosphate provided better corrosion inhibition for concrete or cement‐based pipes than either zinc or orthophosphate alone. Addition of orthophosphate alone was beneficial in reducing the amount of scaling in waters with high hardness and high alkalinity.
Effect of zinc and orthophosphate corrosion inhibitors on cement‐based pipes
Many water utilities add zinc orthophosphate to treated water to reduce corrosion of plumbing materials within their distribution systems. The significance of zinc as a corrosion inhibitor was examined in bench‐scale tests of concrete corrosion. In waters with low hardness and low alkalinity, zinc orthophosphate provided better corrosion inhibition for concrete or cement‐based pipes than either zinc or orthophosphate alone. Addition of orthophosphate alone was beneficial in reducing the amount of scaling in waters with high hardness and high alkalinity.
Effect of zinc and orthophosphate corrosion inhibitors on cement‐based pipes
Parks, Jeffrey L. (author) / Kashyap, Anusha (author) / Atassi, Amrou (author) / Schneider, Orren (author) / Edwards, Marc (author)
Journal ‐ American Water Works Association ; 104 ; E1-E14
2012-01-01
14 pages
Article (Journal)
Electronic Resource
English
orthophosphate , Distribution Systems , hardness , Inhibition , zinc , alkalinity , concrete degradation , Cement , pH , Corrosion , corrosion inhibitor , Pipes
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