Page 256 - Corrosion Engineering Principles and Practice
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230    C h a p t e r   7                                                                                       C o r r o s i o n   F a i l u r e s ,   F a c t o r s ,   a n d   C e l l s    231












                                                         Grade
                                                             Corrosion


                            Ground
                           copper rod


                                           Concrete






                      FIGURE 7.20  Schematic of the corrosion cells acting on an anchor support
                      with a ground connection. (Courtesy of Anchor Guard)

































                      FIGURE 7.21  Corrosion of a water main ductile iron adjacent to a copper
                      fitting. (Courtesy of Drinking Water Services, City of Ottawa)
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