Galvanic Cathodic Protection Explained - Christian Stone

Episode von Concretely von Johannes · 7. Oktober 2026 · 44 min

Zinc corrodes so rebar doesn't have to — but only if you design the system right. Christian Stone, Lead Material Scientist at CPT, breaks down galvanic and hybrid cathodic protection: why these systems dominate in the UK, US and Australia but barely exist in the DACH region, how the "halo effect" rescues patch repairs from future cracking, and why 20-year-old hybrid installations on the White Adder Bridge and a Thames pier have needed almost no maintenance. A deep technical conversation on zinc chemistry, polarization, and when impressed current still wins.

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