Integrated Buildings & Structures

Hi, I'm an academic in Civil Engineering, Architecture Urbanism. I'm looking for information on corrosion prevention, specifically using a “sacrificial system” or cathodic protection. I live in Brazil and am having difficulty accessing information. I’d like to know the amount of Zinc and perhaps other metals that should be used in the process. Additionally, I’d like to know how to determine the surface area needed to yield successful results?​

Search for corrosion engineering.  Look at zinc sacrificial systems.   One of our past projects dealt with 12" reinforced concrete slabs on top of salt laden sand fill.  There was no membrane installed between the sand and the bottom of the slabs.   The salt came up through the slab and corroded out the reinforcing steel.  In one house, we pulled up the rug and we could see the outline of the rust in the top at the slab surface.  I was told that some slabs crack horizontally the full width of slab.

Search on Eng-Tips.com and put corrosion in the search box at the top of the page.  I got 15,889 records concerning corrosion - apparentently starting as far back as 2006.   For steel structures, think galvanizing or using aluminum.


Been to Iquazu a few times.  I was a resident engineer in Asuncion on a World Bank project and the contractor was from Brazil and his equipment came across the bridge there.

Good luck.

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Neil Moore P.E., S.E., M.ASCE
President
Neil Moore & Assoc
Shingle Springs CA
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