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02207 INSPECTING A HALF-CENTURY CONCRETE PIER MADE WITH STARLESS STEEL REINFORCEMENT IN MEXICO

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Product Number: 51300-02207-SG
ISBN: 02207 2002 CP
Author: Pedro Castro-Borges, Oladis Troconis-Rincon, Eric I. Moreno, Andres Antonio Torres-Acosta, and Migue
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A 60-year old reinforced concrete pier, constructed with stainless steel reinforcing bars (rebars), and exposed to a tropical marine environment, has shown good performance during its service life. Visual inspection has shown no deterioration symptoms on sub- and super-structures, while recent marine structures (adjacent or close to this pier), constructed in the past three decades, have been deteriorated significantly due to severe corrosion of the embedded carbon steel presenting a lot of concrete delamination. A preliminary study has been performed in order to find the reasons why this pier has performed satisfactory in more than 60 years. The paper describes the tests performed to the pier, which included chloride content and concrete resistivity as well as electrochemical measurements to the stainless steel rebar. Brief discussion about durability issues on this pier, based on the obtained results, is given in this paper. Keywords: Carbonation, chloride, concrete, resistivity, stainless steel, visual inspection corrosion, cracking, marine environment, pier
A 60-year old reinforced concrete pier, constructed with stainless steel reinforcing bars (rebars), and exposed to a tropical marine environment, has shown good performance during its service life. Visual inspection has shown no deterioration symptoms on sub- and super-structures, while recent marine structures (adjacent or close to this pier), constructed in the past three decades, have been deteriorated significantly due to severe corrosion of the embedded carbon steel presenting a lot of concrete delamination. A preliminary study has been performed in order to find the reasons why this pier has performed satisfactory in more than 60 years. The paper describes the tests performed to the pier, which included chloride content and concrete resistivity as well as electrochemical measurements to the stainless steel rebar. Brief discussion about durability issues on this pier, based on the obtained results, is given in this paper. Keywords: Carbonation, chloride, concrete, resistivity, stainless steel, visual inspection corrosion, cracking, marine environment, pier
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