10120 Engineering the Rehabilitation of Reinforced Concrete Structures in Gas and Fuel Oil Distribution Docks of the Pacific Coast of Mexico

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Product Number: 51300-10120-SG

ISBN: 10120 2010 CP

Author: J. Canto, E. Maya, C. Andrade, L. de la Escalera, C. Knight, J. Ascencio, L. Martinez

Publication Date: 2010

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This work serves to report on the results of the corrosion evaluations produced by Mexico´s State owned Company initiative to rehabilitate the reinforced concrete structures in their facilities that are used to supply gas and fuel oil to important coastal regions of Mexico including Mazatlan and Salina Cruz. A general assessment is presented showing the concrete repair needs and corrosion prevention requirements for the steel reinforcement in concrete beams, slabs and piles of these structures. A diagnosis was performed employing different test methods including visual survey, sonic hammering, sclerometer concrete strength measurements, corrosion potential measurement, concrete electrical conductivity, and chloride penetration. The results of the study are discussed, as well as the recommendations in terms of repairs to be performed and protection to be used. The general recommendation delivered was to mitigate corrosion activity through cathodic protection for the reinforcing steel and protective coatings. The cathodic protection recommended was mainly embedded distributed and discrete sacrificial anodes.