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09218 Preliminary Results of Surface Resistivity Readings (Wenner Method) on Field Marine Substructures as a Mean to Assess Concrete Permeability

Picture for 09218 Preliminary Results of Surface Resistivity Readings (Wenner Method) on Field Marine Substructu
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Product Number: 51300-09218-SG
ISBN: 09218 2009 CP
Author: F. Presuel-Moreno, M. Paredes, Ivan R. Lasa and Andres M. Suarez
Publication Date: 2009
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Surface resistivity profiles as a function of elevation are being measured on recent and mature marine reinforced concrete substructures. In a later phase of the project the surface resistivity values measured will be correlated with chloride diffusion coefficients measured from the same structures. Previous lab work suggests that a good correlation exists on saturated concrete between these two parameters. The objective of this study is to assess whether a similar correlation can be obtained from field surface resistivity readings. Preliminary results suggest that a conditioning method needs to be applied on-site to approximate water saturation conditions at the elevations of interest.

Keywords: surface resistivity, concrete resistivity, finite element method, modeling
Surface resistivity profiles as a function of elevation are being measured on recent and mature marine reinforced concrete substructures. In a later phase of the project the surface resistivity values measured will be correlated with chloride diffusion coefficients measured from the same structures. Previous lab work suggests that a good correlation exists on saturated concrete between these two parameters. The objective of this study is to assess whether a similar correlation can be obtained from field surface resistivity readings. Preliminary results suggest that a conditioning method needs to be applied on-site to approximate water saturation conditions at the elevations of interest.

Keywords: surface resistivity, concrete resistivity, finite element method, modeling
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