Introduction

The installation of strain gages for concrete structures presents several unique challenges to the installer, whether measurements are made on the concrete surface or on reinforcement bars within the structure. Special preparation is required to ensure that strains on the irregular surface are fully transmitted to the strain gage. When gages are bonded to reinforcement bars, provisions are necessary to protect the installation from mechanical damage during fabrication and from the hostile environment of the concrete itself. This publication outlines recommendations for gage, leadwire and protective coating selections and installations under these conditions. The surface preparation materials and installation accessories referenced throughout are described in detail in Micro-Measurements Catalog A-110, M-LINE Strain Gage Accessories .

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