Remote monitoring of a rehabilitated concrete highway bridge - 5 years of results

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Conference2nd Material Specialty Conference of the Canadian Society for Civil Engineering: 05 June 2002, Montréal, Québec
Pages110; # of pages: 10
Subjectfield monitoring, corrosion sensors, highway bridge, corrosion inhibitors; Bridges
AbstractAs part of a major rehabilitation project, embedded instrumentation was installed in a concrete bridge barrier wall to remotely monitor the key physico-chemical parameters influenced by the prevailing environmental conditions. The remote monitoring was part of a broader experimental program, in which different rehabilitation techniques used in the reconstruction of a bridge barrier wall were evaluated in the field and in the laboratory. The barrier wall was instrumented in 1996 with over a hundred embedded sensors for the measurement of temperature, relative humidity, electrochemical potential and longitudinal strain. The data was collected on an hourly basis with 5 data loggers equipped with cellular modems for data transmission. The bridge structure located near Montreal (Quebec) has experienced typical Canadian temperature extremes from -25°C in the winter to +30°C in the summer, several wet-dry and freeze-thaw cycles, as well as severe restrained shrinkage cracking in the new barrier wall at early-age. The paper presents data obtained from five years of remote monitoring of a bridge under harsh climatic conditions. The full evaluation of the long-term performance of the rehabilitation techniques based on corrosion surveys and testing conducted on-site and in the laboratory will be part of a separate paper.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number45375
NPARC number20378732
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Record identifier500ab57c-b6c0-4889-aa72-b3fb547b79de
Record created2012-07-24
Record modified2016-05-09
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