Linked Data Explorerhttp://worldcat.org/entity/work/id/474748033
In situ determination of the chloride content of portland cement concrete bridge decks final report
The objective of this two-phase program is to develop an instrument and test procedure for rapid, local, in situ determination of chloride content in PCC bridge decks or other reinforced concrete members at the level of the outermost mat of reinforcing steel. In this phase the prototype instrument, a self-contained vehicle, has been developed and has undergone laboratory evaluation and field trials. Laboratory chloride determinations, made on over 100 concrete test specimens show insensitivity to water/cement ratio; moisture content; reinforcing bar location and pattern; aggregate type, and presence of overlays or membranes (unless they contain PVC). "Depth" chloride content can be measured irrespective of moderate variations in "surface" chloride content, with detection limits of 10 to 200 ppm C1 and depth "resolutions" of 1 to 20 cm, depending on the calibration model. Field trials were conducted on 5 bridges in Texas. They confirmed that up to six non-destructive chloride measurements per hour can be made with enough sensitivity to permit on-the-spot decisions regarding bridge deck repair or maintenance.
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http://schema.org/about
- http://id.loc.gov/authorities/subjects/sh85016870
- http://id.loc.gov/authorities/subjects/sh85030662
- http://id.worldcat.org/fast/858086
- http://experiment.worldcat.org/entity/work/data/474748033#Topic/bridge_decks
- http://experiment.worldcat.org/entity/work/data/474748033#Topic/nondestructive_tests
- http://id.worldcat.org/fast/874160
- http://id.loc.gov/authorities/subjects/sh85024536
- http://experiment.worldcat.org/entity/work/data/474748033#Topic/neutron_activation_analysis
- http://experiment.worldcat.org/entity/work/data/474748033#Topic/portland_cement_concrete
- http://id.worldcat.org/fast/1715659
http://schema.org/description
- "The objective of this two-phase program is to develop an instrument and test procedure for rapid, local, in situ determination of chloride content in PCC bridge decks or other reinforced concrete members at the level of the outermost mat of reinforcing steel. In this phase the prototype instrument, a self-contained vehicle, has been developed and has undergone laboratory evaluation and field trials. Laboratory chloride determinations, made on over 100 concrete test specimens show insensitivity to water/cement ratio; moisture content; reinforcing bar location and pattern; aggregate type, and presence of overlays or membranes (unless they contain PVC). "Depth" chloride content can be measured irrespective of moderate variations in "surface" chloride content, with detection limits of 10 to 200 ppm C1 and depth "resolutions" of 1 to 20 cm, depending on the calibration model. Field trials were conducted on 5 bridges in Texas. They confirmed that up to six non-destructive chloride measurements per hour can be made with enough sensitivity to permit on-the-spot decisions regarding bridge deck repair or maintenance."@en