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Diagnostic Survey Division Site based diagnostic testing
- Depth of Carbonation
- Chloride/Sulphate Profiles
- Cover meter survey
- Defect Quantification
- Remedial Strategies
- Specifications
- Budgets
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Diagnostic Investigation and repair techniques
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Motivation for Concrete Repairs
Why Repair a Structure?
- Make it Safe
- Restore Structural Integrity
- Extend the Service Life
- Change of Use
- Improve the Appearance
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How do you fix it ?
Three Phases:
- Phase 1 – Diagnostic Survey
- Phase 2 – Formulate a remedial
strategy utilising appropriate repair techniques
- Phase 3 - Implementation
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Get it right first time…
- Diagnostic survey
- You can not prescribe the medicine
if you do not know what is making you sick!
Incorrect repair methods can accelerate corrosion!
- Find:
- The cause
- The severity
- The extent
- The likely cost
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Diagnostic Survey
- With the information gleaned from the diagnostic survey, the client can then:
- Fully understand the severity and scale of the problem
- Prescribe the appropriate repair strategy
- Accurately budget for the works
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Diagnostic Instruments
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Cover Meter
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Schmidt Hammer
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Crack Measurement
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Ultra Sound - detects the presence of voids and cracks
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4 Point Wenner Probe Measures resistivity. Used to interpret rate of corrosion
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Ultra sound testing equipment
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