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OCR for page 48
38
If Other, please describe briefly.
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20. What defects has your agency observed in the performance of waterproofing membranes on existing concrete bridge decks?
YesNo
Lack of adhesion between the waterproofing membrane and the concrete deck
Lack of adhesion between the waterproofing membrane and the asphalt surface
Punctured waterproofing membranes
Membrane blistering
Horizontal shear failure at the membrane
Cracks in the waterproofing membrane
Voids under the waterproofing membrane
Reinforcement corrosion
Moisture penetration through the membrane but cause unknown
Other
If Other, please describe briefly.
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10. REPAIRS
21. If your agency has requirements or specifications for repair of membrane systems, please provide details. This information may be
submitted in the box below as a written description or link(s) to document(s).
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or upload as a file (up to 1MB per file). Additional files may be uploaded in Question 25.
11. RESEARCH
22. Has your agency used any non-destructive testing to assess the condition of the in-place waterproofing membranes?
( ) Yes
( ) No
If Yes, what method was used? This information may be submitted in the box below as a written description or link(s) to document(s).
____________________________________________________________________
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or upload as a file (up to 1MB per file). Additional files may be uploaded in Question 25.
Was the method reliable?
( ) Yes
( ) No
