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38 If Other, please describe briefly. ____________________________________________________________________ ____________________________________________________________________ 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. ____________________________________________________________________ ____________________________________________________________________ 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). ____________________________________________________________________ ____________________________________________________________________ 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). ____________________________________________________________________ ____________________________________________________________________ or upload as a file (up to 1MB per file). Additional files may be uploaded in Question 25. Was the method reliable? ( ) Yes ( ) No