CONTENTS Rehabilitation Strategies, by Robert G. Tracy and Russell S. Fling 3 The Condition survey, by William F. Perenchio 8 Condition Survey of Prestressed Concrete Bridges, by Vladimir Novokshchenov 12 Underwater Inspections, by William L. Allen 21 Detecting Delaminations in Concrete slabs with and without Overlays Using the Impact-Echo Methid, by Mary Sansalone and Nicholas J. Carino 25 Recognizing and Evaluating concrete defect : Two case Histories, by Keith A. Pashina and Brian J.Pashina 35 Selection Criteria for concrete Repair Materials, by Edward M. Rizzo and Martin B. Sobelman 41 Surface Preparation for Adhesives, by Myles A. Murray 45 Evaluation of Cold-Weather Concrete Patching Materials, by Shivaprasad Kudlapur, Ariel Hanaor, P.N. Balaguru and Edward G. Nawy 48 Demolition and Reuse of concrete and Masonary, by Yoshio Kasai and Tadayoshi Fujii 58 Diamond Wire Cutting of concrete, by Robert M. Hulick and Timothy R. Beckman 63 Catholic Protection for Viaduct, by Barry L. Martin and William A. Kovatch 67 Historic Lighthouse Rehabbed, by Michael Johannes Paul 71 Forest Hill Station - A Hole in the Wall, by Peter C. Revelli and Peter E. Bank77 Grain- Storage Tank For Zaire West Africa, by German Gurfinkel 82