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CONTENTS 1 SUMMARY 3 CHAPTER ONE INTRODUCTION Background, 3 Scope, 3 Major Definitions, 3 Methodology for Obtaining Information, 4 Report Organization, 4 6 CHAPTER TWO LITERATURE FINDINGS AND SPECIFICATIONS Uses of Thin Polymer Overlays, 6 Pre-Overlay Evaluation, 6 Repairs, 7 Materials Used in Overlays, 7 Installation, 7 Quality Control Tests, 10 Test Methods, 11 Thin Polymer Overlay Field Sections, 11 Failures, 19 Stresses in Overlays, 20 Special Applications, 21 Service Life, 24 Warranties, 24 Relative Cost, 24 Specifications, 24 26 CHAPTER THREE PERFORMANCE OF OVERLAYS FROM SURVEYS AND INTERVIEWS Scope of Surveys, 26 General Responses, 26 Overlay Cost, 26 Causes of Failures, 26 Specifications, 29 Materials, 30 Contractor Interviews, 30 Material Supplier Interviews, 31 32 CHAPTER FOUR PROVEN PRACTICES Candidates for Overlays, 32 Overlay Types, 32 Materials, 32 Aggregates, 33 Qualification of Substrate, 34 Installation Methods, 36 39 CHAPTER FIVE REPAIR
40 CHAPTER SIX CONCLUSIONS Research Needs, 40 41 REFERENCES 43 BIBLIOGRAPHY 47 GLOSSARY OF TERMS 49 APPENDIX A QUESTIONNAIRES 59 APPENDIX B STRESSES IN OVERLAYS 61 APPENDIX C WARRANTY AND PAYMENT BOND
