TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 500: Control of Concrete Cracking in Bridges provides information on methods used to control concrete cracking in bridge superstructures and substructures, and on the influence of cracking on long-term durability. Cracking of concrete in bridges continues to be a concern for bridge owners, particularly with bridge decks exposed to severe environments. The control of cracking for aesthetic, durability, and structural reasons becomes increasingly important as service-life goals are extended and higher-strength concrete, higher-strength reinforcement, and different types of reinforcement are used in bridge construction.
Table of Contents
|Chapter One - Introduction||3-4|
|Chapter Two - Types and Causes of Concrete Cracking in Bridges||5-30|
|Chapter Three - Effects of Concrete Constituent Materials on Cracking||31-39|
|Chapter Four - Effects of Construction Practices on Cracking||40-43|
|Chapter Five - Effects of Reinforcement Type on Crack Control||44-53|
|Chapter Six - Influence of Cracking on Long-Term Bridge Performance||54-60|
|Chapter Seven - Case Examples||61-67|
|Chapter Eight - Conclusions and Suggestions for Future Research||68-71|
|Appendix A - Survey Questionnaire||83-87|
|Appendix B - Summary of Responses to Survey Questionnaire||88-100|
|Appendix C - Cross Reference Table for AASHTO LRFD Bridge Design Specifications||101-101|
|Appendix D - Research Problem Statement||102-106|
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