TY - BOOK AU - Cousins, Tommy & Others TI - High-performance/high-strength lightweight concrete for bridge girders and decks U1 - 388.132 PY - 2013/// CY - Washington, DC PB - Transportation Research Board N1 - CONTENTS 1 Summary 4 Chapter 1 Introduction 4 1.1 Background 4 1.2 Project Objectives and Scope 4 1.3 Research Plan and Methodology 5 1.4 Organization of the Project 6 Chapter 2 Findings 6 2.1 Materials Testing 7 2.2 Interface Shear Strength 8 2.3 Laboratory Beam Tests 8 2.4 Shear Tests 8 2.5 Time-Dependent Behavior of Lab-Cast and Full-Scale Beams 10 Chapter 3 Background and Research Approach 10 3.1 Mix Designs and Material Properties 23 3.2 Interface Shear Strength 33 3.3 Laboratory Beam Test Results and Analysis 40 3.4 Shear Performance of Full-Scale Beams 49 3.5 Time-Dependent Behavior of Lab-Cast and Full-Scale Beams 62 3.6 Design Examples 64 Chapter 4 Interpretation, Appraisal, and Application 65 Chapter 5 Conclusions and Suggested Research 65 5.1 Material Properties 65 5.2 Interface Shear Strength 65 5.3 Shear Tests 66 5.4 Transfer and Development Length Testing 66 5.5 Time-Dependent Behavior 66 5.6 Design Examples and Parametric Studies 66 5.7 Recommendations for Future Research 68 References 69 A Proposed Changes to AASHTO LRFD Bridge Design Specifications 80 Attachment B Proposed Changes to AASHTO LRFD Bridge ER -