Concrete Structural Designers Guide

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High Performance Concrete Structural Designers Guide

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Orientation 1

Acronyms 4

SECTION 1: OBJECTIVE AND SCOPE 7

SECTION 2: INTRODUCTION 9

SECTION 3: DEFINITION AND CHARACTERISTICS 11
3.1 Introduction 11
3.2 Definition 11
3.3 Material and Performance Characteristics 11
3.4 References 12

SECTION 4: RESEARCH 15
4.1 Introduction 15
4.2 Ultra High Performance Concrete (UHPC)
Research Program at FHWA 15
4.3 Rapid Migration Test 20
4.4 References 22

SECTION 5: STRUCTURAL DESIGN AND SPECIFICATIONS 23
FOR HIGH STRENGTH CONCRETE
5.1 Introduction 23
5.2 Cost Effective Designs 23
5.3 Material Properties 24
5.4 Flexure 29
5.5 Shear and torsion 32
5.6 Deformations, delineations, and Camber 32
5.7 References 32

SECTION 6: HIGH PERFORMANCE CONCRETE (HPC) MIX DESIGN AND PROPORTIONING 35
6.1 Introduction 35
6.2 Advantages of High Performance 35
Concrete in Highway Bridges 35
6.3 Mixture Proportioning I 37
6.4 Mixture Proportioning – Advanced Concepts 40
6.5 Selection of Materials Proportions 41
6.6 Specification Requirements for Strength 46
and Durability
6.7 Conclusion 47
6.8 References 47

SECTION 7: PRECAST/PRESTRESSED BEAM FABRICATION, TRANSPORTATION AND ERECTION 49
7.1 Introduction 49
7.2 Fabrication 49
7.3 Transportation and Erection 56
7.4 Bearings 58
7.5 References 58
SECTION 8: CAST-IN-PLACE CONSTRUCTION 59
8.1 Introduction 59
8.2 Preparation for C & P Construction 59
8.3 Batching & Mixing 62
8.4 Handling & Placement 63
8.5 Finishing 64
8.6 Curing 66
8.7 Conclusions 70
8.8 References 70

SECTION 9: BRIDGE INSTRUMENTATION 71
9.1 Introduction 71
9.2 Instrumentation Program 72
9.3 Examples 73
9.4 References 74

SECTION 10: COSTS 75
10.1 Introduction 75
10.2 Types of Cost Estimate 75
10.3 Life-Cycle Cost 78
10.4 Initial and Long-term Cost Savings 80
10.5 Preliminary Design and Cost Estimate 81
10.6 Final Plans, Specifications, and Cost Estimate 82
10.7 Cost Data from State HPC Projects 82
10.8 References 84

SECTION 11: CASE STUDIES AND LESSONS LEARNED 85
11.1 Introduction 85
11.2 Outline for Case Studies 85
11.3 Lessons Learned from HPC Projects 86
11.4 Project Listings 87
11.5 References 109

SECTION 12: ACKNOWLEDGEMENTS 111

APPENDIX A: SAMPLE RESEARCH STATEMENTS 113

APPENDIX B: LIFE CYCLE COST ANALYSIS 116

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