Chloride-Induced Steel Corrosion in Concrete Under Service Loads (eBook)

Hailong Ye, Chuanqing Fu, Ye Tian, Nanguo Jin (Autoren)

eBook Download: PDF

2020 | 1st ed. 2020
XXIV, 138 Seiten
Springer Singapore (Verlag)
978-981-15-4108-7 (ISBN)

Infos

This book summarizes the latest advances in understanding chloride ingress and steel corrosion in concrete under service loads. Unlike the existing literature, it focuses specifically on the effect of service loads on chloride-induced durability issues in reinforced concrete structures. It discusses how service loads affect the moisture and chloride penetration rate, corrosion kinetics and rust distribution, as well as the structural performance of concrete components (e.g. beams and columns) in a systematic and hierarchical way. Given its scope, the book is chiefly intended for researchers and industry practitioners in structural engineering, particularly those whose work involves the durability design of concrete structures.

Dr. Hailong Ye is an Assistant Professor in the Department of Civil Engineering at The University of Hong Kong. He obtained his B.Eng. (2010) in Civil Engineering from Southwest Jiaotong University, M.S. (2013) in Structural Engineering from Zhejiang University, and Ph.D. (2016) in Civil Engineering from The Pennsylvania State University.  He worked as a Postdoctoral Researcher and Marie Curie Fellow at Penn State and the University of Sheffield.

Dr. Chuanqing Fu is a Professor in the School of Civil and Architectural Engineering of the Zhejiang University of Technology. He obtained his Ph.D. from Zhejiang University in 2012 and has worked as a postdoc in the field of solid mechanics and material science for 6 years. He is currently the Young and Middle-aged Academic Leader in Zhejiang Province of China.

Dr. Ye Tian is an Associate Professor at Zhejiang University.

Dr. Nanguo Jin is a Professor at Zhejiang University.

Inhalt

Preface 5
Acknowledgments 7
Contents 8
Abbreviations 11
List of Figures 13
List of Tables 20
1 Introduction 22
1.1 Background 22
1.2 Marine Environment 22
1.3 Composition and Properties of Concrete 25
1.4 Supplementary Cementitious Materials 26
1.5 Pore Structure and Transport Properties of Concrete 27
1.6 Electrochemical Reaction of Chloride-Induced Corrosion 27
1.7 Content of This Book 28
References 29
2 Chloride Ingress in Stressed Concrete 31
2.1 Introduction 31
2.2 The Loading Effect Factor 32
2.2.1 Damage Influence Factor 32
2.2.2 Definition of the Damage Variable 33
2.2.3 Derivation of Loading Effect Factor 36
2.3 Effect of Flexural Loading on Chloride Ingress 38
2.3.1 Experimental Program 38
2.3.2 Influence of Flexural Load on Saturated Concrete 41
2.3.3 Influence of Flexural Load on Non-saturated Concrete 43
2.4 Fatigue Loads on Moisture Transport 44
2.4.1 Surface Factor 44
2.4.2 Damage Variable of Fatigue-Damaged Concrete 44
2.4.3 Experimental Programs 45
2.4.4 Moisture Transport in Surface Concrete 49
2.4.5 Influence Factors on the Surface Factor 51
2.4.6 Surface Mass Transfer Area 52
2.5 Fatigue Loads on Chloride Ingress 53
2.5.1 Experimental Program 53
2.5.2 Chloride Profiles in Fatigue-Damaged Concrete 55
2.5.3 Fatigue Loading Effect Factor 55
2.6 Conclusions 59
References 60
3 Chloride Ingress in Cracked Concrete 62
3.1 Introduction 62
3.2 Moisture Influential Depth 62
3.2.1 Experimental Program 62
3.2.2 Cyclic RH Change 65
3.2.3 Cyclic Temperature Change 67
3.2.4 Fog Environment 67
3.2.5 Rainfall Environment 67
3.3 Chloride Diffusion in Cracked Concrete in Saturated States 71
3.3.1 Experimental Program 71
3.3.2 Chloride Diffusion Coefficient 71
3.4 Chloride Penetration into Cracked Concrete Under Wet-Dry Cycles 73
3.4.1 Experimental Program 73
3.4.2 Chloride Profiles in Cracks 74
3.5 Conclusions 77
References 79
4 Influence of Environmental Condition on Chloride Ingress into Loaded Concrete 80
4.1 Introduction 80
4.2 Cyclic Wet-Dry Salt-Fog Environment 80
4.2.1 Experimental Program 80
4.2.2 Internal RH Evolution in Concrete Under Salt-Fog Environments 82
4.2.3 Influence of Exposure Duration on Chloride Profiles 87
4.2.4 Influence of Binder Type on Chloride Profiles 87
4.2.5 Influence of Exposure Orientation on Chloride Profiles 91
4.3 Cyclic Carbonation and Wet-Dry Condition 91
4.3.1 Experimental Program 91
4.3.2 Influence of Carbonation on Chloride Profiles 95
4.3.3 Influence of Sustained Loading 99
4.4 Interaction Between Carbonation and Chloride Attack 99
4.5 Conclusions 102
References 103
5 Corrosion Development in Concrete Beams Under Service Loads 104
5.1 Introduction 104
5.2 Experimental Program 104
5.3 Crack Mapping 108
5.4 Optical Microscopy Examination 110
5.4.1 3D Laser Scanning 110
5.5 EMPA 115
5.6 The Effect of Cover Thickness on Corrosion Characteristics 120
5.6.1 Experimental Program 120
5.6.2 Rust Distribution 123
5.6.3 Parameter Analysis 127
5.6.4 Correlation Between ? and Crack Width 128
5.7 Conclusions 131
References 132
6 Mechanical Degradation of Concrete Beams Corroded Under Service Loads 134
6.1 Introduction 134
6.2 Experimental Program 135
6.3 Cracking Map 138
6.4 Distribution of Mass Loss of Corroded Rebar 146
6.5 Loads-Deflection Responses 149
6.6 Conclusions 157
References 157

Produkt-Details

• Erscheint lt. Verlag: 27.3.2020
• Zusatzinfo: XXIV, 138 p. 166 illus., 129 illus. in color.
• Sprache: englisch
• Themenwelt: Technik ► Bauwesen
• Themenwelt: Technik ► Maschinenbau
• Schlagworte: Civil Engineering • Concrete materials • Steel Corrosion • Structural engineering • Sustainability of Concrete Structures
• ISBN-10: 981-15-4108-6 / 9811541086
• ISBN-13: 978-981-15-4108-7 / 9789811541087