Copyright
IIT Kharagpur
C O N T E N T S
Title Page
Title page Declaration
Certificate of Approval Certificate
Dedication
Acknowledgement
List of Symbols and Abbreviations Abstract
Contents
i iii
v vii
ix xi xiii xvii
xix Chapter 1 Introduction
1.1 Background
1.2 Objective of the Present Thesis 1.3 Structure of the Present Thesis 1.4 Summary
1 4 4 6 Chapter 2 Review of Literature
2.1 Introduction
2.2 Physical Properties of Recycled Aggregates 2.3 Mechanical Properties of Recycled Aggregates 2.4 Characteristics of Recycled Aggregate Concrete (RAC)
2.5 Structural Behaviour of RAC 2.6 Current World Scenario 2.7 Indian Scenario
2.8 Critical Observations 2.9 Scope of the Present Work 2.10 Summary
7 8 13 15 32 34 44 46 49 50 Chapter 3 Experimental Study
3.1 Introduction
3.2 Production of Recycled Coarse Aggregate 3.3 Characterisation of Materials
3.4 Production of Normal and Recycled Aggregate Concrete 3.5 Properties of Concrete
3.6 Summary
51 51 54 59 61 67
Copyright
IIT Kharagpur
Contents
xx
Chapter 4 Characterisation of Aggregates and Concrete 4.1 Introduction
4.2 Characterisation of Aggregates 4.2.1 Physical characteristics 4.2.2 Mechanical characteristics
4.3 Properties of Recycled Aggregate Concrete 4.3.1 Fresh concrete
4.3.2 Hardened concrete 4.3.3 Durability of concrete
4.3.4 Non-destructive testing of concrete 4.4 Summary
69 69 70 76 77 77 78 102 109 112 Chapter 5 Microstructure of Recycled Aggregate Concrete
5.1 Introduction
5.2 Experimental Details
5.2.1 Sample preparation for microscopic study 5.2.2 Scanning electron microscope
5.2.3 Image acquisition 5.2.4 Image analysis
5.2.5 Vickers microhardness (HV) 5.3 Results and Discussion
5.3.1 Characteristics of interfacial transition zone (ITZ) 5.3.2 Compressive strength – porosity relationship 5.3.3 Microhardness of ITZ
5.3.4 Compressive strength – ITZ microhardness relationship 5.4 Summary
113 115 115 116 116 117 123 124 124 138 139 142 143 Chapter 6 Behaviour of RAC Beams under Impact Load
6.1 Introduction
6.2 Experimental Details 6.2.1 Materials
6.2.2 Mix proportioning of RAC 6.2.3 Test specimens
6.2.4 Instrumented drop hammer impact test setup and devices
145 145 145 146 146 146
Copyright
IIT Kharagpur
Contents
xxi 6.3 Results and Discussion
6.3.1 Properties of recycled coarse aggregates (RCA) 6.3.2 Properties of recycled aggregate concrete (RAC) 6.3.3 Impact test results
6.4 Summary
149 149 150 151 165 Chapter 7 Conclusions and Future Scope of the Work
References Appendix A Appendix B
7.1 Conclusions
7.2 Contributions Made by the Author 7.3 Future Scope of the Work
Additional Review of Literature
Additional Results of Microstructure of Concrete
167 169 169 171 181 189
