Behavior of Composite Pavement for Heavy Duty Area
중하중 구역에서의 복합포장 거동
- 주제(키워드) 도움말 Composite Pavement , RCC , Horizontal Loading , Interfacial Bonding , FEA
- 발행기관 Gangneung-Wonju National University
- 지도교수 도움말 Lee Seung Woo
- 발행년도 2016
- 학위수여년월 2016. 8
- 학위명 석사
- 학과 및 전공 도움말 산업대학원 토목공학과
- 실제URI http://www.dcollection.net/handler/kangnung/000000008350
- 본문언어 영어
초록/요약 도움말
Asphalt or flexible pavements that are commonly constructed in heavy duty area such as port or container terminal usually expose the distresses such as cracking and rutting after experienced traffic or environmental loading. Due to these problems, perpetual pavements, firstly constructed in highway, is interested for heavy duty area because this pavement system can have a longer life and requires a minor repair or rehabilitation of asphalt surface during its service life. Materials below asphalt surface of perpetual pavement have similar characteristic to concrete (i.e. resistance of rutting and cracking). Additionally, Roller-Compacted Concrete (RCC) is nowadays a popular alternative for heavy duty area due to its benefits such as low shrinkage, strong bearing capacity and no joint construction. Therefore, it is reasonably to use RCC as a base layer beneath asphalt surface of perpetual pavement and this new structure can be called “RCC-Base Composite Pavement”. Typical distresses in composite pavement have noticed as reflective cracking, rutting, fatigue cracking and interface bonding failure. Due to no-joint construction, low shrinkage and strong aggregate interlock along cracks of RCC base, reflective cracking is negligible in this study. These distresses may represent the pavement performances and they may change due to variation of design factor such as thickness and modulus. Also, horizontal loading, created by vehicle braking or accelerating, is reported as a major cause of top-down cracking of surface and interfacial bonding failure in multi-layered pavement system. Thus, this study focuses on sensitive analysis of RCC-base composite pavement by investigating the effect of modulus and thickness on pavement performances such fatigue life and rut depth. Additionally, effect of horizontal loading on top-down cracking of asphalt surface and interface bonding behavior is discussed. Stresses and Strains, at critical location of pavement, are used as the input of transfer function to evaluate each performance and they are determined with wheel load of handling vehicle in port based on finite element method (FEM). Results of this study showed that RCC-base composite pavement can eliminate the bottom-up cracking and reduce significantly rut depth in asphalt surface. Moreover, rut depth may increase with thick asphalt surface. High modulus or high thickness of RCC base may reduce rut depth and extend the RCC fatigue life. Furthermore, in composite pavement, horizontal loading due to braking or accelerating vehicle can produce top-down cracking on asphalt surface and induce AC/RCC interfacial bonding failure.
more목차 도움말
ABSTRACT i
TABLE OF CONTENTS iii
LIST OF TABLES vii
LIST OF FIGURES viii
ACKNOWLEDGEMENT x
CHAPTER 1 INTRODUCTION
1.1 Research Background 1
1.2 Problem Statement 2
1.3 Research Objectives 3
1.4 Research Scope 3
1.5 Dissertation Outline 4
CHAPTER 2 LITERATURE REVIEW
2.1 Introduction 5
2.2 Typical Pavements for Heavy Duty Area 6
2.2.1 Asphalt Pavement 7
2.2.2 Concrete Pavement 8
2.3 Typical Loading in Heavy Duty Area 12
2.3.1 Handling Vehicle Types 12
2.3.2 Wheel Loading 17
2.4 Composite Pavement System 18
2.4.1 Benefits of Composite Pavements 19
2.4.2 Past Performance of Composite Pavement Systems 20
2.4.3 Composite Pavement Construction 21
2.5 Composite Pavement Performance Prediction 26
2.5.1 Fatigue Cracking of Asphalt Layer 28
2.5.2 Fatigue Cracking of RCC base Layer 29
2.5.3 Rutting in Asphalt Layer 29
2.6 Interfacial Bonding and Horizontal Loading Behavior 30
2.7 Summary of Literature Review 32
CHAPTER 3 SENSITIVE ANALYSIS OF COMPOSITE PAVEMENT
3.1 Introduction 33
3.2 Research Approach 33
3.2.1 Finite Element Model 33
3.2.2 Wheel loading 34
3.2.3 Thickness and Material Input Parameters 35
3.3 Results and Discussion 36
3.3.1 Comparison between Composite and Flexible Pavement 36
3.3.1.1 Fatigue Cracking of Asphalt Surface in Composite and Flexible Pavement 36
3.3.1.2 Rut Depth of Asphalt Surface in Composite and Flexible Pavement 37
3.3.1.3 Fatigue Cracking of RCC Base in Composite Pavement 41
3.3.2 Effect of Asphalt Thickness on Composite Pavement Performance 43
3.3.2.1 Effect of Asphalt Thickness on Rut Depth of Asphalt Surface 43
3.3.2.2 Effect of Asphalt Surface on Fatigue Life of RCC Base 47
3.3.3 Effect of RCC Base Thickness on Composite Pavement Performance 49
3.3.3.1 Effect of RCC Base Thickness on Rut Depth of Asphalt Surface 49
3.3.3.2 Fatigue Life of RCC Base 52
3.4 Summary of Sensitive Analysis of Composite Pavement 55
CHAPTER 4 EFFECT OF HORIZONTAL LOADING ON COMPOSITE PAVEMENT
4.1 Introduction 57
4.2 Research Approach 57
4.2.1 Finite Element Model 57
4.2.2 Wheel loading 58
4.2.3 Thickness and Material Input Parameters 59
4.3 Effect of Horizontal Loading on Composite Pavement Performances 60
4.3.1 Effect of Horizontal Loading on Top-Down Cracking of Asphalt Surface 61
4.3.2 Effect of Horizontal Loading on Asphalt-RCC Interface Bonding Behavior 62
4.4 Summary of Effect of Horizontal Loading on Composite Pavement 64
CHAPTER 5 FINDINGS AND CONCLUSIONS
5.1 Summary and Findings 65
5.2 Conclusions 67
5.3 Recommendations of the Study 67
5.4 Recommendations for Future Research 68
REFERENCES 70
APPENDIX Pavement Responses And Performance Prediction Calculation 73
