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For ORTHOTROPIC STEEL BRIDGE DECKS ChemCo Systems 为何环氧沥青铺装技术 能够在中国成功? 正交异性钢桥面鋪裝工程

Epoxy Asphalt Success in China on Long Span Bridges

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Epoxy Asphalt paving for long span bridges in China has been in use since 2000. ChemCo Systems Epoxy Asphalt has shown to be the most durable pavement on orthotropic steel decks which are typical design elements of long span bridges.

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  • 1. For ORTHOTROPIC STEEL BRIDGE DECKS ChemCo Systems

2. NORTHERN EUROPE 1950 1950 NORTH AMERICA 1964 1964 ASIA 1979 1979 3. Paved with EA in 1967 1967 Excellent condition after 46 Years 46 4. RUT/SHOVE/ CRACK DELAMINATE 5. Most Severe in Hot Weather Most Frequent = Cracks Over LongitudinalStiffeners Cracks Lead to Dis-Bonding 6. TENSION STIFFENER 7. 2nd NANJING YANGTZE BRIDGESOUTHEAST UNIVERSITYT Y LIN INTERNATIONAL 8. 30+ Bridges Over 600,000 m of Deck 2010 3060 9. Pavement condition after 11 Years 11 10. Two-Component Polymer system 1st Component (Part A) = Epoxy Resin A= 2nd Component (Part B) = Hardener & Asphalt B = With Aggregate = Epoxy Asphalt Concrete = 11. A stable and durable 2-Phase Polymer System Hardener/Epoxy = Continuous Phase = Asphalts = Discontinuous Phase = Hardener/Epoxy Predominates 12. Asphalt, SMA, Gussasphalt are Thermoplastics.Will Melt ! (SMA)(Gussasphalt) Epoxy Asphalt is Thermoset. Will Not Melt ! 13. Epoxy Asphalt has: Higher Strength/Stability Better Stiffness over Temperature Range Better Resistance to Creep/Flow Better Adhesion 14. Higher Strength/Stability Greater than Four Times Stability of AsphaltConcrete4 Withstands Higher Overloads without Damage Does Not Rut or Shove 15. Flexural FlexuralStrength Modulus MPa MPaModified Asphalt 5.95 563SMA 4.73 355Epoxy Asphalt 16.42574 HUANG Wei, QIAN Zhendong, CHEN Gang & YANG JunChinese Science Bulletin 2003 Vol. 48 No. 21 23912394 16. TransitionLayerSurfaceLayer Depth mm mm25mmEpoxyAsphalt25mmEpoxyAsphalt 0.3225 mm 25 mm2025mmGussasphalt 3540mmEpoxyAsphalt 0.342025 mm 3540 mm25mmEpoxyAsphalt3040 mm SMA 0.7425 mm 3040 mm SMA 30mmSMA35mmSMA1.0530 mmSMA35 mmSMA 2030mmGussasphalt 3540mm SMA 1.742030 mm 3540mm SMA 30mmGussasphalt40mmGussasphalt3.5830 mm40 mm Li Xuelian, Zhou Zhigang, Key Laboratory of Highway Engineering, Changsha University of Science & Technology 17. Better Stiffness Less Softening as Temperature Increases Reduces Deflection of Deck Increases Fatigue Life of Steel Deck System 18. BETTER RESISTANCE TO CREEP/FLOW Much More Elastomeric Better Fatigue Life No Permanent Deformation under High Loads Reduced Damage by Slow Moving or Stopped Overloaded Trucks 19. At Service Temperature Extremes AtExpectedOverloads 20. Type V Standard Epoxy AsphaltV 12 mm Plate with 300 mm Wide Stiffeners on 600 mmCenters12mm300mm600mm Conducted at 0, 18, 60 deg C01860 10 Hz Frequency10 Normal Load & Overload NO FAILURE @12 Million Cycles 21. Type IX New Generation Epoxy AsphaltIX 12 mm Plate with 300 mm Wide Stiffeners on 600 mmCenters12mm300mm600mm Conducted at 21 deg C21 10 Hz Frequency10 Normal Load & Overload NO FAILURE @ >22 Million Cycles 22. FATIGUELIFE ConstantStrain - 23. ChemCo Bond Coat Type 1fPull-Off Adhesion 2.4 MPa @ 70 CNegligible slippage at bond line assures composite actionNo Delamination1f70 2.4 24. 2525 25. PROPORTIONS THE TWOBINDER COMPONENTSMIXES THE COMPONENTSINJECTS AMOUNT FOR EACHBATCH 26. Nanjing 3 093.jpg 27. First compactionstep must becompleted before82 82 Finish before 65 65 28. Proper Pavement Design Composite of Deck & Pavement Fatigue Test of System Strict Quality Control Batch Temperature Control Immediate Compaction to