Common asphalt pavement distresses treatments 02272013 eng

1,291 views

Published on

Published in: Technology
  • Be the first to comment

Common asphalt pavement distresses treatments 02272013 eng

  1. 1. 沥青路面常见病害处治方案Common Asphalt Pavement Distresses Treatments 西安达刚路面机械股份有限公 司 XI’AN DAGANG ROAD MACHINERY CO. LTD. Tel: 0086 29 88327462 E-mail: sales@xadagang.cn Website: www.xadagang.cn www.dgroadmachinery.com
  2. 2. 沥青路面常见病害 Common Asphalt Pavement Distresses 裂 缝 Cracking 表面变形 Surface Deformation 表面缺陷 Surface Defects 填补病害和坑槽 Patching and Potholes 其它病害 Miscellaneous Distresses
  3. 3. 裂缝 Cracking 裂缝类型 Types  疲劳裂缝 Fatigue Crack  温缩 / 横向裂缝 Thermal/Transverse Crack  块状裂缝 Block crack  边缘裂缝 / 啃边 Edge crack  纵向裂缝 Longitudinal crack  反射裂缝 Reflection crack  滑移裂缝 Slippage crack
  4. 4. 疲劳裂缝 / 龟裂 Fatigue cracking/ AlligatorCracking
  5. 5. 疲劳裂缝 / 龟裂 Fatigue cracking/ AlligatorCracking 可能的原因 Possible Causes  路面结构强度不足 Insufficient pavement structural strength  路面寿命终结 End of pavement life  路面负荷太重 Too heavy of loads
  6. 6. 疲劳裂缝 / 龟裂 Fatigue cracking/ AlligatorCracking  病害处治 Cures  局部修补 Localized patching  碎石封层 Chip seal or seal coat  铣刨和重铺罩面 Mill and overlay
  7. 7. 温缩 / 横向裂缝Thermal/Transverse Cracking
  8. 8. 温缩 / 横向裂缝Thermal/Transverse Cracking 可能的原因 Possible Causes  温度变化造成的路面收缩与膨胀 Contraction and Expansion of Pavement with Changing Temperatures
  9. 9. 温缩 / 横向裂缝Thermal/Transverse Cracking 病害处治 Cures  封缝或灌缝 Crack sealing or Crack filling  局部修补 Localized patching  全深式裂缝维修 Full-depth crack repair  碎石封层 Chip seal or seal coat  全深式再生 Full-Depth Reclamation
  10. 10. 块状裂缝 Block Cracking
  11. 11. 块状裂缝 Block Cracking 可能的原因 Possible Causes  高空隙率 High Void Content  沥青混凝土氧化硬化 Oxidative Hardening of the AC  温缩裂缝 Thermal Cracking
  12. 12. 块状裂缝 Block Cracking 病害处治 Cures  封缝或灌缝 Crack sealing or Crack filling  局部修补 Localized patching  碎石封层 Chip seal or seal coat  热拌沥青混合料薄层罩面 Thin hot-mix overlay  全深式再生 Full-Depth Reclamation
  13. 13. 边缘裂缝 Edge cracking
  14. 14. 边缘裂缝 Edge cracking 可能的原因 Possible Causes  路面下的土移动 Soil Movement Beneath Pavement 病害处治 Cures  封缝或灌缝 Crack sealing or Crack filling  局部修补 Localized patching  全深式再生 Full-Depth Reclamation
  15. 15. 纵向裂缝 Longitudinal cracking
  16. 16. 纵向裂缝 Longitudinal cracking 可能的原因 Possible Causes  低温 Low temperature  重载交通 Overload traffic  施工接缝 longitudinal joint  路基移动 Road base movement 病害处治 Cure  封缝或灌缝 Crack sealing or Crack filling  局部修补 Localized patching  全深式裂缝维修 Full-depth crack repair
  17. 17. 反射裂缝 Reflection cracking
  18. 18. 反射裂缝 Reflection cracking 可能的原因 Possible Causes  下层结构的裂缝或接缝反射 Reflection of existing cracks or joints in the underlying structure  水泥混凝土基层移动 Concrete slab movements 病害处治 Cure  封缝或灌缝 Crack sealing or Crack filling  局部修补 Localized patching  热拌沥青混合料薄层罩面 Thin hot-mix overlay
  19. 19. 滑移裂缝 Slippage cracking
  20. 20. 滑移裂缝 Slippage cracking 病害描述 Description  在刹车、转弯、加速路段出现的的 U 型开裂 U-shaped cracks in areas of braking, turning, accelerating. 可能的原因 Possible Causes  沥青表面层与其下卧层间的粘结力差 Poor bond between asphalt surface and underlying layer 病害处治 Cures 局部修补 Localized patching
  21. 21. 表面变形 Surface Deformation 类型 Types  车辙 Rutting  推挤 / 拥包 Shoving and Corrugation
  22. 22. 车辙 Rutting
  23. 23. 车辙 Rutting 可能的原因 Possible Causes  施工过程中沥青混合料压实不足 Insufficient compaction of HMA layers during construction. (If it is not compacted enough initially, HMA pavement may continue to densify under traffic loads.)  路面承载不足致使路基出现车辙 Subgrade rutting (e.g., as a result of inadequate pavement structure)  沥青混合料设计或生产不正确 (如沥青含量过高、粉料过多 、规则集料量不足) Improper mix design or manufacture (e.g., excessively high asphalt content, excessive mineral filler, insufficient amount of angular aggregate particles)
  24. 24. 车辙 Rutting 病害处治 Cures 局部修补 Localized patching 微表处 Micro Surfacing 热拌沥青混合料薄层罩面 Thin hot-mix overlay
  25. 25. 推挤 / 拥包 Shoving and Corrugation
  26. 26. 推挤 / 拥包 Shoving and Corrugation 可能的原因 Possible Causes  不稳定的沥青混合料层 An unstable (i.e. low stiffness) HMA layer (caused by mix contamination, poor mix design, poor HMA manufacturing, or lack of aeration of liquid asphalt emulsions)  路基湿度过大 Excessive moisture in the subgrade  层间移动滑移 Slippage between layers
  27. 27. 推挤 / 拥包 Shoving and Corrugation 病害处治 Cures 局部修补 ( 挖除和填补 ) Localized patching ( Remove the distorted pavement and patch )  铣刨和重铺 Milling and Overlay ( Remove the damaged pavement and overlay )
  28. 28. 表面缺陷 Surface Defects 类型 Types  泛油 Bleeding  骨料磨光 Polished Aggregate  松散 Raveling
  29. 29. 泛油 Bleeding
  30. 30. 泛油 Bleeding 可能的原因 Possible Causes  沥青混合料沥青含量过高 ( 沥青混凝土路面) Excessive asphalt binder in the HMA (either due to mix design or manufacturing)  沥青洒布量过大 (沥青表处路面) Excessive application of asphalt binder during BST application  沥青混合料孔隙率过低 Low HMA air void content (e.g., not enough room for the asphalt to expand into during hot weather)
  31. 31. 泛油 Bleeding 病害处治 Cures  碎石封层 Seal coat or Double chip seal  稀浆封层 Slurry seal  微表处 Micro Surfacing  热拌沥青混合料薄层罩面 Thin hot-mix overlay
  32. 32. 骨料磨光 Polished Aggregate
  33. 33. 骨料磨光 Polished Aggregate 可能的原因 Possible Causes  软骨料 Soft aggregate  重载交通 Heavy traffic 病害处治 Cures  碎石封层 Seal coat or Double chip seal  稀浆封层 Slurry seal  微表处 Micro Surfacing  热拌沥青混合料薄层罩面 Thin hot-mix overlay
  34. 34. 松散 Raveling
  35. 35. 松散 Raveling 可能的原因 Possible Causes  骨料颗粒和沥青之间缺乏粘结力(原因:骨料含尘 量大、骨料离析、施工过程中压实不够) Loss of bond between aggregate particles and the asphalt binder as a result of:  A dust coating on the aggregate particles that forces the asphalt binder to bond with the dust rather than the aggregate.  Aggregate Segregation.  Inadequate compaction during construction.
  36. 36. 松散 Raveling 病害处治 Cures  局部修补(挖除和修补 ) Localized patching (Remove the raveled pavement and patch)  雾封层 Fog seal  碎石封层 Seal coat or Double chip seal  稀浆封层 Slurry seal  微表处 Micro Surfacing  热拌沥青混合料薄层罩面 Thin hot-mix overlay
  37. 37. 填补病害和坑槽 Patching and Potholes 类型 Types  填补恶化 Patch Deterioration  坑槽 Potholes
  38. 38. 填补恶化 Patch Deterioration
  39. 39. 填补恶化 Patch Deterioration 可能的原因 Possible Causes  填补材料与原路面粘结差 Poor bonding to existing pavement  不正确的压实 Improper compaction  填补材料差 Poor patching materials  原始病害的蔓延 Propagation of original distress 病害处治 Cures  修补(挖除和修补 ) Patching (Remove and patch)
  40. 40. 坑槽 Potholes
  41. 41. 坑槽 Potholes 可能的原因 Possible Causes  裂缝松散 Raveling of cracks  水损害 Moisture damage  冻融 Freeze-thaw  强度不足 Insufficient strength 病害处治 Cures  修补 Patching
  42. 42. 其它病害 Miscellaneous Distresses 类型 Types  行车道至路肩部分下沉 Lane-to-Shoulder Dropoff  泛水和唧浆 Water Bleeding and Pumping
  43. 43. 行车道至路肩下沉 Lane-to-Shoulder Dropoff
  44. 44. 行车道至路肩下沉 Lane-to-Shoulder Dropoff 可能的原因 Possible Causes  行车道和路肩的材料有差别 Differences in materials used for lane and shoulder .  不均匀沉降 Differential settlement  基层压实不足 Insufficient compaction of base 病害处治 Cures  铺设调平层 leveling overlay  微表处 Micro-surfacing
  45. 45. 泛水和唧浆 Water Bleeding and Pumping
  46. 46. 泛水和唧浆 Water Bleeding and Pumping 可能的原因 Possible Causes  裂缝 Cracks  排水不足 Inadequate drainage 病害处治 Cures  全深式修补 Full-depth patch  裂缝填封 Crack seal
  47. 47. Thank You 13909265848 l.tj@163.com Sun Jianxi

×