Common asphalt pavement distresses treatments 02272013 eng

西安达刚路面机械股份有限公司XI’AN DAGANG ROAD MACHINERY CO. LTD.

沥青路面常见病害处治方案Common Asphalt Pavement Distresses Treatments

Tel: 0086 29 88327462 E-mail: [email protected] Website: www.xadagang.cn www.dgroadmachinery.com

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

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

疲劳裂缝 / 龟裂 Fatigue cracking/ Alligator Cracking

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


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


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



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

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



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

边缘裂缝 Edge cracking

可能的原因 Possible Causes 路面下的土移动 Soil Movement Beneath Pavement

边缘裂缝 Edge cracking

病害处治 Cures 封缝或灌缝 Crack sealing or Crack filling 局部修补 Localized patching 全深式再生 Full-Depth Reclamation

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

纵向裂缝 Longitudinal cracking

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

反射裂缝 Reflection cracking

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

滑移裂缝 Slippage cracking

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

表面变形 Surface Deformation

类型 Types

车辙 Rutting

推挤 / 拥包 Shoving and Corrugation

车辙 Rutting

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)

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


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


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 ）


表面缺陷 Surface Defects

类型 Types

泛油 Bleeding

骨料磨光 Polished Aggregate

松散 Raveling

泛油 Bleeding

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)

泛油 Bleeding

病害处治 Cures

碎石封层 Seal coat or Double chip seal

稀浆封层 Slurry seal





可能的原因 Possible Causes 软骨料 Soft aggregate 重载交通 Heavy traffic

病害处治 Cures





松散 Raveling

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.

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





填补病害和坑槽 Patching and Potholes

类型 Types

填补恶化 Patch Deterioration

坑槽 Potholes


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)


坑槽 Potholes

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

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

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

行车道至路肩下沉 Lane-to-Shoulder Dropoff


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


Thank You [email protected]

Sun Jianxi

Common asphalt pavement distresses treatments 02272013 eng

Technology

asphalt binder

aggregate

remove

patch

bond

construction

result