Transcription of Common Flexible Pavement Distresses
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Common Flexible Pavement Distresses
Common Distresses on Flexible TechnicalAdvisory Guide (MTAG)Fundamentals of PavementszFunction of pavementszFactors affecting Pavement performance Subgrade soil Pavement materials characteristics Asphalt cement Aggregate Modifiers for asphalt cement ( , rubber and polymers) Additives or stabilizing agents for aggregates ( , lime and cement) Traffic loading Environment Moisture; and TemperatureCommon Flexible Pavement DistresseszCrackingzDeformationzDeterior ationzMat problemszProblems associated with seal coatsCommon Flexible Pavement DistressesCategoryDistress TypeCrackingLongitudinal, fatigue, transverse, reflective, block, edgeDeformationRutting, corrugation, shoving, depression, overlay bumpsDeteriorationDelamination, potholes, patching, raveling, stripping, polished aggregate, pumpingMat problemSegregation, checking, bleedingSeal CoatsRock loss, segregation, bleeding/fat spots, DelaminationInitial Site AssessmentDistress IdentificationzTypes of Distresses and DefinitionszDefinitions from: Guide to the Investigation and Remediation of Distress in Flexible Pavements, Caltrans, July 2003 Distress Identification Manual for the Long-Term Pavement Performance Program, FHWA, June 2003 LONGITUDINAL CRACKINGC racks that are approximately parallel to Pavement centerline and are not in the wheel path.
EDGE CRACKING. Crescent-shaped cracks or fairly continuous cracks that intersect the pavement edge and are located within 2 feet of the pavement edge, adjacent to the unpaved shoulder.
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