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HMA Construction Program HMA Construction Program
Module 7 – Joint Construction Module 7 – Joint Construction
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Module 7 ObjectivesModule 7 Objectives
• Objective of Joint ConstructionObjective of Joint Construction
• Types of Transverse Joint Construction Types of Transverse Joint Construction MethodsMethods
• Types of Longitudinal Joint Construction Types of Longitudinal Joint Construction MethodsMethods
• Proper Joint Luting Proper Joint Luting
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Butt JointButt Joint
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Rolled MatRolled Mat
Rolled MatRolled Mat
New MatNew Mat
PaperPaper
Papered Transverse JointPapered Transverse Joint
RemoveRemove paperpaper
& ramp& ramp
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A good rule of thumb is to raise the screed 20 A good rule of thumb is to raise the screed 20 percent more than the compacted thickness.percent more than the compacted thickness.
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Staggered Paving JointsStaggered Paving Joints
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Compacted Compacted MatMat
Uncompacted Uncompacted MatMat
Typical Overlap on Typical Overlap on Longitudinal JointsLongitudinal Joints
Thickness of Thickness of RolldownRolldown
25-35 mm25-35 mm
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Compacted Compacted MatMat
Uncompacted Uncompacted MatMat
Mix “Bumped Back” to JointMix “Bumped Back” to Joint
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Module 7 – ObjectivesModule 7 – Objectives
• Objective of Joint ConstructionObjective of Joint Construction
• Types of Transverse Joint Construction Types of Transverse Joint Construction MethodsMethods
• Types of Longitudinal Joint Construction Types of Longitudinal Joint Construction MethodsMethods
• Proper Joint Luting Proper Joint Luting