Volvo Construction EquipmentRoad Institute
Paving Principles
Volvo Construction EquipmentRoad Institute
Paving Principles
Volvo Construction EquipmentRoad Institute
Paving Principles
Volvo Construction EquipmentPaving Principles
Why Smoothness?
•Smooth Pavements last longer•Smooth Pavements save fuel•Smooth Pavements are quieter•Smooth Pavements require less Maintenance•Smooth Pavements save $$$!
Volvo Construction EquipmentPaving Principles
Tools of the TradeProfilographs
High Speed Profilers
How are we measured?
• IRI= International Roughness Index
•Paving Contractors will receive bonus or penalty based on the outcome of these numbers
Volvo Construction EquipmentPaving Principles
Freshly Placed Mat
15% Compaction From Roller
Mat Profile After Compaction is Greatly Improved Compared to the
Original Base Profile
Original Uneven Base
15 m (50 ft)
Leveling Course
Milled Surface
The more layers that are laid: the better the surface finish
Differential Compaction
Volvo Construction EquipmentPaving Principles
Opportunity for improvement: leveling, filling and milling
Density off the screed contributes greatly to Smoothness
Volvo Construction EquipmentPaving Principles
Balance at the Paver
Factor No 3:
Paving Speed
Factor No 2: Head of Material
Factor No 1:
Angle of Attack
Any variation in these three factors will affect this balance and may cause undesired screed reactions
Head of Material is the key!
Volvo Construction EquipmentPaving Principles
Balance and Best Practice with Compaction
•Angled stops•Away from outside edges•Staggered stops
•Do not over-speed the rollers•Maintain 10-14 Impacts per foot
Volvo Construction EquipmentPaving Principles
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