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