Topcon mmGPS 3D Paver, Reference Manual

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Paving Principles
mmGPS 3D Paver Reference Manual
4-14
Rolling Techniques
A well laid mat ends up with a poor ride quality if proper rolling
methods are not followed. Consult your compaction equipment
manufacture’s manuals and handbooks on compaction techniques.
Controlling Mat Quality
The primary purpose of the asphalt paver is to place a smooth mat of
material. The primary function of mmGPS 3D Paver is to control the
vertical position of the screed in relation to the surface being paved.
Automatic grade and slope control systems helps tremendously in
controlling mat smoothness but mat quality is also dependent on the
following factors:
• Non-stop, continuous operation of paver
• Constant speed of paver
• Truck exchange
• Head of material
• Mix characteristics
– Gradation
– Segregation
– Mix Temperature
• Screed Compaction
• Quality of Base Being Paved
• Rolling Techniques
NOTICE
Changes in any of these factors causes a change in
mat thickness, density, surface appearance, and mat
quality. If changes must be made, make them as
gradually as possible. Abrupt changes in any of the
above factors produces rapid changes in mat
thickness, adversely affecting mat quality.