How a Screed Works
P/N 7010-0341 www.topconpositioning.com
2-7
4. Dumping of material in front of the paver as the truck
pulls away after emptying its load into the hopper, can
cause the paver to ride over the pile of material with
subsequent adverse effects on mat quality. Avoid
trucks pulling away prior to completely dumping all
material. Use a dump person to monitor and regulate
truck movements in front of the paver.
Head of Material (“M”)
One of the primary functions of the paver tractor is to convey
and distribute paving material onto the ground in front of the
entire width of the screed. This material, once deposited in
front of the screed is the head of material over which the screed
will pass.
One of the keys to smooth paving is to maintain this head of
material as constant as is possible. The resistance to forward
motion exerted by the head of material (M) is one of the major
component of resistance to forward motion (Figure 2-10).
Control of this force is a basic and necessary function of any
paving operation.
Figure 2-10. Head of Material Force (“M”)
The volume and consistency of the head of material determines
how much paving material flows under the screed and
influences mat thickness and surface texture.
The most common factor affecting force “M”, the head of
material, is incorrectly adjusting the Automatic Feeder
Controls.
Head of
Material
(Force "M")
M
To Next Page
Loading...
Need help?
General
