D41 40
the road roller.
3. It is also possible to lay a rope at the end of the layer and cover it with the
following layer of material. After compacting, a visible mark is left across the
entire width of the layer. The material at the outer side of the rope must then be
removed using shovels and the edge of the layer must be manually
consolidated.
3.2 Joining layers
(Uncompacted layers)
If the paver finisher must be reversed to level a depression in the material laid
while the material has not yet fully cooled down, the road roller should stop at a
distance of at least 3m to the paver finisher.
When joining layers, the paver finisher must be reversed with the screed lifted until
approx. 1m of the material already laid is visible in front of the screed. The screed
must then be lowered onto the layer, the auger must be filled with material and the
layer must be laid again.
Check that the height of the layers is the same as before joining the layers. If the
height has changed, correct the height accordingly while the material is being laid
by the screed.
3.3 Joining a fresh layer
(To a compacted layer)
To join a fresh layer to a compacted layer, the paver finisher can be used as
described above. In this case, however, the height of the fresh layer must be
20-25 % higher than that of the other layer to allow for compacting by the road
roller.
3.4 Laying asphalt over manholes
Irrespective of what method is used, the manhole should be covered with
cardboard or any other suitable material so that excessive material on top of the
manhole can be easily removed. Mark the curb stones or drain pipes in such a
manner that the manhole can be easily located afterwards.
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