Figure 11-47.-Overlapping sections.
Figure 11-48.Banked curve rolling sequence.
placement of riprap, soil cement, asphalt stabilization,
mat being laid. This optimum temperature should range
and so forth.
between 225°F to 285°F.
Rollers designed for bituminous operations are
equipped with sprinklers that spray water on the smooth
Most of the compaction required in bituminous
tires and drums. When you are rolling bituminous
construction is achieved by the tamper on the asphalt
materials, the roller tires and drums must be moist with
paver. Additional compaction and final surface texture
water to keep the bituminous materials from sticking.
are achieved by applying the rollers in the proper
When water is not enough to keep the bituminous
sequence. The hot mix should be at its optimum temper-
material from sticking, a non-foaming detergent is
ature for rolling when the rollers start to operate on the
added to the water until the water has a soapy feeling.