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Answers to Questions About PCC Paving

PCC is concrete laid by the paver. PCC stands
for “Paver Compacted Concrete”.
When comparing PCC and asphalt, the concrete
pave-ment is superior in terms of stability, longer in-service life
and resistance to deformation due to heat. On the other hand, road
repairs are easier to carry out for asphalt pavements. When using
VÖGELE road pavers, costs for paving PCC or asphalt are almost
identical.
PCC can be laid by the paver similar to
laying asphalt, the pave speed however is slower (about 1m/min.).
When paving PCC with a VÖGELE SB 250 B Fixed-Width Concrete
Screed in TVP2 version, there is no need for extra compaction by
rolling.
PCC strips are laid “fresh to fresh”
(new strip paved adjacent to the previously laid, still fresh one)
or “fresh to cured”, but never “fresh to semi-cured”.
A PCC pavement can carry many times the
load of an asphalt pavement. This is why PCC is perfectly suited
to use for heavily loaded surfaces such as storage areas for containers.
In order to ensure impeccable hardening of the concrete, the pavement
must undergo proper treatment after paving and be sprayed with water.
VÖGELE NIVELTRONIC Grade and Slope
Control produces surfaces of absolute evenness, no water ponding
on the pavement. Level sensors and slope sensor help achieve optimal
results.
The use of VÖGELE pavers is efficient
also for small contracts (generally carried out in the conventional
way with slipform and poured concrete).
Pavers are fed with PCC by feed lorries (same way as with asphalt).
After PCC paving, the paver can easily
be cleaned by high-pressure jet of water. After a change of screeds
the machine is immediately ready for asphalt paving.

Final density achieved without any problems
with the VÖGELE SB 250 B Fixed-Width Concrete Screed.
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