30
CONSTRUCTION EUROPE
DECEMBER 2013-JANUARY 2014
ROADBUILDING
The authority worked with contractor
Matthäi to scan the asphalt repaving of the
northbound lane of the A14 using the Pave-IR
system. The concrete surface was removed
on a section approximately 1km long over a
width of about 8.5m.
A new asphalt binder layer and asphalt
surface layer were then paved using the hot-
on-hot process with two pavers, travelling one
behind the other, paving the binder layer and
surface layer as compact asphalt.
The components of the Pave-IR scan
system – an infrared temperature scanner,
a GNSS antenna for precise positioning and
an on-board computer – were installed on
the paver used for the surface layer. The
temperature sensor scanned the paved
asphalt temperature every 250mm with an
accuracy of ±2
o
C.
Guido Schwabe, who oversees the
construction work on behalf of the LSBB, said,
“Previously, it was only possible to measure
the temperature on a random basis. With the
system, this is possible over the entire area
and continuously for the entire project.”
The authority plans to use the Pave-IR Scan
systemagain on another state road resurfacing
project in 2014. Following this second test,
it said it would decide how to integrate this
new option as a standard requirement in
tenders in the future. The Pave-IR Scan system
is expected to be available for the European
market in early summer 2014.
COMPACTION
Elsewhere, manufacturers of compaction
machines are working hard to improve the
performance of their equipment, and are
introducing technology that reduces noise
and vibrations felt by the operator.
Volvo CE has recently launched new soil
compactors in the shape of the SD75, SD115
and SD135 models, for instance, and the
operator was at the centre of the designs.
Rental company able to handle
customer‘s last-minute request
Shortly after a project to upgrade of the B2 federal highway in Germany began, it became
evident that the composition of the excavated soil made it unsuitable for hauling away with
conventional construction site trucks.
The B2 is one of Germany’s oldest highways and a stretch of 3.6km is being widened from
two to four lanes near to the town of Roth. The project calls for the excavation of 275,000m³
of earth and is scheduled for completion in 2014.
German contractor Thannhauser und Ulbricht Straßen- und Tiefbau decided it needed
four new 28 tonne capacity Doosan DA30 articulated dump trucks and a new Doosan 50
tonne class DX490LC-3 crawler excavator as
something of a last-minute requirement to
help on the project.
Nevertheless, the machines were supplied
within 10 days by rental fleet manager Rühle
Maschinenpark, based in Untermünkheim-
Haagen, Germany.
Rühle Maschinenpark director Achim
Rühle said, “Though we didn’t have four
dump trucks ready in the yard, through
our position as a Doosan dealership, we
were able to obtain the machines from the
Doosan fleet holding to meet our client’s
needs.”
The Doosan fleet makes a series of
machines available for leasing to Doosan
dealerships. In this way, Doosan dealers can
also react to client requests without making
high investments, even for machines they
do not have in their own rental fleet.
Volvo CE’s new SD75, SD115 and
SD135 soil compactors are said to
offer more power, greater efficiency
and up to a 30% reduction in fuel
consumption over previous models
Doosan dealers can react to client
requests without making high
investments, even for machines they
do not have in their own rental fleet
