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&
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MARCH-APRIL 2015
IN ACTION
U
K contractorColeman&Company
is using a speciallydeveloped remote
control JCB excavator sporting a 4
tonnemultiprocessor to remove reinforced
concrete floors duringongoingdemolition
work at BirminghamNewStreet Station. The
machine is a 21 tonne excavator that combines
a JCB JS190upper structurewith a JS220LC
undercarriage and rubber trackpads that
allows it todeploy a 4 tonnemultiprocessor
without exceeding a grossmachineweight of
25 tonnes.
Coleman is now in its fifth year on site
and the current phase requires the removal
of 6,000 tonnes ofmass reinforced concrete
during2014 and2015. Somebeamsweigh as
much as 90 tonnes and are 2.5m (8.2 ft)wide
and1.5m (5 ft) deep. Thework is takingplace
directlybeneath thenewly constructed,multi
millionpound atrium steelwork structure that
must beprotected from any impact from the
demolitionwork. It is also takingplacewithin
a live construction sitewhile 140,000people
continue to travel through the stationdaily.
Coleman&Company technicalmanager
ChrisHolland said: “We asked JCB todesign a
bespokemachine that could carryout specific
tasks inhigh risk and technically challenging
environments. The stakes are veryhigh at
NewStreet givenwe’ll be operating above
12 live train lines carrying thousands of
passengers per day.”
Thenewmachine is expected towork
on theproject for thenext ninemonths.
Therafter, itwill provideColemanwith a
unique tool for use in any futurehighly
complexdemolition tasks.
■
Spray in control
A Californian recycler is using a DustBoss DB-45 atomised water mist generator to
control dust at its Chula Vista facility, which sees dozens of dump trucks deliver recovered
road surfacing and demolition waste every day. Reclaimed Aggregates Inc, formed in
2005 as a subsidiary of Pavement Recycling Systems, added the Chula Vista site to its
two other locations in Colton and Lancaster in 2009.
The former is now its largest location, where it processes concrete and asphalt.
Material is offloaded onto a 61m (220) square dry earth receiving area and immediately
moved by front loader to the crusher or into storage piles, creating a large volume of
dust as a result. RAI first tried a sprinkler system to control this dust, which was causing
issues for adjacent businesses, but this solution just saturated thematerial to createmud
but dust was still an issue.
RAI then tried the DustBoss DB-45 and
found its range well suited to the size of
the area requiring dust management. The
unit is able to throw its atomised plume
46m (150 ft) to deliver effective dust
control over a 1,115m
2
(12,000 ft
2
))
area. When equipped with optional 359°
oscillation, the design can cover asmuch
as 16,875m
2
(74,000 ft
2
) from a single
location.
ADustBoss DB-45 is providing effective dust control
at a concrete and asphalt recycling centre in
California, USA
Cologne, Germany, locatedMax Becker Trading
GmbH has recently taken delivery of a new
Sennebogen 850R Special Electro, which is being
used to charge scrapmetal shears aswell as
for general sorting. The 850R Special is fitted
with a 250 kW (336 hp) electricmotor that saves
50% in energy and operating costs compared to
the diesel-poweredmachine it has replaced. The
reach of over 20m (66 ft) covers an area of just
under 1,300m
2
(13,994 ft
2
). Thanks to the crawler
undercarriagewith a 4.9m (16 ft) trackwidth, the
machine is extremely safe but can also be easily
moved over the entire compound. The cab has been
raised by 5m (16.4 ft) through the use of a pylon
that, combinedwith the 1m rigid cabin elevation,
gives clear visibility over theworking envelope
during shear charging duties.
Remote in control
The remotely controlledmachine
developed by JCB for Coleman
& Company has a JS190 upper
mounted on a larger JS220LC
undercarriage to keep the
weight, including 4 tonne tool,
below 25 tonnes
