international
construction
december 2014
CONCRETE
28
Latest technology
Topcon’s ScanMaster 3.0Office Software.
“We conducted weekly surface to surface comparisons of the
registered point clouds looking for deformation in the rock
walls,” said company spokesman SamHenderson. “The GLS-
1500 laser scanner gives ahighdegreeof accuracy–we’re talking
withinhundredths of an inch accuracy,” saidHenderson. “I can’t
think of another construction tool on earth with that kind of
accuracy.”
SBMMineral Processing supplied a Specmix plant to produce
1,500 m
3
Ultra High Performance Concrete (UHPC) for
contractorWaloBertschinger’s contract to renovate theViaduct
de Chillon near Villeneuve, Switzerland. The structure is the
third longest bridge in Switzerlandwith a length of 2,100m in
a height of up to 50m.
“Due to our successful job handling for foundations of wind
energy plants and in the field of prefabricating plants, we have
achieved an excellent reputation as being a reliable high-quality
manufacturer of UHPC plants. Thus we have managed to
convinceWalo with our technological expertise,” said an SBM
spokesman.
The Specmix plant provided some 1,500 m³ UHPC for the
bridge over the course of four weeks.The concrete used on the
project had an extremelyhighpercentage of steel fibres, andwas
applied in a thin 50mm base course.
The plant itself consists of three main containers and offers a
capacity of 18 m³/hour and a mixing time of 10 minutes per
batch. The plant is also fully insulated making it suitable for
operation in thewinter.
Mobile batching
Kimera has supplied four K55 plants to Flamecrete Zambia
as part of an order for ten units for the company’s operations
in Lusaka. The company is looking to use this to establish
a presence in the city of Kitwe, in the heart of the country’s
coppermining region.
The new K55 plants are mounted on new 8x4 Scania heavy
duty chassis. It is a 9 m³ capacity mobile continuous batching
plant, able of amaximumproduction of 55m³/h. A key feature
is that the materials remain separate until the production
cycle starts, which the company says means high-quality fresh
concrete is produced.
The aggregate hopper is divided into
two compartments for sand and stone,
while a bin at the back has the capacity
for 3 tonnes of cement. There are water
tanks on both sides.
The operator is able to set up the mix
design from the screen, deciding also
the exact quantity he wants to produce
and the production speed, and then
controls the whole cycle with a remote
radio control which allows him to move
around the unit without problems.
Leica and Kansai have developed
the KUMONOS system, which allows
concrete cracks to bemeasured at a
safe distance using a Viva TS11 and
special reticule.
New from Cifa is the Coguaro4, a 2.5
m highmixer truckwith a 4m
3
drum
designed for tunnelling applications.
Features include an electrically
operated, all-hydraulic drivetrainwith
four-wheel drive and steer.
