Modern Contractor Solutions January 2025 - 14

project profile
SEWER CONSTRUCTION
Blue Rock Breakdown
mobicat MC 110i EVO2 crunches Hawaiian blue rock
O
n Hawaii's main island, Big Island, a
sewer is being constructed alongside
the highway from the town center to a
new residential development. The challenge
here is the hard volcanic rock that needs to
be crushed-the so-called Hawaiian Blue
Rock. A Mobicat MC 110i EVO2 mobile jaw
crusher has been deployed for the production
of material to be used in the laying of the
wastewater sewer pipe.
POWERFUL PERFORMANCE
Big Island is the largest of the Hawaiian
Islands and, with Kilauea and Mauna Loa,
is home to two of the world's most active
volcanoes. The properties of the lava from
eruptions vary from rocks containing gas
bubbles and jagged edges to extremely
dense and hard basaltic rocks from the
cooled interiors of lava flows. This so-called
Hawaiian Blue Rock is a hard basalt with a
shiny bluish tint that is in high demand due to
its exceptional quality, but is also particularly
hard to crush.
For this project, contractor Goodfellow
Bros. therefore required a particularly rugged
and simultaneously reliable and powerful
crusher that could meet these requirements.
The contractor chose a Kleemann Mobicat
MC 110i EVO2 mobile jaw crusher for the job,
14
JANUARY 2025
which is used for pre-crushing almost all types
of natural stone and in recycling processes
around the globe.
OVERLOAD SYSTEM
The Blue Rock is being crushed to produce
aggregates for the sewer construction project
in two grain sizes: 0-20 mm for the base layer
and 0-100 mm for filling. The new-generation
EVO2 mobile jaw crusher is designed to
deliver an optimal material flow and, thanks
to its high hourly output, is a particularly costefficient
crushing solution. Its multi-stage
overload system detects and automatically
regulates sporadic overload situations
caused by excessively hard and uncrushable
materials. This increases the machine's
utilization rate.
EASY HANDLING
Machine operator Bully Fergerstrom was
impressed by the quality and solid build of
the machine and particularly emphasized the
user-friendly functions like the Continuous
Feed System (CFS) and the intuitive operating
concept that guides him through the process
workflow on the project site.
" I like the functions, " says Fergerstrom.
" They make sure I can do a good job. The
user-friendly display guides me through the
process and shows me what steps come next
to get the machine up and running. Operating
the machine is pretty easy. "
RELIABLE SERVICE
Especially on projects involving the crushing
of exceptional rock types, a powerful machine
with easy handling and close collaboration
with a trusted local partner plays a decisive
role. This is why foreman Chris Pulgados
appreciates not only the high quality of the
machine, but also the outstanding service
provided by local Wirtgen Group dealer
Papé Machinery.
" The service they provide couldn't be
better, " says Pulgados. " We're so lucky to have
them nearby. If we call them, it takes them
only around five minutes to get here. "
for more information
From mining and milling to paving, compaction,
and rehabilitation, Wirtgen Group's complete
range of machines and plants are smart, safe,
and sustainable, consistently delivering the
highest quality and lowest total cost of ownership
across the road-construction process chain. For
more, visit www.wirtgen-group.com.
www.mcsmag.com
http://www.wirtgen-group.com http://www.mcsmag.com
Modern Contractor Solutions January 2025

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