Rolling Right Along by ProQuest

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									Finishing                 Kimberly Johnston, Associate Editor



Rolling Right Along
Roller screeds offer
contractors options
for screeding and the
ability to strike off
unique applications.

W
           hen it comes to screeding
           concrete, contractors have a
           variety of options to choose
from. One of those options is a power
roller screed, also called a friction
screed. A roller screed is powered by
either an electric, hydraulic or gas motor
and spins in the opposite direction it is
being pulled. The spinning motion levels
the concrete while pulling it forward.
  The motion of the screed loads the
concrete in front of the screed and
then pushes it down into the rest of
the concrete providing compaction,
says Spin Screed Inc.’s President
Joe Churchill.
  Roller screeds are made of a power            When working on inclines, roller screeds are the way to go, manufacturers say.
head (end with the motor), tubular roll-        They are lightweight and easily pulled on slopes.
ers and a tailpiece, says Bud Martin,
field sales manager with TerraQuip               at the surface, a roller screed doesn’t      ends and inside of the pipe also need
Construction Products, Inc., which                       ”
                                                do that, Churchill says. “One of the         lubrication from time to time, he adds.
manufactures the Terramite roller               big advantages of a roller screed is you
screeds. These screeds can be oper-             can pour concrete wetter and still get a     Unique applications
ated by a two-man crew pulling the                                ”
                                                durable surface, he adds.                    Roller screeds are designed to be used
handles on each end of the screed.                And roller screeds do not vibrate,         with flat concrete slabs, but they can
The various lengths of pipe allow               which keeps the aggregate near the sur-      also be used in some unique applica-
contractors to accommodate different            face resulting in a harder surface, says     tions. Because roller screeds are light-
job sizes. With some roller screeds,            Joe Lindley of Jlin Corp./Multivibe. “It     weight and pulled by the crew, they are
pipes can be combined to create a               does have to rest on forms. The forms        a great option for inclined pours. “You
longer screed. It is important to note          are your grade. All a person has to do is    can’t strike off a pour going downhill
that screed lengths should not be too           just pull the roller screed until the tube   or uphill with anything that vibrates
large, though. Make sure to check                                       ”
                                                is riding on the forms, Lindley adds.        because it’s always going to shake the
with the manufacturer on limitations or           The roller screed is a lightweight unit                         ”
                                                                                             mud to the bottom, Lura says.
requirements.                                   and very portable. It can be lifted by         One of the most popular uses for
                                                the crew and transported in a truck,         roller screeds is with pervious con-
What’s the difference?                          without the need for a job trailer,          crete placement. Pervious concrete is
“The roller screed differs from other           adds Dennis Lura, president of Lura          a drier mix with zero slump. But even
screeds in that it will strike off, level and   Enterprises.                                 more important is that pervious con-
                                  ”

								
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