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A fleet of trucks, hauling six yards at a lime, keep the huge paving machine supplied with dry mix concrete. The
paver has two mixing drums. '
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The picture above shows the screw-type spreader that di slrlbutcs the concrete between the forms. Traveling buckets,
ncljng on booms, take the concrete from the mixers and place It where It is needed. Barring unforeseen delays, all
concreting on this section will be finished by July 4, according to Lee Cassels, job superintendent for Peter Kiewit
and Sons, contractors.
Features
Sports
MedfordTribune
SECTION B MEDFORD. OREGON, SUNDAY. JUNE 10, 1962 PAGES 1 to 8
The
Freeway
Paving
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Tne ary Dacch mixture in me skip of paving macmne win ue aumpea into tne mixer,
where a measured amount of water will be added. The mixer does not ride the "rails"
but has crawler tracks of its own. '
Process
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The picture above shows the mesh installer that vibrates the metal reinforcing mesh into the fresh concrete.
The machine was specially-built by Peter Kiewit and Sons, contractors. When the concrete has cured to a certain stage,
expansion joints will be sawed into the pavement at intervals of 61.5 feet.
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The transverse finishing machine or power screed levels the surface of the 24 toot
strip of pavement. A man with a long-handled float corrects flaws left by machine.
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The dry batch plant on the freeway near Central Point is where the aggregates and
cement are measured out into compartmented dump trucks. There are four compart
ments in a truck, each holding a yard and a half of mix.
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A fronl end loader feeds sand to conveyors at the batch plant. About 2.000 yards of
concrete are being laid each day on the Seven Oaks- Jackson st. section of the Interstate
3 freeway.
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Three tank trucks, each holding 3,000 gallons, keep the paving machine supplied with
water. Water is forced through four-inch flexible hose by the pump mounted on the
rear of the truck.