The advent of Tier 3 engines has ushered in a new
generation of 10-foot asphalt pavers. Here’s a scorecard of what’s new.
Roadtec
Wider tracks lighten the load
 Roadtec has improved the track system of the RP-195
paver, said to be the largest rubber-track paver on the market. The new
system includes wider tracks, for the largest footprint in the class,
according to Roadtec. Rubber-coated oscillating front bogies provide even
pressure along the track footprint, and a hydraulic tensioning system
provides constant band traction and increased maneuverability.
Its combination of high floatation and the ability
to counter-rotate gives the RP 195 the ability to pave in tight spaces
without sacrificing tractive effort or pushing power, according to Roadtec.
With the standard S-10EH electrically heated 10-foot
vibratory screed, the RP-195 has a shipping weight of 43,000 pounds. Screed
extensions are available in 6-, 24- and 36-inch lengths. The Eagle 10 screed
is also available; it is hydraulically extendible to 19 feet, 6 inches and
features electronic heat and rear-mounted extensions.
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Caterpillar
High-production pavers get upgrades
 Caterpillar has incorporated new Tier 3 engines in
its high-production 10-foot pavers, the wheel-type AP-1000D and the
track-mounted AP1055D. Along with the new 224 net-horsepower turbodiesel
engine, the 10-foot pavers get a new high-capacity cooling system for
working in high ambient temperatures. Fuel economy has been improved and
sound levels have been reduced, according to Cat.
Designed to pave Interstates, highways,
subdivisions, and airports, Cat’s 1000-series pavers feature dual operating
stations that rotate into four different positions for optimum visibility,
and a proprietary material handling system that Cat claims is the industry’s
most advanced. The 6.1-cubic meter hopper has a 10-foot, 7-inch wide truck
entry width. The hopper includes power dumping controlled from the operator
stations, with heavy-duty flashing to prevent spillage. The machine
controller is used to calibrate and precisely control the augers and
feeders. Left and right augers are controlled independently, as are the left
and right feeders, eliminating the need for feeder gates.
The track-mounted AP-1055D can be equipped with
rubber or steel tracks and has an operating weight of 45,130 pounds with the
standard Extend-A-Mat 10-20B screed; the operating weight of the AP-1000D
has not been released yet. Both machines are available with the Extend-A-Mat
or the AS-2301 screed; electric heating systems are available as options on
both screeds.
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Ingersoll Rand
19-ton paver places anything
 Ingersoll Rand says its 19.3-ton Titan 8820 paver is
designed to place roller compacted concrete, cement-treated base, stone,
soil cement, or any kind of asphalt. Introduced last year, the 8820 brings
many of the features of the big ABG Titan pavers to a lighter machine.
Standard equipment includes a 243-horsepower engine, and the company’s
proprietary electronic paver management control system. The EPM control unit
gives the operator an intuitive interface with paver functions and provides
real-time data on machine operating conditions and diagnostic checks.
The 8820 has variable paving speed control up to 59
feet per minute and a top transport speed of 2.2 miles per hour. It can be
fitted with a variety of Ingersoll Rand screeds, including fixed and
hydraulically extendible models. Depending on screed choice, the unit can
pave up to 43-feet wide and up to 12-inches thick.
Standard features include a sliding operator
platform, work lights, lifetime lubricated crawler track rollers, automatic
track tensioning system, four independent drives for conveyors and augers,
and ultrasonic sensors for proportional material feed control.
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Vogele America
Continuous rubber track drive system
 Vogele America, Wirtgen’s asphalt paver company,
added a 190-horsepower turbocharged diesel to its 10-foot rubber track 2219T
a year ago as a part of a full line upgrade. The company says the 2219T has
the highest roading speed (10 miles per hour) in its class as well as
outstanding control and a smooth ride.
Among the machine’s unique features is a final drive
that uses two hydraulic motors to deliver four speed ranges with
shift-on-the-fly control. It has a 225-cubic foot hopper, hydraulically
adjustable augers, and a fully proportional feeder system that uses
ultrasonic level sensors for precise control.
Vogele says its fume extraction system provides a
more comfortable environment for operators without inhibiting their view of
the augers and head of material. The machine is available with a choice of
four screeds. The HR500D is a diesel-heated screed that extends
hydraulically from 10 feet to 19 feet, 6 inches and has rear-mounted
extensions and telescoping pre-strike-offs. It is now available with
electronic heat as the HR500E.
For sensitive, tender mixes, Vogele’s AP600TP screed
uses a tamper bar and two pressure bars to achieve high-density compaction.
Also available is the EZ-IV 1019 screed.
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Terex Roadbuilding
New engines cut noise, improve efficiency
 Terex|Cedarapids has upgraded its CR500 Series
10-foot pavers with a new Tier 3, 260-horsepower engine that brings more
power, less noise, and greater efficiency to paving operations, according to
the company. The series includes the rubber-tire CR552, the rubber-track
CR562, and the steel-track CR562S. Base hopper capacity is 16.7 tons; hopper
inserts increase capacity to 25 tons for handling mainline applications.
Standard features on the CR500 series include the
company’s patented Frame Raise and Three Point Suspension Systems. The
frame-raise system raises and lowers the rear of the paver, allowing the
operator to fine-tune the head of material at the spreading augers, reducing
segregation, according to Terex. The Three-Point Suspension system isolates
the frame from the drive system, floating the paver over subbase
irregularities to maintain a consistent material feed height at the screed.
CR500 series pavers can be ordered with a
traditional slat conveyor or the company’s proprietary Remix auger delivery
systems. The remix systems feature two sets of two counter-rotating augers
in the hopper to aggressively reblend the mix as it moves to the screed. The
augers are said to uniformly draw down material from all areas of the hopper
to combat particle and thermal segregation, resulting in better mat texture
and consistent temperatures.
The Terex|Cedarapids 10-foot pavers can be equipped
with three different screeds: the diesel Fastach 10, the electric
VersaScreed 10, and the electric or diesel Stretch 20. Depending on the
screed, the machine can pave up to 30-feet wide and place lifts as deep as
12 inches.
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Reprinted from Better Roads Magazine
May 2006 |
