INNOVATIONS IN PAVEMENT MAINTENANCE IN-PLACE …
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04.03.2020 1 A WIRTGEN GROUP COMPANY INNOVATIONS IN PAVEMENT MAINTENANCE IN-PLACE RECYCLING Why Recycle? Pavement is past conventional overly stage Make maximum use of tight budgets—40% Utilizes existing paid-for materials in place Fast process—less closure days Asphalt stabilized mixes are flexible and retard cracking Accommodates traffic Can be re-recycled Green factor Cold In-Place Recycling Typical Pavement for Cold Recycling Typical application range – 3”-6” Construction of Base Layer Hot Mix Asphalt Structure Aggregate Base Soil Sub-base 1 2 3
Transcript of INNOVATIONS IN PAVEMENT MAINTENANCE IN-PLACE …
04.03.2020
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A WIRTGEN GROUP COMPANY
INNOVATIONS IN PAVEMENT MAINTENANCE
IN-PLACE RECYCLING
Why Recycle?
Pavement is past conventional overly stage Make maximum use of tight budgets—40%Utilizes existing paid-for materials in placeFast process—less closure daysAsphalt stabilized mixes are flexible and retard crackingAccommodates trafficCan be re-recycledGreen factor
Cold In-Place Recycling
Typical Pavement for Cold Recycling
Typical application range – 3”-6”Construction of Base Layer
Hot Mix Asphalt Structure
Aggregate Base
Soil Sub-base
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Multi-unit CIP Recycling Train since the 1960s
1.Active filler spreader2.Water Truck3.Bitumen Tanker4.Cold Recycler
Single Unit CIP Recycling Train
5.Paver6.Tandem Steel Drum Roller7.Pneumatic Roller
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Wirtgen 3800CR
3800CR Rear-loading material into a Vogele paver
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Wirtgen 3800CR
Recycles asphalt layers at widths of up to 12’6” wide and depths of up to 6.” Down-cut drum direction ensures superior material sizing Different injection systems for the precise addition of binders give the cold
recycler superior flexibility
New Technology—Introduced in 2019
Recycles multi widths and up to 12” in depth Down-cut in recycling mode; up-cut in milling mode New Vario injection systems allows for precise dosing when doing up to 800 tons per hour
A WIRTGEN GROUP COMPANY
W 380 CR(I)FLEXIBLE WORKING WIDTH
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FR
FB: 3.2 m-- 3.8 m10
Dimensions
W 380 CR(i) Flexible Cutting System-FCS
10’ 6”
11’ 6”
12’ 6”
Side plates for both working directions
Quick exchangeable seal
Component - Side plates
Quick change betweenfront and rear load
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A WIRTGEN GROUP COMPANY
W 380 CR(I)MAIN MACHINE APPLICATIONS
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Main machine applications
Rear-load Recycler into PaverCIR – 3” – 6”FDR - 12” (NEW)
Secondary machine applications:Front-load milling
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W380CRi
W380CRi
A WIRTGEN GROUP COMPANY
W 380 CR(I)NEW GENERATION - SPRAYBARSYSTEMS
Pump systems fully integrated, access from top and underneath
Spray bars
Push rod connection and storage for transport
Hoses integrated into chassis
Foam test nozzle
Component - Spraying systems
All spray systems fully integrated in machine
Water tank can be filled directly or with 800 l pump
Foam test nozzle in front, between the tracks
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High-precision, reliable injection systems
Integrated injectionsystemsHigh-precision, microcontroller-controlled injection systems can be relied on to precisely govern the addition of water, bitumen emulsion or foamed bitumen.
Two injection bars can beoperated simultaneouslywhen adding water and bitumen emulsion.
High-precision, reliable injection systems
Adjustable injectionpressureThe VARIO injection bars for foamed bitumen, emulsion and water feature nozzles with an adjustable cross-section to allow flexible adjustment of the spraying pressure.
Metering panel for easy monitoring of bindermeteringThe metering panel with screen can be used to adjust and monitor all important parameters related to binder metering.
High-precision, reliable injection systems
Operating principle: variable nozzle cross-sections in the injection bar for water or bitumen emulsion.
The injection system feedswater into the mixingchamber in a microcontroller-controlledprocess and in accordancewith the mix formulation toachieve the optimummoisture content.
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Placing with Pavers with high density screeds
Paver designs now allow for placement of thicker material mats
Larger material tunnels and augersScreeds with Tamper bars Pressure barsInitial compaction of 86%-88%
New Technology
W380CRi and Vogele Super 2000 paver with high density screed allows for:
Greater depth of the recycling layer Taken down to the top of the aggregate through thicker
asphaltAbility to recycle higher volumes of material with Varioinjection systems-->width > 12.5’, depth > 8”Achieve ride quality and density with thicker mats and smooth drum compaction
A WIRTGEN GROUP COMPANY
W 380 CR(I)ENGINE
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Engine
03CR = AG2 =>für LRC:C27: 708 kW / 950 HP @ 2100 rpm
04CR = AG4f =>für HRC:C27: 783 kW / 1050 HP @ 1800 rpm
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A WIRTGEN GROUP COMPANY
W 380 CR(I)VISIBILITY
Visibility
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Double wasp tail for bi-directional operating
View channel between chassis and belt housing to check zero cut
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Camera system
Standard systemCamera in front of machine with 2 displays left and right at operator standCamera at conveyor end, shown on main display and closing panel
Extended camera system4 additional cameras1 additional display for operator stand
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Perfection in visibility, comfort and ergonomic design
High-quality camera systemThe standard version of the robust camera system consists of one camera in the front area and optionally of up to seven cameras.
High-resolution camera images can be simultaneously displayed on different screens. The camera image of the discharge conveyor can, for example, be displayed both on the camera screen on the operator’s stand and on the metering panel forthe ground personnel.
A WIRTGEN GROUP COMPANY
W 380 CR(I)MACHINE OPERATION
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Operator panel concept
Front load,operator straight
Spray systemConveyor control
Machine speed
Main switch
Dosing panel
Example dosing panel at ground operator position
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Dosing panel
Example dosing panel at ground operator position
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A WIRTGEN GROUP COMPANY
W 380 CR(I)JOB SITE EXAMPLES
Job site examples – San Francisco
Job site examples – San Francisco
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Job site examples – San Francisco
Job site examples – San Francisco
Job site examples – South Carolina
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Job site examples – South Carolina
Job site examples – South Carolina
Rear load application with high production up to 875 t/h• Pre-milling with standard mill
for variable cutting width –windrow in front of CR
• Picked up by CR, milled and mixed with main pass
• Pave with Vögele in one width• Production example:
14.5ft x 8” x 22ft /min = 212.7ft³/min
Density: 129# per cu ft= 814.7 tons per hour
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Recycling Performance
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Job site examples – North Carolina
Job site examples – FDR with cement
Job site examples – North Carolina
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Job site examples – North Carolina
FDR with Cement
11.5’ wide12” deep41 feet/ min120#/CF density
=+1000 tons per hour
Thank you for your Attention!
Mark Stahl Director, Recycling Products
Wirtgen America, Inc.6030 Dana WayAntioch, TN 37013T.: 615.501.0600 ext. 218M.:[email protected]/america
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