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Overcoming Constraints of Paving “Speedy” Whitetopping
Presented by
Ronald M. Guntert, Jr. President & CEO
Guntert & Zimmerman
Introduction
How to be Successful and FAST at Paving Concrete Over Asphalt or “Whitetopping”
• Get in, Get Out and Stay Out!• Get it Smooth• Get Rid of or Reduce the Constraints in the
Paving Process that Get in the Way of Finishing!
Introduction
On a typical short, cut up whitetopping project, there can more time spent on:
• Mobilization - loading preparation, loading and unloading, transport
• Maneuvering - walking around the site and• Width Change
than on actual paving!
G&Z has focused on dramatically reducing the time required on tasks other than paving
Days Consumed in a Small Overlay Project with Two Width Changes
9 Days
Mobilization22%
Width Change22%
Maneuvering11%
Paving45%
By Eliminating or Reducing Constraints We Speed to the Finish Line!
5.5 DaysMobilization
9%
Width Change9%
Maneuvering9%
Paving73%
What Are The Constraints to “Speedy” WhitetoppingMachine Constraints• Machine Profile• Machine Width Change• Machine Maneuvering • Machine Mobilization
Paving Constraints• Concrete Mix Design,
Uniformity & Strength Gain• Concrete Surface and
Edge Finishing• Concrete Plant Output &
Delivery• Sawing & Sealing
Operation• Corrective Action (Do it
Right the First Time!)
Machine Profile Physical Constraint to WhitetoppingPaver Profile• Room for Stringline /
Sensor Support Arms• Distance from Edge of
Pavement to Inner Most Point of Crawler Track
• Distance from Outer Most Point of Crawler Track / Machine
Machine Profile – Stringline on One or Both Sides
Machine Profile – “Stringless” or Single Stringline
Machine Profile – “Stringless” or Single Stringline – Milled Surface
Machine Profile – Single String Line Control / No String Line on Traffic Side
Machine Profile – Narrow Profile Machine Design and Single Stringline Control
Machine Equipped with G&Z’s Patented Triple Cross Slope Control
No String Line Required on The Traffic Side with G&Z’s Cross Slope Control
Patented
The Triple Cross Slope System includes Automatic Transition Control for Curves and Varying Cross Slope
“Stringless” Paving - Advantages
• String line takes up and extra approx. 2.5 ft. of room on each side of the paver.
• Once traffic gets past the paver and follow-up machines, this room is available to traffic.
• Setting stringline on overlay projects has a significant impact on total project cost
• Stringless smoothness has proven to be equal or better than the best stringline jobs even on zero blanking band jobs!
“Stringless” Major Players
• There are several major players in stringless technology namely Leica, Trimble and Topcon.
• The worldwide leader in concrete paving applications has been Leica to date.
Machine Profile – Stringless Control
Machine Profile – Stringless Control
Machine Profile – Stringless Control
Machine Profile – Stringless Control
Machine Profile – Stringless Control
Machine Profile – Zero Clearance or “Near Zero” Paving
Side Tie Bars Can Be A Constraint to Narrow Profile Paving
Dowel Bar Inserter Can Also Be Used While Narrow Profile Paving
Dowel Bar Inserter Can Also Be Used While Narrow Profile Paving
Dowel Bar Inserter Can Also Be Used While Narrow Profile Paving
Machine Width Change – Tractor and Paving Kit
Patent Pending
Machine Width Change - Tractor
• NEW (patent pending) Double Telescopic Tractor Frame allows the widest telescopic paving range in the Industry from 8 to 22 ft (2.5m to 6.7m) without the need of bolt-in tractor frame, hose, cable or walkway extensions.
• THIS RANGE COVERS MOST OF THE HALF WIDTH PAVING WIDTHS ENCOUNTERED IN THE MARKET
Machine Width Change - Tractor
NEW (patent pending) Tractor Frame Width Change Rollers & Hydraulic Clamping Pucks:
• Eliminates supporting tractor frame center module when telescoping tractor frame
• Eliminates loosening / tightening conventional clamping puck bolts during width change
Tractor FrameFully Extended –Hose Hinge not Shown
Machine Width Change - Tractor
Patent pending
Tractor Frame FullyContracted – HoseHinge Not Shown
Machine Width Change - Tractor
Patent pending
Machine Width Change - Tractor
Fuel Tank
Machine Width Change - Tractor(optional rollers and hydraulic clamping pucks shown)
Machine Width Change – TractorTelescopic Access Walkway
Machine Width Change – Tractor Telescopic Hose and Cable Hinge
Machine Width Change – Paving Kit“TeleEnds” Telescopic End Sections• G&Z’s Exclusive (Patent Pending) “TeleEnd” Paving
Kit telescopic end sections with 36” (915mm) of telescopic ability per side. The kit also includes enhanced Split Guillotine Sideforms.
Machine Width Change – Paving Kit“TeleEnds” Sections Description• Used in place of standard end sections• 36” (915mm) of telescopic capability on both sides
Machine Width Change
Hydraulic MotorPowered Rotary Actuator Mechanism For Steering Shown
Machine Maneuverability -90 Degree Steering Capability
Machine Maneuverability
“Flip of a Switch” 90 Degree Steering For Rapid Maneuvering
Machine Maneuverability
Machine Maneuverability
Machine Maneuverability320 Degree Track Control
Machine Maneuverability90º Steering
Machine Mobilization
Machine Mobilization“Smart Leg” Feature (Patent Pending)• “SmartLeg” feature with transducer feedback on
swing leg angle always keeps the crawler track “straight ahead” no matter where crawler track is relocated.
• Crawler track can be relocated while the machine is traveling or while stationary and crawler is off the ground and using provided stand.
• Jogging of swing leg can be controlled at ground level
Machine Mobilization(optional “SmartLeg” swing leg cylinder shown)
Patent Pending
No matter where the crawler is relocated withthe swing leg, the crawler track is kept in the “straight ahead” position.
Ground level control
Machine Mobilization“Smart Leg” for Track Repositioning
Optional “SmartLeg” Cylinder Shown
Rotary Actuator for Steering Shown
Patent Pending
Machine Mobilization“SmartLeg” feature used to re-position crawler while off the ground
Machine Mobilization“SmartLeg” Used for Transport• “SmartLeg” feature with transducer feedback on both
the swing leg and crawler track allows the swing legs to quickly and automatically go into the outboard / transport position once the swing leg cylinder is unpinned.
• Going from the working mode to transport mode can be done in less than 30 minutes!
90 Degree Steering / “Smart Swing Leg” –Loading Feature
Designed to Rapidly and Automatically Walk Into The Transport Position
Machine Mobilization“SmartLeg” Used for Transport
Machine Mobilization“SmartLeg” Used for Transport
Machine Mobilization“SmartLeg” Used for Transport
Machine Mobilization“SmartLeg” Used for Transport
Machine MobilizationManeuvering in the Transport Mode
Machine MobilizationManeuvering in the Transport Mode
Machine MobilizationManeuvering in the Transport Mode
Machine MobilizationLoaded on Transport Trailer
Machine MobilizationLoaded on Transport Trailer
All rights to reproduce any part of this presentation are at the sole
discretion of Guntert & Zimmerman Const. Div., Inc.
For additional information contact the Administrative Department at:222 E. Fourth St. Ripon, CA 95366
USAPhone (209) 599-0066 Fax (209) 599-
2021Email gz@guntert.com Web www.guntert.com
Thanks!
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