Your SlideShare is downloading. ×
0
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Two-Lift Paving - Pavement Equipment Suppliers
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Two-Lift Paving - Pavement Equipment Suppliers

240

Published on

A Two-Lift concrete Paving (2LCP) workshop was organized as a part of the Texas Department of Transportation (TxDOT) project 0-6749: Feasibility Study of Two-Lift Concrete Paving (2LCP). This workshop …

A Two-Lift concrete Paving (2LCP) workshop was organized as a part of the Texas Department of Transportation (TxDOT) project 0-6749: Feasibility Study of Two-Lift Concrete Paving (2LCP). This workshop was conducted at the J. J. Pickle Research Campus (PRC), The University of Texas at Austin, Austin, TX on May 23rd, 2013. Dr. Jiong Hu, Texas State University, Research Supervisor, and Dr. David Fowler, The University of Texas at Austin, Co-Research Supervisor, co-chaired the workshop. The workshop offered the option of attending in person or remotely through webinar. Fifty-one attendees were present remotely or in person; 28 in person and 23 persons remotely.

Published in: Education, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
240
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
18
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. 1 Two-Lift Concrete Paving Equipment Perspective Two-Lift Paving Workshop University of Texas 23 May 2013
  • 2. 2 Two-Lift Concrete Paving  Two-Lift Paving idea has been around for decades.  GOMACO did tests to insert dowels into two layer concrete in early 1990 through about 1996 while working on development of paver to produce two-lift pavement with single machine.  In late 1993 two-lift demonstration for European style pavement in Detroit using a two paver process.  European opportunities for single machine two-lift pavers.  Two-Lift paving using “Smog Eating Concrete” in 2011  Next up is the Illinois Toll Way project.
  • 3. 3 Two-Lift Concrete Paving  Founder of GOMACO filed the first patent in January 1976  Abstract: “A machine for concurrently laying a dual-layered cementitious composition on a base surface with the layers having different compositions.”  “EconoCrete” was the anticipated market.
  • 4. 4 Two-Lift Concrete Paving Machine design included two paving chambers for the two different layers of material planned for the “EconoCrete” pavement design
  • 5. 5 Two-Lift Concrete Paving Cross section of machine patented at the time At that time, cost of producing two mix designs for a single project outweighs savings to be gained by using a lesser quality concrete on the bottom layer
  • 6. 6 Two-Lift Concrete Paving  With eye on European market, GOMACO began testing dowel insertion through two layers of concrete placed by single machine in early 1990s.  Developed vibration techniques for IDBI, bottom course structure as well as top course.
  • 7. 7 Two-Lift Concrete Paving
  • 8. 8 Two-Lift Concrete Paving
  • 9. 9 Two-Lift Concrete Paving
  • 10. 10 Two-Lift Concrete Paving  1993 two-lift project in Detroit  Two paver process, and two side delivery placers because of doweled and jointed construction  Surface was complete with high quality exposed aggregate. Referred to as European two-lift
  • 11. 11 Two-Lift Concrete Paving
  • 12. 12 Two-Lift Concrete Paving
  • 13. 13 Two-Lift Concrete Paving European 2-Lift paving spread  Conveys top lift concrete over the bottom layer paver  Inserts load transfer dowels into bottom layer  Places and vibrates top course after placing dowels
  • 14. 14 Two-Lift Concrete Paving
  • 15. 15 Two-Lift Concrete Paving  1997, GOMACO had opportunity to produce machine for two-lift paving on a project near Newport, Wales in the U.K.  CRCP pavement with “Whisper” surface top course  Single lane construction, 4-lane highway  Machine had ability to insert dowels in the pavement but never used on this project.
  • 16. 16 Two-Lift Concrete Paving
  • 17. 17 Two-Lift Concrete Paving  Contractor used continuous wet batch plant to produce both mix designs  Job site logistics (including public traffic) proved to be important consideration on the project  Two different types of trucks delivering materials for top and bottom course helps prevents mixing loads into the wrong layer
  • 18. 18 Two-Lift Concrete Paving
  • 19. 19 Two-Lift Concrete Paving
  • 20. 20 Two-Lift Concrete Paving
  • 21. 21 Two-Lift Concrete Paving
  • 22. 22 Two-Lift Concrete Paving  In 2004 Skanska purchases a 12 meter paver for producing two-lift pavements in Czech Republic (First project was paved at just over 10 Meters wide)  Paver was equipped with IDBI as well as two layer paving kit.  First paver ever working in Czech Republic on full 3D machine control  Contractor used two separate batch plants to produce material for two courses
  • 23. 23 Two-Lift Concrete Paving  Trucks delivered material in three lanes  Two outside truck lanes were for delivering bottom course material  Middle lane trucks were delivering the top course material  No stringlines present to hinder truck traffic
  • 24. 24 Two-Lift Concrete Paving
  • 25. 25 Two-Lift Concrete Paving
  • 26. 26 Two-Lift Concrete Paving 2-lift paving w/ “Smog Eating” Concrete Missouri DOT October 2011
  • 27. 27 Two-Lift Concrete Paving Research Project involving MoDOT, CPTech Center, FHWA, & EPA
  • 28. 28 Two-Lift Concrete Paving
  • 29. 29 Two-Lift Concrete Paving  Next up will be the Two-lift paving project being done by the Illinois Toll Way authority.  Open House on August 20th and 21st sponsored by the Illinois Toll Way and National Concrete Pavement Technology Center.
  • 30. 30 THANK YOU THE WORLD WIDE LEADER IN CONCRETE PAVING TECHNOLOGY Kevin L. Klein V.P. ENGINEERING / RESEARCH & DEVELOPMENT GOMACO CORPORATION 121 E. HWY 175, P.O. BOX 151 IDA GROVE, IOWA 51445 Klein@gomaco.com 1-800-831-2320

×