|Lead Organization:||Iowa Department of Transportation|
|Partners:||FHWA, IADOT, KS, NY, WA|
|Contractor(s):||Center for Transportation Research and Education (CTRE)|
|Est. Completion Date:|
|Last Updated:||Jun 27, 2013|
|Contract End Date:|
|Total Commitments Received:||$155,000.00|
|100% SP&R Approval:||Approved|
|Organization||Year||Commitments||Technical Contact Name||Funding Contact Name||Contact Number||Email Address|
|Federal Highway Administration||2004||$100,000.00||Suneel Vanikar||Sharon Smithfirstname.lastname@example.org|
|Iowa Department of Transportation||2004||$5,000.00||Jim Berger||Linda Narigon||Linda.Narigon@iowadot.us|
|Kansas Department of Transportation||2004||$5,000.00||January Corn||Rodney Montneyemail@example.com|
|New York State Department of Transportation||2004||$40,000.00||Julian Bendana||Gary Frederickfirstname.lastname@example.org|
|Washington State Department of Transportation||2005||$5,000.00||Jeff Uhlmeyer||Leni Oman||360-705-7974||OmanL@wsdot.wa.gov|
In finished PCC pavements, over-consolidation may occur if the mix is not properly designed. Over-consolidation is noted when longitudinal trails can be visually observed in the surface. These "vibrator trails" run parallel to each other with spacing similar to that of the vibrators on pavers. Cores taken from vibrator trails have revealed many instances where the hardened concrete contains less than 3% air, rather than 6%-7% as designed, thus significantly reducing concrete freeze-thaw durability. Although measures can be taken to monitor the frequency of vibrations, vibrations are still inevitable. It would be a revolutionary advancement in paving technology if the vibration of pavement concrete could be eliminated.
The goal of the proposed research is to develop a new type of self-consolidating concrete (SCC) for slip form paving. It is envisioned that SCC will produce more workable concrete and smoother pavements, better consolidation of the plastic concrete, and higher rates of production.
Based on the promising results of Phase I, additional study is proposed to refine the mix design of SCC for slip-form paving and apply the new SF SCC in the field. The research team believes that a desirable balance between compactibility and green strength or shape-holding ability of a concrete mixture may be achieved by carefully balancing concrete materials and mix design. The new SF SCC will (1) be workable enough for machine placement, (2) be self-compacting with minimum segregation, (3) hold shape after extrusion from a paver, and (4) have performance properties (strength and durability) compatible to current pavement concrete.
Phase I, the feasibility study, has been completed. New participants are needed for phase 2 of the project - the field study. For more information, see the Phase 2 Work Plan. $30,000 total commitment requested over 2-3 years. Lesser contributions can be considered. Travel for TAC members will be paid from the pooled fund.
Subjects: Materials and Construction Pavement Design, Management, and Performance
|Phase II Final Report||TPF-5(098)_SCC_Phase_2_final_report.pdf||Final Report||Public|
|Acceptance Memo||(098) SCC project Pooled Fund acceptance memo.pdf||Memorandum||Public|
|Quarterly Report: April - June 2010||6-30-10 qtr rep tpf5 098.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending June 30, 2011||TPF-5(098) Quarterly Report_Apr11 - Jun11.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending March 31, 2011||quarterly_report_03-31-11.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending March31, 2009||quarterly_report_03-31-09.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending December 31, 2009||quarterly_report_12-31-09.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending December 31, 2008||quarterly_report_12-31-08.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending June 30, 2008||quarterly_report_06-30-08.pdf||Quarterly Progress Report||Public|
|Quarterly Report: Ending March 31, 2006||quarterly_report_3-31-06.pdf||Quarterly Progress Report||Public|
|Phase II work plan||work_plan.pdf||Work Plan||Public|
|Self-Consolidating Concrete--Applications for Slip Form Paving (Phase 1)||http://www.cptechcenter.org/projects/reports.cfm||Other||Public|