Todd LaTorella, Missouri/Kansas Chapter Executive-ACPA said the “Annual KDOT/Industry Technology Transfer Event”, held October 2-3, 2018 in Abilene, Kansas, was a big success. This event is part of a series of 6 events in 2018 that were planned to provide an overview of the U.S. Federal Highway Administration (FHWA)-managed “Long-Term Pavement Performance (LTPP) Specific Pavement Studies (SPS)-2 Study”, or Strategic Study of Structural Factors for Rigid Pavements and to evaluate SPS projects that began in 1992 in 14 states throughout the United States. According to a report by Larry Scofield, P.E., IGGA/ACPA, the LTPP SPS-2 study represents the most comprehensive set of concrete pavement performance data in the United States. Scofield has been studying and evaluating the SPS-2 pavements, and has prepared a brief report that shows some interesting details about the pavements that comprise the LTPP test sections.
Todd LaTorella’s October Abilene, KS event drew 40 officials from the Kansas Department of Transportation (KDOT), the Federal Highway Administration (FHWA), Kansas State University (KSU), City of Salina, and those in the industry. The group reviewed the performance of the The Long Term Pavement Performance Strategic Study of Structural Factors for Rigid Pavements ((LTPP) SPS-2 study: http://www.acpa.org/sps-2-tech-day-event-on-concrete-pavement-preservation/) concrete pavement test sections along a 2.5-mile stretch along I-70.
The purpose of the event was to evaluate the performance of the 13 individual test sections and the different design variables being showcased (PCCP thickness, PCCP strength, Base Type & Drainage Condition, & Edge Support Condition). Presentations and discussion followed the next morning regarding the next phase of the pooled fund study, which will look at preservation strategy performance/life. The event also included a reception/dinner at Mr. K’s Farmhouse in Abilene. To read more about the SPS-2 Study, please go to: http://www.acpa.org/sps2-scofield-0217/
TECH DAY BACKGROUND
In 2018, a series of six events were planned to provide an overview of the SPS-2 Study and to evaluate SPS projects throughout the United States. A workshop was held at each event to discuss the SPS-2 test sections and their performance to date; an update on current concrete preservation strategies; and a discussion of the national pooled fund experiment to piggy back onto the existing SPS-2 experiment. Upon conclusion of the workshop, participants review the 18 to 26 year old test sections in the field. The original SPS-2 experiment was established to evaluate five design features: (1) Thickness: 8” & 11”, (2) Flexural Strength: 550 psi & 900 psi, (3) Travel Lane Width: 12’ & 14’, (4) Base Type: Aggregate Base, Lean Concrete Base, & Permeable Asphalt Treated Base, (4) Drainage: drained and undrained.
For the POWERPOINT PRESENTATIONS from this Albeline, Kansas event, please go to:
- SPS-2 Concrete Test Sections – Lohman | Kowach
- Performance of Concrete Pavements – Mustaque Hossain | Kevin Senn
- KS-State Pavement Mgmt for Concrete Pavement Preservation-Rick Miller
- Kansas-Concrete Pavement Life Extension – Larry Scofield
- 25-Year Performance of SPS-2 Projects in Kansas – Mustaque Hossain
- SPS-2 -What Is It? – Dave Meggers
The 6 2018 events locations:
Bismarck and Fargo, North Dakota – October 16-17th
Abilene, Kansas – October 2nd-3rd
Pleasant Hill, Iowa – May 30th
Ritzville, Washington – May 2nd
Denver, Colorado – March 23rd
Phoenix, Arizona – Feb. 21st
Additional Reports:
Comparison of PavementME and Actual Performance (12-6-17)
Pooled Fund Phase I Report Final (02-08-17)
To download all presentations from the 6 2018 events, please go to: http://www.acpa.org/sps-2-tech-day-event-on-concrete-pavement-preservation/
For the report and Scofield’s findings titled “Report Offers Insights into SPS-2 Concrete Pavements”, please go to: http://www.acpa.org/sps2-scofield-0217/
SPS-2 RESOURCE CENTER; Virtual Tour of SPS-2 sections; & Links:
What started as a web page to inform the concrete pavement community about a series of tech transfer events held earlier this year has evolved to a comprehensive resource center, thanks to the efforts of Larry Scofield, ACPA Chapter Executives, subject matter experts, and ACPA staff. The resource center documents concrete pavement sections in six states that are part of the Long-Term Pavement Performance (LTPP) Strategic Study of Structural Factors for Rigid Pavements—SPS-2 study. This page is:
• A link that allows visitors to take a virtual tour of SPS-2 sections in Kansas—Rick Miller, Kansas DOT
• The video player with robust features that allow a thorough study (and data capture) of the Kansas SPS-2 sites
• Resource center also includes overview information and links to background information about the SPS-2 study
• Links to presentations about the pavements featured in the SPS-2 Tech Day programs
• Field layouts for each of the showcased sections
Larry reports the sections range in age from 18 to 26 years old, and adds that plans are in the works to pursue a seventh SPS-2 site soon. For the SPS-2 Resource Center, please go to: http://www.acpa.org/sps-2-tech-day-event-on-concrete-pavement-preservation/