The SPS-2* pavement preservation pooled fund group will review by virtual meeting the most recent products of the pooled fund contractor and ACPA member NCE, says Larry Scofield. 

Some of the products to be reviewed and discussed include the following:

  • Evaluating the Impact of Initial Pavement Smoothness on Pavement Performance
  • Evaluating the Impact of Pavement Design Features on Pavement Performance
  • Evaluating the Impact of Joint Score on Pavement Performance
  • Evaluating the Change in Localized Roughness (ALR) Over Time and the Corresponding Distress Manifestation
  • Impact of Shoulder Type on Pavement Performance
  • Impact of Design Features on Load Transfer Efficiency
  • Joint Seal Failure Analysis

The SPS-2 preservation pooled fund, TPF 5[291], consists of seven states: Washington State DOT as the Lead State, Arizona, California, Colorado, Georgia, Kansas, and North Carolina. Of special note is that the Georgia DOT participated in the pooled fund and does not have an SPS-2 project, but they recognized the value of the findings to the concrete industry. 

Previous products of the pooled fund have been a comparison of SPS-2 actual performance to that predicted by PavementME, a review of the condition of the remaining test sections, and potential future preservation activities.

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* The Long Term Pavement Performance (LTPP) SPS-2 study, or Strategic Study of Structural Factors for Rigid Pavements, represents the most comprehensive set of concrete pavement performance data in the United States.