Field Assessment and Mitigation of Potential Environmental Impacts of Portland Cement Concrete Highway Grindings

Very little information is currently available on the environmental impact of highway grindings that result form re-surfacing activities associated with Portland Cement Concrete (PCC) highways. Data should be collected regarding the impact of PCC grinding slurry on soil pH and on soil metal concentrations in the receiving area compared to "native" or non-impacted soils. Since it is believed that the greatest potential for negative environmental impact may be pH related, the proposed study will also focus on developing a mitigation strategy that would include an evaluation of using compost to neutralize the alkaline pH of grinding slurry. The primary objectives are to define the impact of PCC highway grinding slurry on soil pH in disposal areas and investigate efficient and affordable methods to neutralization slurry pH prior to or during disposal.


    • English


    • Status: Completed
    • Contract Numbers:


    • Sponsor Organizations:

      Federal Highway Administration

      1200 New Jersey Avenue, SE
      Washington, DC  USA  20590
    • Project Managers:

      Anderson, Keith

    • Performing Organizations:

      Washington State University, Pullman

      Washington State Transportation Center
      Pullman, WA  USA  99164
    • Principal Investigators:

      Loge, Frank

      Yonge, David

    • Start Date: 20010701
    • Actual Completion Date: 20040604
    • Source Data: RiP Project 12470

    Subject/Index Terms

    Filing Info

    • Accession Number: 01458329
    • Record Type: Research project
    • Source Agency: Washington State Department of Transportation
    • Contract Numbers: T2696-05
    • Files: RiP, USDOT, STATEDOT
    • Created Date: Jan 3 2013 12:40PM