Concrete Grinding Residue: Its Effect on Roadside Vegetation and Soil Properties

Diamond grinding of Portland Cement Concrete (PCC) highway surfaces, a maintenance operation carried out to extend the pavement service life, generates a high-pH and high alkalinity slurry (water, concrete and aggregate residue), referred to as Concrete Grinding Residue (CGR). The objective of the proposed research is to gain a stronger understanding of the CGR effects on soil, water infiltration, and vegetation through an in-situ, statistically rigorous study that will analyze inslope and/or backslope soil samples and assess soil and vegetation properties before and after placement of the CGR. Based on the study findings, Minnesota Department of Transportation's (MnDOT's) Office of Environmental Stewardship will: l) be able to better assess the need for soil amendments, either prior to or after CGR placement; 2) be in a better position to recommend possible changes to CGR slurry offloading or placement practices; and 3) be able to better assess the need for possible changes to inslope/backslope seed mixes.

    Language

    • English

    Project

    • Status: Active
    • Funding: $154996
    • Contract Numbers:

      99004 WO#20

    • Sponsor Organizations:

      Minnesota Department of Transportation

      395 John Ireland Boulevard
      St Paul, MN  United States  55155
    • Project Managers:

      Holdhusen, Bruce

    • Performing Organizations:

      Iowa State University, Ames

      Department of Civil, Construction and Environmental Engineering
      Town Engineering Building
      Ames, IA  United States  50011-3232
    • Principal Investigators:

      Ceylan, Halil

    • Start Date: 20160614
    • Expected Completion Date: 20190430
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01607917
    • Record Type: Research project
    • Source Agency: Minnesota Department of Transportation
    • Contract Numbers: 99004 WO#20
    • Files: RiP, STATEDOT
    • Created Date: Aug 24 2016 3:39PM