357-10
Evaluation of Concrete Grinding Residue Application On Roadside Soil Properties and Vegetation.

Poster Number 1208

Wednesday, November 6, 2013
Tampa Convention Center, East Hall, Third Floor

Ana B. Wingeyer1, Dennis L. McCallister1, Martha Mamo1, Walter Schacht2 and Pamela J Sutton1, (1)University of Nebraska - Lincoln, Lincoln, NE
(2)Agronomy and Horticulture, University of Nebraska - Lincoln, Lincoln, NE
Diamond grinding of highway surfaces is a one-time maintenance operation to extend the highway surface life. Concrete grinding residue (CGR) is the byproduct of diamond grinding and has high pH, calcium, potassium, magnesium, and sodium concentrations and small particle size. CGR slurry typically having a pH of 11-12 may have negative effect if applied to existing vegetation as well as on soil physical conditions. No reports in the literature have been identified that evaluated short- and medium-term effects of CGR application to in-situ soil properties or existing roadside vegetation in Nebraska. Thus research to determine the effect of one-time application of different CGR rates to roadside soil properties and existing vegetation is needed. Results of vegetation and soil responses to CGR roadside application at 0, 5, 10, 20, 40 tons/acre will be reported.
See more from this Division: ASA Section: Environmental Quality
See more from this Session: Environmental Quality General Session: II

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