Lab Testing of New Stabilization Chemical to Prevent Sulfate Heaving

Heaving problems caused by a reaction between sulfates in the subgrade soil and the calcium found in lime and cement have caused heaving of the pavement due to a reaction between calcium (cement) from the subgrade stabilization, other minerals in the soil, and water to form a new mineral called ettringite. The objective of the laboratory testing was to determine if the Roadbond EN1 chemical will work with the subgrade soils on a specific construction project to reduce or eliminate heaving. It was concluded that adding the Roadbond EN1 product to the subgrade stabilization would not allow ODOT to significantly reduce the amount of cement, nor would it reduce the amount of expansion due to sulfates. Therefore, it is not recommended to use the Roadbond EN1 for subgrade stabilization on this project, as it appears there is no benefit to using it rather than using cement for subgrade stabilization.

  • Supplemental Notes:
    • The title given is from the documentation page. The title on the cover is "Evaluation of Roadbond EN-1 for Soil Stabilization on LAK-2-7.76."
  • Corporate Authors:

    Ohio Department of Transportation

    1980 West Broad Street
    Columbus, OH  United States  43223

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Narsavage, Peter
  • Publication Date: 2012-8


  • English

Media Info

  • Media Type: Web
  • Edition: Final Technical Summary
  • Features: Figures; Tables;
  • Pagination: 25p

Subject/Index Terms

Filing Info

  • Accession Number: 01449075
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/OH-2012/9
  • Contract Numbers: State Job No. 526980A
  • Created Date: Oct 10 2012 9:30AM