EPOXY-RESIN-BASED CHEMICAL STABILIZATION OF A FINE, POORLY GRADED SOIL SYSTEM

Results are described of a research effort on the epoxy-based treatment of fine, poorly graded soil found at some localized low-duty airport sites and in the north slopes of Alaska. Statistical models are developed for the stabilization of clay-silt pavement systems at low-duty airports. A nontraditional method of soil stabilization that improves the subgrade strength properties of poorly graded clay-silt was identified. This soil system is considered one of the most difficult soil types to stabilize, in part because of its poor particle size distribution. Among several organic additives tested, the two-part epoxy system--bisphenol A/epichlorohydrin resin plus a polyamide hardener--gave the best result as measured by the dry California bearing ratio (CBR) test. The choice of the dry CBR test performed to ASTM specification was motivated by a need to capture optimum moisture content as an experimental variable. Within the limits of the laboratory test conditions, the statistical regression models developed support the hypothesis that the marginal increase in CBR values caused by a 1% increase in epoxy resin application is 11.1 and the marginal degradation of CBR caused by a 1% increase in moisture level in -5.6. Also, only additive level, moisture content, and temperature are significant variables influencing soil strength.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1991/1295/1295-012.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=EPOXY-RESIN-BASED+CHEMICAL+STABILIZATION+OF+A+FINE%2C+POORLY+GRADED+SOIL+SYSTEM&author=E.+Jones&author=A.+Ajayi-Majebi&author=W.+Grissom&author=L.+Smith&author=E.+Jones&publication_year=1991
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1295, Soil Stabilization 1991. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Jones, E E
  • Ajayi-Majebi, Abayomi
  • Grissom, William A
  • Smith, L Shelbert
  • Jones, Eugene E
• Publication Date: 1991

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 95-108
• Monograph Title: Soil stabilization, 1991
• Serial:
  • Transportation Research Record
  • Issue Number: 1295
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Airport runways; Bearing capacity; California bearing ratio; Epoxides; Laboratory tests; Mathematical models; Moisture content; Regression analysis; Silty clays; Soil stabilization; Soils; Subgrade (Pavements)
• Geographic Terms: Alaska
• Old TRIS Terms: Epoxy; Poorly graded soils; Soil bearing capacity
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Pavements; I42: Soil Mechanics;

Filing Info

• Accession Number: 00611905
• Record Type: Publication
• ISBN: 030905074X
• Files: TRIS, TRB
• Created Date: Aug 31 1991 12:00AM