Expansive Soil Treatment Methods in Colorado

Details

• Creators:
  Ardani, Ahmad
• Corporate Creators:
  Colorado. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Swelling soils
  • Clay soils
  • Soil suction
  • Admixtures
  • Data collection
  • Encapsulation
  • Explosives
  • Loading and unloading
  • Measures of effectiveness
  • Questionnaires
  More +
• Publication/ Report Number:
  CDOT-DTD-R-92-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Description:
  This report reviews and summarizes the effectiveness of past expansive soils treatment methods used by Colorado DOT and other transportation agencies. Among the treatment methods evaluated were the following: Sub-excavation and removal of expansive soils and replacement with non-expansive soil; application of heavy applied load to balance the swelling pressure; preventing access of water to the soil by encapsulation; stabilization by means of chemical admixtures; mechanical stabilization; explosive treatment to correct swelling shales; pre-wetting the soil; and avoiding the expansive soil. A survey questionnaire was designed and sent to the District Materials Engineers to obtain their consensus on the treatment techniques used in Colorado. The results of this survey are presented in Part VIII of the report. The results of this study showed that the performance of some of the swelling soil treatment methods used in Colorado have been poor. As a result, initiation of the second phase of study is recommended. The ultimate goal of the second phase will be to establish up-to-date design guidelines that offer specific strategies for highway construction on swelling soils and swelling shales in Colorado.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93946/dot_93946_DS1.pdf
• File Type:
  [PDF - 1.43 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:cbafa2b86d5f3e90c0052a898034044032869c3501364c2a1713cd9d7db132493c72440dc23d25a482ff39a02aea3d1f34f0aed2a65eab333a08f9945e19f020