Field Evaluation of Geotextiles Under Base Courses [Supplement]

Details

• Creators:
  Scullion, Tom ; Chou, Eddie
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Clay Soils Cone Penetrometers Data Analysis Dynaflect Evaluation Falling Weight Deflectometers Field Studies Geotextiles Pavements Penetrometers Performance Soils Soil Stabilization

  More +
• Publication/ Report Number:
  FHWA/TX-86/+414-lF (Supplement)
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  Final: September 1982 - January 1986
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  This report describes a structural evaluation of two thin pavements which had a woven geotextile as a separator between base and subgrade. On both pavements Falling Weight Deflectometer and Dynamic Cone Penetration measurements were made. The FWD test was used to generate a load versus deflection plot for each pavement. The penetrometer indicated the layer strengths and effective base thickness. The pavement at the District 1 site consisted of a surface treatment and six inches of flexible base course over a poor clay subgrade. Analysis of the FWD deflection data indicated that the section containing the geotextile was statically stronger than the control section. The cone penetrometer readings indicated effective base thickness of the experimental section was almost 1.5 inches thicker than the control section. This implies that, even under this very light traffic loadings, the IA geotextile has prevented soil intrusion into the base course. The pavement at the District 21 site consisted of 1.5 inches of Hot Mix, 12 inches of flexible base over a lime stabilized subgrade. In analyzing the data from the experimental and control sections no significant differences in performance were found. It is concluded from this study that geotextiles are cost-effective in stabilizing lightly trafficked thin pavements over difficult subgrade. Further studies are required to determine where and when geotextiles can replace traditional soil stabilization procedures.
• Format:
  PDF
• Funding:
  2-8-83-414
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:eeed23c260a51dbf3bb2e82032ff1238161a2df1104a82d57f844a01db56e29bdd6da55f89007a18f82848202dcfe7444778166c9f406fcc7aa9035988965d3a
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86279/dot_86279_DS1.pdf
• File Type:
  [PDF - 1.89 MB ]