WisDOT projects.

Details

• Creators:
  Elhajjar, Rani ; Titi, Hani H. ; Van Dyke, Stacy ; Erfanian, Hamid
• Corporate Creators:
  University of Wisconsin--Milwaukee
• Corporate Contributors:
  Wisconsin. Dept. of Transportation. Research and Library Section ; Wisconsin Highway Research Program ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Geotextiles
  • Geosynthetics
  • Strength of materials
  • California bearing ratio
  • Pin Puncture test
  • CBR Puncture Test
  • Geotextile
  • ASTM D6241
  • ASTM D4833
• Publication/ Report Number:
  WisDOT ID no. 0092-15-07
• Resource Type:
  Tech Report
• Geographical Coverage:
  Wisconsin ; United States
• Corporate Publisher:
  Wisconsin. Department of Transportation
• Abstract:
  Geotextiles are commonly used in pavements, earth retaining structures, and landfills, as well as other geotechnical applications. Various ; tests are conducted to evaluate and classify geotextiles to determine their suitability for different applications. One of these tests is the puncture ; strength test. This test evaluates the ability of geotextiles to withstand stresses and loads during construction, which is among the severe conditions that ; geotextiles can experience. ASTM has recently replaced the standard pin puncture strength test, D4833, with the CBR puncture strength test, D6241. ; However, many departments of transportation (DOTs) throughout the country and the Federal Highway Administration still refer to D4833. Other state ; DOTs refer to both D4833 and D6241, or provide a list of alternative test methods to be considered in place of either of these tests. This inconsistency is ; the result of a missing connection between the old and new ASTMs. The objective of this research is to attempt to correlate the CBR and pin puncture ; strengths for various categories of geotextiles, regardless of weave type and mass per unit area. Subsequent to this, deterioration of geotextiles due to ; freeze‐thaw conditioning as well as Ultraviolet light exposure was investigated. Puncture resistances of materials with like mass per unit area and base ; material but with different weave type were also examined. Various types of geotextiles (nonwoven and woven) were subjected to testing in accordance ; with ASTM D4833 and ASTM D6241 standard procedures. In phase I, ten and fifteen samples of each geotextile type were tested using CBR and pin ; punctures strength tests, respectively, while a total of ten samples per geotextile type were tested in phase II. All types of geotextiles exhibited puncture ; strength values, whether pin or CBR, that were consistent within each group with coefficients of variation ranging from 2.8 and 41% for samples tested in ; phase I and II. It should be noted that distinct load‐displacement curves were exhibited within each material group. Statistical analyses were conducted ; to establish a correlation between CBR and pin puncture strength values. Correlations were successfully used to estimate the CBR puncture strength ; values from the pin test with a reasonable accuracy. In Phase III, an attempt was made to investigate the freeze‐thaw cycle effects on the geotextile ; fabric as well as UV light exposure effects. The freeze‐thaw conditioning showed minor levels of degradation on the puncture test. However, UV and ; weathering tests showed significant degradation in the puncture strength after exposure. Finally, we include a section in this report with recommended ; specifications for puncture load values based on the testing performed in this project in the spirit of providing a transition to the new ASTM D6241 ; puncture test standard.
  More +
• Format:
  PDF
• Funding:
  WHRP 0092-15-07
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32488/dot_32488_DS1.pdf
• File Type:
  [PDF - 8.89 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:5d99a0978f25a8fdb1472c2ade7ae595fe72b8b2100013c3b3db0c025d19d3b0