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:
  ASTM D4833 ASTM D6241 California Bearing Ratio CBR Puncture Test Geosynthetics Geotextile Geotextiles Pin Puncture Test Strength Of Materials
• 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.
  
  
• Format:
  PDF
• Funding:
  WHRP 0092-15-07
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:5d99a0978f25a8fdb1472c2ade7ae595fe72b8b2100013c3b3db0c025d19d3b0
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32488/dot_32488_DS1.pdf
• File Type:
  [PDF - 8.89 MB ]