Monitoring and analysis of data obtained from moisture temperature recording stations : research implementation plan.

Details

• Creators:
  Figueroa, J. Ludwig
• Corporate Creators:
  Case Western Reserve University. Department of Civil Engineering
• Corporate Contributors:
  Ohio. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Asphalt concrete
  • Pavement design
  • Flexible pavements
  • Nondestructive tests
  • Subgrade (Pavements)
  • Asphalt concrete pavements
  • Backcalculation
  • Data analysis
  • Design
  • Environmental factors
  More +
• Publication/ Report Number:
  FHWA/OH-2001/09
• Resource Type:
  Tech Report
• Geographical Coverage:
  Ohio
• Edition:
  Research implementation plan.
• Corporate Publisher:
  Case Western Reserve University. Dept. of Civil Engineering
• Abstract:
  Variations in the mechanical properties of materials of a flexible pavement affect its response to applied ; loads in the form of deflections, stresses and stains. The resilient modulus of asphalt concrete and of fine ; grained subgrade soil vary seasonally as a result of weather related elements such as temperature and ; rainfall. Knowing the expected variation of layer properties throughout the pavement’s service life will ; lead to more accurate pavement designs when analyzed with a mechanistic/empirical based design ; procedure. ; To study the variations in mechanical properties of the pavement layers due to environmental factors, ; nine recording stations were installed throughout Ohio to monitor asphalt, subgrade soil, and air ; temperature; subgrade soil degree of saturation; and rainfall under a research project entitled ; “Characterization of Ohio Subgrade Types”. The sites were selected to include statewide climatic ; variations and the most prevalent soil types (A-3, A-4, A-6, and A-7). One site was installed the fall of ; 1991. The remaining sites were installed the spring of 1992. The sites were monitored for a two and half ; year period under the initial project. Data retrieved from the stations with fine grained soil showed the ; degree of saturation for the most part was close to 100%, but varied from 80% to 100%. ; Further monitoring was needed to verify the initial observed trends in soil saturation and to improve initial ; developed relationships between air temperature and average pavement temperature.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/5735/dot_5735_DS1.pdf
• File Type:
  [PDF - 105.06 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:9a36b2314473b814124796d860aef12321e36a6ef7e864def9c4ed6ec9af533b