Lithologic Characterization of Active ITD Aggregate Sources and Implications for Aggregate Quality

Details

• Creators:
  Gillerman, Virginia S. ; Weppner, Kerrie N.
• Corporate Creators:
  Idaho Geological Survey
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Aggregates
  • Lithologic composition
  • Alkali silica reactions
  • Petrography
  • Concrete pavements
  • Geology
  • Research Hub
  • Lithologic composition
  • Aggregates
  • Concrete pavements
• Publication/ Report Number:
  FHWA-ID-14-212
• Resource Type:
  Tech Report
• Geographical Coverage:
  Idaho ; United States
• Corporate Publisher:
  Idaho. Transportation Department
• Abstract:
  Aggregate from 40 material sources across Idaho were sampled and the lithologies identified quantitatively. Aggregate compositions are compared with commercial AASHTO T 303 and ASTM C1293 results and the geologic map of Idaho to identify those rock types and geographic areas most susceptible to alkali-silica reactivity (ASR). Petrography on I-84 concrete and the commercial and experimental mortar bars confirmed the conclusion that rhyolites from young Snake River Plain (SRP) volcanism as well as certain “siliceous quartzites” in the mid-SRP region have very high ASR potential. However, much of Idaho has ASR reactive aggregate. The geographic regions with the most consistent, lowest ASR values in aggregate are in the Boise and Payette River drainages.
• Format:
  PDF
• Funding:
  RP212
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24955/dot_24955_DS1.pdf
• File Type:
  [PDF - 9.71 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:18c974b917401533d5a5fdfc6eb30cf20f220ea038945a34bf93ccce984aac9c