The influence of fines on strength and drainage characteristics of aggregate bases.

Details

• Creators:
  Hoppe, Edward J
• Corporate Creators:
  Virginia Transportation Research Council (VTRC)
• Subject/TRT Terms:
  • Road drainage--Virginia
  • Runoff--Virginia
  • Aggregates (Building materials)--Virginia
  • Pavements--Subgrades--Virginia
• Publication/ Report Number:
  VTRC 96-R35
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Edition:
  Final report.
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  One of the most commonly used dense-graded aggregate mixes in Virginia is designated as Type 2lB. In an effort to improve drainage characteristics of the 21B material it was proposed to decrease the maximum allowable percentage of fines from 7% to 5% while retaining the existing percentage ranges for course particles. Prior to implementing this modification, the Virginia Department of Transportation (VDOT) conducted a series of laboratory tests to assess the potential impact of the revised material specifications. Samples of 21B aggregates produced by 19 quarries located throughout Virginia and North Carolina were analyzed. The results showed no statistically significant relationship between the percentage of times and the coefficient of permeability. It can be concluded that the proposed decrease in the maximum allowable percentage of fines from 7% to 5% would not result in a significant improvement in roadway drainage.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/19436/dot_19436_DS1.pdf
• File Type:
  [PDF - 1.51 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:29aacc6ca9f4af2a4721cdbde7d31e2bb398e1cc2ee9fb62a04a6b655e4764f5f8f3030b30404fc50cdb7680ad536c830f100f0727a1a64cff29fb201d504e59