Evaluation of Fly Ash Quality Control Tools: Tech Summary

Details

• Creators:
  Rupnow, Tyson D.
• Corporate Creators:
  Louisiana Transportation Research Center
• Corporate Contributors:
  Louisiana. Dept. of Transportation and Development
• Subject/TRT Terms:
  Fly Ash Heat Heat Generation Quality Assurance Quality Control Set Time Time
• Publication/ Report Number:
  FHWA/LA.10/469
• Resource Type:
  Brief
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
• Abstract:
  Many entities currently use fl y ash in portland cement concrete (PCC) pavements and structures. Although the body of knowledge is great concerning the use of fl y ash, several projects per year are subject to poor performance where fl y ash is named as the culprit. Generally the “bad” projects arise due to: 1. Poor understanding of how fl y ash affects concrete pavement construction and performance or 2. A switch of fly ash sources midstream during the construction project. This project was initiated to develop tools for quality control purposes for as-delivered class C fl y ash. A good quality control tool would help contractors gain an understanding of the fl y ash, its variability, and how it may affect the resulting concrete.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ec553263a009a5ba0baa4c4d30172b92269daf6ef6e38e190acd35c892e8033f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20289/dot_20289_DS1.pdf
• File Type:
  [PDF - 128.23 KB ]