Evaluation of fly ash in lean Portland Cement Concrete base "Econocrete".

Details

• Alternative Title:
  Evaluation of fly ash in lean Portland Cement Concrete base Econocrete
• Creators:
  Moussalli, Sam G.
• Corporate Creators:
  Iowa. Dept. of Transportation. Office of Materials
• Subject/TRT Terms:
  Base Course (Pavements) Compressive Strength Fly Ash Freeze Thaw Durability Portland Cement Thermal Properties Waste Products Waste Products (Materials)
• Publication/ Report Number:
  MLR-85-3 ; MLR-86-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa. Dept. of Transportation. Highway Division
• Abstract:
  Fly ash was used in this evaluation study to replace 30, 50 and 70
  
  percent of the 400 1bs. of cement currently used in each cu. yd. of
  
  portland cement econocrete base paving mix.
  
  Two Class "c" ashes and one Class "F" ash from Iowa approved sources
  
  were examined in each mix. When Class "c" ashes were used, they were
  
  substituted on the basis of 1.0 pound for each pound of cement removed.
  
  When Class "F" ash was used, it was substituted on the basis
  
  of 1.25 pounds of ash for each pound of cement removed.
  
  Compressive strengths with and without fly ash were determined at 7,
  
  28 and 56 days of age. In most cases, strengths were adequate.
  
  The freeze/thaw durability of the econocrete mixes studied was not adversely
  
  affected by the presence of fly ash.
  
  The tests along with erodibility and absorption tests have demonstrated
  
  the feasibility of producing econocrete with satisfactory mechanical
  
  properties even when relatively low quality and/or locally
  
  available aggregate is being used at no sacrifice to strength and/or
  
  durability.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bec3fb1dbd7e28e77eb15213ad62bf894d4eb32062d44d4bde3fdef6fd2db707dfa5f2c506bb6b89201e8bb476c04ba2b365c431bf72fe44369f9bad4e450efd
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24321/dot_24321_DS1.pdf
• File Type:
  [PDF - 1.14 MB ]