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:
  • Fly ash
  • Waste products (Materials)
  • Portland cement
  • Base course (Pavements)
  • Compressive strength
  • Freeze thaw durability
  • Thermal properties
  • Fly ash
  • Waste products
  • Portland cement
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• 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.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24321/dot_24321_DS1.pdf
• File Type:
  [PDF - 1.14 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bec3fb1dbd7e28e77eb15213ad62bf894d4eb32062d44d4bde3fdef6fd2db707dfa5f2c506bb6b89201e8bb476c04ba2b365c431bf72fe44369f9bad4e450efd