THE USE OF PULVERISED FUEL ASH IN LEAN CONCRETE ROADBASES. PART 3: FIELD STUDIES

This report is the third in a series that describes research to assess the performance of lean concrete roadbases modified by the addition of pulverised fuel ash (pfa). Field trials in which the performances of conventional lean concrete, a cement-rich concrete roadbase and ash-modified lean concrete were investigated confirmed earlier work on the modifications to the strength/age characteristics and the improved compactability brought about by the addition of PFA. In addition the trials showed that the development of thermal cracking in concrete roadbases was dependent on the early strength of the material. Trafficking the roadbases when they were seven days old showed that provided the materials met current specifications for cement-bound roadbases no additional cracking should occur as a result of the trafficking. It was concluded that ash-modified lean concrete may, with advantage, be used as a replacement for conventional lean concrete providing it meets existing specifications for cement-bound roadbases. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03051315
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • POTTER, J F
  • SHERWOOD, P T
  • O'CONNOR, MGD
• Publication Date: 1985

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 16 p.
• Serial:
  • Supplementary Report
  • Publisher: Transport and Road Research Laboratory (TRRL)
  • ISSN: 0305-1315

Subject/Index Terms

• TRT Terms: Base course (Pavements); Cement; Cement treated soils; Cracking; Field tests; Fly ash; Lean concrete; Performance; Pulverized fly ash; Strength of materials; Thermal stresses
• Uncontrolled Terms: Cement treated bases
• Old TRIS Terms: Lean mix concrete; Pulverized fuel ash; Thermal fracture; Trafficking
• ITRD Terms: 4758: Cement; 5211: Cracking; 4580: Fly ash; 6226: In situ; 4761: Lean concrete; 2961: Roadbase
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00451405
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: SR 842
• Files: ITRD, TRIS, ATRI
• Created Date: May 31 1986 12:00AM