THE EFFECT OF FREEZE-THAW AND FROST HEAVING ON FLOWABLE FILL

Flowable Fill mixes were evaluated in the laboratory and field. Consideration was given to strength, flowability and time of set. Emphasis was placed on evaluating the freeze-thaw durability of typical Flowable Fill mixes. Flowable Fill mix criteria were established. Flowable Fill mix design and evaluation consisted of testing various combinations of concrete sand, wash wastes, crusher waste fines, an ASTM C 618 fly ash, a high carbon fly ash, air entraining admixtures, and Type II portland cement. Freeze thaw testing was done on selected mixes. Laboratory testing showed that high quality Flowable Fills could be made from almost any material. However, it was found that Flowable Fills made with 100% high carbon fly ash as the aggregate should be limited to an ash with an LOI less than 25% due to increased cement demand. Freeze thaw durability of Flowable Fill could not be effectively evaluated in the laboratory due to the high rate of freezing criteria of ASTM C 666. Recommended trial Flowable Fill mix designs are included in the report. Field testing of Flowable Fill consisted of evaluating the settlement, freeze thaw durability and frost heaving properties of selected mixes. Flowable Fill was found to have better settlement performance than granular fill when used to backfill a simulated bridge abutment on a very heavy loaded haul road in an aggregate plant. With the exception of the top two inches the freeze thaw durability was found to be very good even when the material was allowed to freeze prior to setting.

• Record URL:
  https://mm.nh.gov/files/uploads/dot/remote-docs/nhdot-research-x2712-1996-report.pdf
• Supplemental Notes:
  • Cover title: THE EFFECT OF FREEZE-THAW AND FROST HEAVE ON FLOWABLE FILL
• Corporate Authors:

  University of New Hampshire, Durham

  Department of Civil Engineering
  Durham, NH  United States  03824

  New Hampshire Department of Transportation

  Bureau of Materials and Research
  Box 483, 5 Hazen Drive
  Concord, NH  United States  03302-0483

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Gress, D
• Publication Date: 1996-10-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 106 p.

Subject/Index Terms

• TRT Terms: Air entraining cement; Backfilling; Bridge abutments; Field tests; Fills; Flowable fill; Fly ash; Freeze thaw durability; Frost heaving; Laboratory tests; Mix design; Permeability; Portland cement; Sand; Settlement (Structures); Wastes
• Old TRIS Terms: Backfills; Frost heave
• Subject Areas: Environment; Geotechnology; Highways; Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00734636
• Record Type: Publication
• Report/Paper Numbers: UNH Civil Eng #1096-1
• Contract Numbers: 93-8(X2712)
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 21 1997 12:00AM