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Material Properties of Retested Specimens Composed of Tailings, Cement, and Blast-Furnace Slag.


PB97133276

Publication Date 1996
Personal Author Tesarik, D. R.; Seymour, J. B.; Lane, W. L.
Page Count 24
Abstract Four combinations of binder and cycloned tailings were cast into cylindrical specimen molds. The specimens were then tested in a servo-hydraulic loading frame to determine 28- and 90-day unconfined compressive strength and apparent modulus of deformation. The four mixes were cement and tailings; lead slag and tailings; cement, lead slag, and tailings; and cement, iron slag, and tailings. After various periods of additions curing, the specimens containing blast-furnace slag were retested up to three times. The objective of these tests was to quantify the benefits of adding slag to backfill mixes, measure strength gain or loss of retested specimens over time, and determine if slag can be substituted for cement without a loss in specimen strength. Results indicated that adding blast-furnace slag increased 28-day unconfined compressive strength for all mixes and modulus of deformation values for all but one mix. Some specimens exhibited increased strength and modulus values when they were retested at 356 days and again at 90 days after they were cast.
Keywords
  • Mines(Excavations)
  • Backfilling
  • Underground disposal
  • Mineral wastes
  • Slags
  • Mine tailings
  • Cements
  • Waste minimization
  • Lead ores
  • Iron ores
  • Binding agents
  • Compressive strength
  • Mechanical properties
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 48A - Mineral Industries
  • 68C - Solid Wastes Pollution & Control
Corporate Authors Department of Energy, Spokane, WA. Spokane Research Center.
Document Type Technical Report
Title Note Rept. of investigations/1996.
NTIS Issue Number 199708
Material Properties of Retested Specimens Composed of Tailings, Cement, and Blast-Furnace Slag.
Material Properties of Retested Specimens Composed of Tailings, Cement, and Blast-Furnace Slag.
PB97133276

  • Mines(Excavations)
  • Backfilling
  • Underground disposal
  • Mineral wastes
  • Slags
  • Mine tailings
  • Cements
  • Waste minimization
  • Lead ores
  • Iron ores
  • Binding agents
  • Compressive strength
  • Mechanical properties
  • Bureau of Mines
  • 48A - Mineral Industries
  • 68C - Solid Wastes Pollution & Control
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