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A Study of the Cause of Deterioration of an Expanded Shale in Moist, Cyclic Freezing and Thawing Conditions

  • ID:

    985

  • ESCSI:

    4384.009

  • Author:

    Soles, James A.

  • Publication Name:

    (Canada) Mines Branch Investigation Report IR 70-16

  • Type of Publication:

    Paper

  • Publisher:

    (Canada) Department of Energy, Mines and Resources

  • Dated:

    1970

  • Issue/Volume:

  • Other ID:

  • Page(s):

    1-6

  • Reference List:

    Y
  • Abstract:

    A petrographic study and freeze-thaw tests were made on an expanded shale concrete aggregate to determine the cause of its instability in moist, freezing and thawing conditions.The investigation indicated that some aggregate particles are permeable and entrap free water, which expands upon freezing and causes spalling of concrete. No deleterious expansible minerals were detected in the bloated aggregate.