A NEW METHOD FOR ASSESSING FROST DAMAGE IN NON-AIR ENTRAINED HYDRAULIC STRUCTURES. DURABILITY OF CONCRETE. G.M. IDORN INTERNATIONAL SYMPOSIUM, 1990 ANNUAL ACI CONVENTION, TORONTO, ONTARIO, CANADA

A survey of several 40- to 75-year-old, non-air entrained concrete dams indicated that in many cases, the concrete at the water line was not damaged due to freezing and thawing. This would appear to contradict conventional wisdom based on ASTM C 666 testing of non-air entrained concrete. Instead, most of the deterioration had taken place on the inclined downstream faces of the gravity sections, away from direct exposure to water, but subject to many cycles of freezing in air. As a result, it was decided to try and develop a one-sided freezing test, with the unfrozen side exposed to water and the freezing side exposed to air, to better simulate the field exposure. While the equipment for this test has been designed and built, testing is at a preliminary stage. The paper describes the nature of frost damage in hydraulic structures and then describes the new test procedure in detail.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 339-355

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Filing Info

  • Accession Number: 00622499
  • Record Type: Publication
  • Report/Paper Numbers: SP-131
  • Files: TRIS
  • Created Date: Jun 30 1992 12:00AM