Frost Action on Immature Cement Paste-Effects on Mechanical Behavior

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Title: Frost Action on Immature Cement Paste-Effects on Mechanical Behavior

Author(s): Obada A. Kayyali, Christopher L. Page, and Alistair G. B. Ritchie

Publication: Journal Proceedings

Volume: 76

Issue: 11

Appears on pages(s): 1217-1226

Keywords: air entrainment; cement pastes; compressive strength; cracking (fracturing); freeze-thaw durability; hydration; mechanical properties.

Date: 11/1/1979

Abstract:
Application of a limited number of freezing and thawing cycles to cement paste at a very early stage of hydration induced effects that were not apparent for slightly more hydrated samples. Irreversible deterioration in strength and in fracture toughness were recorded. The effect of air entrainment, however, was shown not to be confined to retarding degradation caused by frost action. Early freezing of air-entrained paste actually had a beneficial effect on the final strength and fracture behavior of the material.