Carbonation of Concrete with Low-Calcium Fly Ash and Granulated Blast Furnace Slag: Influence of Air-Entraining Agents and Freezing-and-Thawing Cycles

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Title: Carbonation of Concrete with Low-Calcium Fly Ash and Granulated Blast Furnace Slag: Influence of Air-Entraining Agents and Freezing-and-Thawing Cycles

Author(s): A. M. Paillere, M. Raverdy, and G. Grimaldi

Publication: Special Publication

Volume: 91

Issue:

Appears on pages(s): 541-562

Keywords: air-entraining agents; blast-furnace slag; carbonation; concretes; fly ash; freeze-thaw durability; mortars (material); strength.

Date: 2/1/1986

Abstract:
Carbonation of concrete is increased in the presence of a high percentage of granulated blast-furnace slag in the cement and is also enhanced after subjecting concrete to freezing and thawing cycles. Air entraining agents do not modify the carbonation when the concrete containing portland or cements with low-calcium fly ash and granulated blast-furnace slag (< 20 X) is subjected to freese-thaw cycles. Carbonation is increased in the cement containing 84 % of slag. Uncarbonated concrete resists freezing and thawing better than that carbonated previously.