Carbonation of Concrete Incorporating Fly Ash or a Chemical Admixture

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Title: Carbonation of Concrete Incorporating Fly Ash or a Chemical Admixture

Author(s): D.W.S. Ho and R.K. Lewis

Publication: Special Publication

Volume: 79

Issue:

Appears on pages(s): 333-346

Keywords: accecontent; compre curing; fly ash workability. lerated tests; admixtures; carbonation; cement ssive strength; . . concrete durabi lity; concretes; ; water-cement ratio; water-reducing agents;

Date: 5/1/1983

Abstract:
Straight Portland cement concrete and other concretes containing fly ash or a chemical water-reducing agent were investigated for the rate of carbonation. Results have indicated that concretes having the same strength and water/cement ratio do not necessarily show the same rate of carbonation. For a strength level of 25 MPa, concrete containing fly ash carbonated 50% faster than the straight Portland cement concrete.