Sulfates in Cement Clinker and Their Effect on Concrete Durability

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Title: Sulfates in Cement Clinker and Their Effect on Concrete Durability

Author(s): Jan Skalny, Vagn Johansen and F. M. Miller

Publication: Special Publication

Volume: 171

Issue:

Appears on pages(s): 625-632

Keywords: Cements; clinker; curing; ettringite; gypsum; sulfates; sulfate attack.

Date: 8/1/1997

Abstract:
It has been reported that the chemical/mineralogical composition of modern Portland-cement clinkers has changed in recent years to such a degree that cements made from them may lead to concrete durability problems even if such cement passed the applicable specifications. The effect of sulfur compounds in clinker on concrete deterioration due to delayed ettringite formation is cited as an example. In this paper, the relevant issues are briefly evaluated in light of available laboratory data and field experience.