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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of Gypsum Content in Cement on Autogenous Shrinkage of Portland Blast-Furnace Slag Cement Concrete
Author(s): H. Tsuruta, H. Matsushita, K. Harada, and T. Goto
Publication: Special Publication
Appears on pages(s): 683-702
Keywords: autogenous shrinkage strain; degree of slag hydration; gypsum content; thermal expansion strain; transition from ettringite to monosulfate
Abstract:When low-heat portland blast-furnace slag cement is used, the thermal expansion strain of concrete shows reversal deformation in spite of the continuous temperature rising as the result of rapid autogenous shrinkage greater than the thermal expansion. In this study, the autogenous shrinkage strain was investigated in terms of gypsum con-tent in cement. It was possible to reduce the autogenous shrinkage by increasing the gypsum content in cement. Prevention of the early-age rapid hydration development of granulated blast-furnace slag at high temperature was also examined. Moreover, the amount of transition from ettringite to monosulfate of hydration product was deter-mined. As the result, it affected autogenous shrinkage of blast-fumace slag cement concrete significantly.
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