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An Experimental Study on Strength Properties of Concrete Using Blast-Furnace Slag Subjected to Freezing at Early Age
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 Title & Authors
An Experimental Study on Strength Properties of Concrete Using Blast-Furnace Slag Subjected to Freezing at Early Age
Choi, Sung-Woo; Ban, Seong-Soo; Ryu, Deuk-Hyun; Choi, Bong-Joo;
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 Abstract
Recently, to consider financial and constructive aspect usage of Admixture such as Blast-Furnace Slag and Fly-Ash, are increased. Also the use of cold-weather-concrete is increased. Blast-Furnace Slag, a by-product of steel industry, have many advantage to reduce the heat of hydration, increase in ultimate strength and etc. But it also reduces early-age strength, so it is prevented from using of Blast-Furnace Slag at cold-weather-concrete. In this study, for the purpose of increasing usage of Blast-Furnace Slag at cold-weather-concrete, it is investigated the strength properties of concrete subjected to frost damage for the cause of early age curing. The factors of this experience to give early frost damaged were Freezing temperature(-1, -10, ), Early curing age(0, 12, 24, 48hour), Freezing times(0, 12, 24, 48hour). According to this study, if early curing is carried out before haying frost damage, the strength of concrete used admixture, subjected to frost damage, is recovered. And that properties are considered, the effect of using admixture like blast-furnace-slag, is very high
 Keywords
blast-furnace slag;frost damage at early age;compressive strength;
 Language
Korean
 Cited by
 References
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