• Title/Summary/Keyword: 수중양생온도 시간변화

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Strength Characteristic according to the 80℃ Water Curing Time Variation of the Ternary System Inorganic Binder (3성분계 무기결합재의 80℃ 수중양생 시간변화에 따른 강도특성)

  • Lee, Jin-Woo;Lee, Sang-Soo;Song, Ha-Young
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.05a
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    • pp.100-101
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    • 2014
  • The global warming because of the CO2 emission and solution about this emerge as the international enviroment problem. Particularly, it is the absolutely it is needed for reducing the CO2 in the cement industry and harmful material actual condition. And the construction of home and abroad and material manufacturers tries for the technology development for the carbon dioxide and harmful material reduction which the portland cement in manufacture is usually emitted along with the increase of concerns about the environment-friendly concrete and panel. Therefore, in this research, the compressive strength of the inorganic binder and flexural strength tries to be measured in order to draw the inappropriate high temperature cure time of the ternary system inorganic binder using the blast furnace slag, red mud, silica fumewhich is the industrial byproduct with the cement substitute material, and etc.

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A Study on the Effect of Accelerated Curing on 28-Days Compressive Strength of Concrete (촉진양생이 콘크리트의 28일 압축강도에 미치는 영향에 관한 연구)

  • 최세규;유승룡;김생빈
    • Magazine of the Korea Concrete Institute
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    • v.8 no.4
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    • pp.141-148
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    • 1996
  • The pulished works on Accelerated Curing Effect were generally performed around from 1960 to 1970th century for 18 to 24 hours - total curing periods. It is not possible to define the effect of temperature rise because those results were obtaine mainly by using the manually operated steam-curing tank. Thus, it may not be available to apply those data immediately on the domestic PC wall production line. The testing specimens were made from the standard mix proportion according to those of domestic PC factories to establish a basic data for the Accelerated Curing Effect. The experimental tests were conducted according to the conditions of each sub-curing periods. By comparing the results of compression tests on de-molded and 28-day water-curing specimens, we find that the most effective curing condition to obtain more than the required design strength after 28 day of water curing may be as follows: the presteaming period does not affect seriously and less than$30^{circ}C/hr$- the rate of temperature rise andless than $82^{circ}C$ - maximum temperature are necessary. It seems that post-curing procedure is very important factor to increase the effect of accelerated curing.