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A Study of the Strength and Durability Properties on Recycled Aggregate Concrete and Blain of Blast Furnace Slag

고로슬래그의 분말도 및 순환골재 치환율에 따른 콘크리트의 강도 및 내구적 특성에 관한 연구

  • Published : 2007.12.20

Abstract

Furnace slag powder used currently in Korea needs to add special functions in response to the increase of large-scale projects. In addition, it is advantageous in that it has a lower hydration heat emission rate than ordinary Portland cement and improves properties such as the inhibition of alkali aggregate reaction, watertightness, salt proofness, seawater resistance and chemical resistance. However, furnace slag powder is not self -hardening, and requires activators such as alkali for hydration. Accordingly, if recycled fine aggregate, from which calcium hydroxide is generated, and furnace slag, which requires alkali stimulation, are used together they play mutually complementary roles, so we expect to use the mixture as a resource-recycling construction material. Thus the present study purposed to examine the properties and characteristics of furnace slag powder and recycled aggregate, to manufacture recycled fine aggregate concrete using furnace slag and analyze its performance based on the results of an experiment, to provide materials on concrete using furnace slag as a cement additive and recycled fine aggregate as a substitute of aggregate, and ultimately to provide basic materials on the manufacturing of resource-recycled construction materials using binder and fine aggregate as recycled resources.

Keywords

References

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  2. Effect of Anhydrite on the Mechanical and Durability Properties of High Volume Slag Concrete vol.2, pp.3, 2014, https://doi.org/10.14190/JRCR.2014.2.3.239