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Lee, B., Kim, G., Nam, J., Cho, B., Hama, Y., & Kim, R. (2016). Compressive strength, resistance to chloride-ion penetration and freezing/thawing of slag-replaced concrete and cementless slag concrete containing desulfurization slag activator. Construction and Building Materials, 128, 341-348. | |||||
작성자 | 관리자 | ||||
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조회수 | 160 | 등록일 | 2016.12.15 | ||
주저자 | Bokyeong Lee | ||||
교신저자 | 042-821-7731 | ||||
공동저자 | GyuyongKim, Jeongsoo Nam, Bongsuk Cho, Yukio Hama, Raehwan Kim | ||||
학술지명 | Construction and Building Materials | ||||
abstract
In this research, desulfurization slag (DS), a byproduct generated during steel production, was used as an activator for ground granulated blast-furnace slag (GGBS), and the compressive strength, resistance to chloride-ion penetration and freezing/thawing of slag-replaced concrete and cementless slag concrete containing DS activator was evaluated. The experimental results indicated that DS affects the strength development of slag-replaced concrete and cementless slag concrete when used as an activator. Moreover, a constant increase in the compressive strength was observed during the long-term aging of cementless slag concrete with a DS and anhydrous gypsum mixture. However, the transformation of ettringite to monosulfate was not effective; a large quantity of ettringite was observed at a long-term age of 910 days in the cementless slag concrete. In addition, a high resistance to chloride-ion penetration was obtained for high-volume slag concrete. The resistance to chloride-ion penetration was greater in cementless slag concrete. On the other hand, cementless slag concrete, which had a high volume of capillary pores, had the lowest resistance to freezing/thawing. |