Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Rapid Evaluation Method for Blast Furnace Slag Fineness and Influence of Fineness on Properties of Cement Mortar

고로슬래그의 분말도 신속평가 및 분말도가 시멘트 모르타르의 특성에 미치는 영향

  • Received : 2018.02.13
  • Accepted : 2018.04.27
  • Published : 2018.05.30
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Abstract

In this research, regarding the type three blast furnace slag (BS) regulated by KS F 2563 and supplied to actual ready mixed concrete plant, the fineness on specification and actually measured fineness by Blain test were compared, and by applying the hydrometer method used for early prediction of concrete strength, the feasibility of the hydrometer method for acquisition inspection of BS was analyzed. Additionally, the influence of various fineness of BS on properties of cement mortar was also assessed. According to the experimental results of this research, correlation of fineness values between specification and actually measured data were not matched. In the case of the rapid evaluation method using hydrometer, a good relation was shown between the fineness data obtained from hydrometer and Blain test. furthermore, from the cement mortar properties test, there was a good relation was obtained between fineness data from rapid evaluation method by hydrometer and cement mortar properties, while there was no clear relation between fineness data from specification and cement mortar properties. Hence, as a qulity controlling method of BS fineness, a rapid evaluation method using hydrometer is suggested as a new method.

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References

  1. Jung, J., Jang, S., Choi, Y., Jung, S., & Kim, S. (2015). Effects of Limestone Powder and Silica Fume on the Hydration and Pozzolanic Reaction of High-Strength High-Volume GGBFS Blended Cement Mortars, Proceeding of the Korea Concrete Institute, 27(2), 127-136. https://doi.org/10.4334/JKCI.2015.27.2.127
  2. Park, J., Jung, S., Jo, M., Han, M., & Han, C. (2014). Engineering properties of mortar with the variation of blast furnace slag from different production areas, Proceeding of the Korea institute of building construction, 14(1), 206-207.
  3. Han, C. (1988). Study on the Early Estimation of Concrete Strength, A doctoral dissertation at Chungnam National University
  4. Kim, K., Shin, K., Lim, C., Nam, J., & Kim, M. (2010). Properties of Engineering and Durability Concrete with Fly-ash and Blast Furnace Slag in Normal Strength Level, Proceeding of the Korean Recycled Construction Resources Institute, 5(1), 103-110.
  5. Lee, J., Kim, M., Beak, C., Joo, E., Han, M., & Han, C. (2016). Analysis of a possible rapid assessment of blast-furnace slag fine particles with a liquid densimeter, Proceeding of the Architectural Institute of Korea, 36(2), 1005-1006.
  6. Han, C. & Joo, E. (2018). Feasibility analysis of rapid quality evaluation method for blast furnace slag using hydrometer (Will be published in March)
  7. Lee, J., Moon, B., Park, Y., Joo, E., Han, M., & Han, C. (2016). Effect of blast-furnace slag particle fineness changes on the engineering characteristics of mortar, Proceeding of the Korea institute of building construction, 16(2), 102-103.
  8. Lee, J., Kim, M., Hyun, S., Kim, Y., Han, M., & Han, C. (2017). Influence of Various Powder of OPC Received in Concrete Plant on Strength Characteristics of Cured Mortar, Proceeding of the Korea institute of building construction, 17(2), 115-116.