Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Effect of the Combination of Plasticizer and Viscosity Enhancing Agent on Engineering Properties of Dry Cement Mortar for an Ondol Floor

증점제 및 유동화제 조합이 온돌 바닥용 1회 미장 건조시멘트 모르타르의 공학적 특성에 미치는 영향

  • Kim, Jong (Dept. of Architectural Engineering, Cheongju University) ;
  • Han, Min-Cheol (Dept. of Architectural Engineering, Cheongju University) ;
  • Hwang, Yin-Seong (R＆D Center, Asia Cement CO., LTD.)
  • 김종 (청주대학교 건축공학과) ;
  • 한민철 (청주대학교 건축공학과) ;
  • 황인성 (아세아시멘트(주) 기술본부)
  • Received : 2022.03.16
  • Accepted : 2022.10.18
  • Published : 2022.11.30
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Abstract

The purpose of this study is to develop a single coat plaster finishing dry cement mortar (DM) for improving the workability and quality of DM for flooring. An effective admixture selection and mixing rate were determined to ensure high fluidity and material separation resistance, and the physical properties of DM for single coat plaster finished floors using it were reviewed. As a result of this experiment, the type and mixing rate of an appropriate plasticizer and viscosity enhancing agent having both high fluidity and material separation resistance were determined. A DM for single coat plaster finished floors premixed with this was developed. The developed DM for floors had high fluidity, which made it possible to improve workability, simplify the plastering process, and secure stable material separation resistance according to the fluctuation of the mixing quantity on site. It was verified that the compressive strength exceeded the quality standards of KS, and the length change rate was effective in reducing cracks due to the reduction in drying shrinkage caused by the reduction in W/DM.

Keywords

References

  1. Special Article. (2003). Korea Boiler Engineering Association, The only Ondol in the world, Monthly boiler engineering, 117(10), 118~122.
  2. Cho, D., & Kim, G. (2011). The Evaluation about the Basic Properties of Matter Change of Dry Mortar by Adding Water and the Curing Condition by the Time Progress. Journal of the architectural institute of Korea, 27(12), 115~122.
  3. Park, S., Hwang, Y., Lee, G., & Kim, J. (2021). Quality of Dry Cement Mortar for Floor Heating Depending on Water-to-Dry Mortar Rutio. Journal of the Korea Institute of Building Construction, 21(3), 181~188. https://doi.org/10.5345/JKIBC.2021.21.3.181
  4. Cho, D., Kim, G., & Miyauchi, H. (2012). Evaluation of the Basic Properties of Materials for Application of Functional Plaster Mortar. Journal of the Korea Institute of Building Construction, 12(2), 152~160. https://doi.org/10.5345/JKIBC.2012.12.2.152
  5. Cho, D., & Kang, J. (1996). Thermal Performance Improvement of Floor Heating System in Apartment Housing. Korea Institute of Civil Engineering and Building Technology Research Report, 1~213.
  6. Choi, W., & Kim, J. (2007). A Study on the Thermal Modelling Method of the Under-Floor Heating System in Apartment. Journal of the architectural institute of Korea, 23(4), 175~184.
  7. An, Y., Mun, K., Yoon, S., Lee, M., Song, Y., & Kim, Y. (2013). "Physical Properties of Finishing Mortar in Ondol Floor Using High-Calcium Fly Ash." Journal of Korea Society of Waste Management, 30(7), 660~669. https://doi.org/10.9786/kswm.2013.30.7.660
  8. Sho, K., & Park, S. (2012). Engineering Properties of Finishing Mortar Containing Fly Ash Produced in Combined Heat Power Plant, Journal of the Architectural Institute of Korea, 28(11), 141~148.
  9. Lee, K., Choi, Y., Lee, J., & Jung, W. (2008). Rheological properties of highly flowable mortar containing crashed sands, Proceeding of annual Conference of the Architectural Institute of Korea, 28(1), 559~562.
  10. Han, S., Hyun, S., Hwang, Y., Yoon, C., Han, M., & Han, C. (2021). The Characteristics of the Change in dry Contraction Length of Dry Mortar for Each Cosmetic Period using an Improved Durometer, Proceeding of The Korea Institute of Building Construction 22(2), 190~191.
  11. KS L 5220. (2018). Korean Industrial Standard, Dry ready mixed cement mortar, 1~5.