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

  • 제35권11호
  • /
  • Pages.147-154
  • /
  • 2019
  • /
  • 1226-9107(pISSN)
  • /
  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
권호 표지
DOI QR코드

DOI QR Code

보수재료로서 EVA 에멀젼과 고로슬래그 미분말 및 플라이애쉬를 혼입한 폴리머 시멘트 모르타르의 인장·접착특성

Tensile and Adhesive Properties of Polymer Cement Mortar with EVA Emulsion, Blast-Furnace Slag and Fly Ash as a Repair Material

  • Jo, Young-Kug (Department of Architectural Engineering, Chungwoon University)
  • 투고 : 2019.08.06
  • 심사 : 2019.10.18
  • 발행 : 2019.11.30
⟨ 이전 논문 다음 논문 ⟩

초록

The purpose of this study is to evaluate the effect of admixtures as blast-furnace slag(BF) and fly ash(FA) on tensile and adhesive properties of polymer cement mortar(PCM) with EVA emulsion. The test specimens are prepared with five polymer-cement ratio(P/C) and five admixture contents, and tested for tensile strength and adhesion in tension. From the test results, the tensile strength and adhesion in tension could be improved by an appropriate combination of P/C and admixture contents. In particular, the maximum of tensile strength of PCM with P/C 10% and BF content of 10% is 4.70MPa which is about 1.55 times higher than that of plain mortar, and about 1.22 times that of PCM that does not contain any mixture. The ratio of adhesion in tension to tensile strength of PCM with admixtures averaged 55.8%. It is also apparent that admixture contents of 5% or 10% could be proposed for improvement of tensile strength and adhesion in tension of PCM.

키워드

참고문헌

  1. Ohama, Y. (1995). Handbook of polymer-modified concrete and mortars, Properties and Process Technology, Noyes Publications, New Jersey, USA, 11-148.
  2. Jo, Y. (2009). Adhesion in tension of cement mortar to cement concrete substrates coated with polymer cement slurry. Journal of the Architectural Institute of Korea, 25(6), 123-130.
  3. Ohama, Y. (1998). Use of polymers for improvements in durability of reinforced concrete structures and their repairing works, Journal of Adhesion Society Japan, 24(8), 313-322.
  4. Ohama, Y. (1973). Study on properties and mix proportioning of polymer-modified mortars for buildings. Report of the Building Research Institute. 65, 100-104.
  5. Ohama, Y., Demura, K., Nagao, H., & Ogi, T. (1986). Adhesion of polymer-modified mortars to ordinary cement mortar by different test methods, Proceedings of an International Symposium Organized by RILEM, Paris, Chapman and Hall, London, 719-729.
  6. Ohama, Y. (1982). Adhesion durability of polymer-modified mortars through ten-year outdoor exposure, polymer in concrete, Proceedings of third International Congress on Polymers in Concrete, Vol.1, College of Engineering, Nihon University, Koriyama, Japan, 209-221.
  7. Jo, Y. (2019). A study on the improvement of adhesion in tension and flexure of polymer cement mortar depending on various test methods. Journal of the Korea Institute of Building Construction, 19(1), 47-57. https://doi.org/10.5345/JKIBC.2019.19.1.047
  8. Yoon, Y., Cho, S., & Kwon, S. (2019). Prediction equation for chloride diffusion in concrete containing GGBFS based on 2-Year cured results, Journal of the Korea Institute for Structural Maintenance and Inspection, 23(2), 1-9.
  9. Garbacz, A., & Sokolowska, J. (2012). Concrete-like polymer composites with fly ashes-Comparative study, Construction Building Materials, 38, 689-699. https://doi.org/10.1016/j.conbuildmat.2012.08.052
  10. Jo, Y. (2008). Basic properties of hybrid-type polymer cement slurry for the anti-corrosion of steel, Journal of the Architectural Institute of Korea, 24(9), 89-96.