Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Experimental Review on Application of Lightweight UHPC as Repair Mortar and Cement Panel

경량 UHPC의 보수용 모르타르 및 시멘트 패널로서의 활용 가능성에 대한 실험적 검토

  • Received : 2023.07.18
  • Accepted : 2023.08.03
  • Published : 2023.09.30
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Abstract

Various performances of ultra-high performance concrete (UHPC) applied with microplastics and expanded polystyrene (EPS) beads were evaluated. CompressIve and flexural strength, performance after ignition, flow-down in fresh state, and effective bond strength were evaluated. Designed weight of the cement panel with these mixtures was calculated based on the flexural strength. As a result of the experiments, it was confirmed that the EPS could reduce the density of UHPC with largest range. By maximum addition of EPS beeds, the density of UHPC decreased to 1300 kg/m3, and the compressive and flexural strengths for this mixtures were in ranges of 20-30 MPa and 15-20 MPa, respectively. On the other hand, lightest cement panel could be designed with UHPC having a density ranges about 2.0 g/cm3.

Keywords

Acknowledgement

본 연구는 2023년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신 사업(과제관리번호: 2021RIS-002)의 지원에 의해 수행되었습니다.

References

  1. Ahn, J.S., Moon, J.H., Pae, J.I., Kim, H.K. (2023). Microplastics as lightweight aggregates for ultra-high performance concrete: mechanical properties and autoignition at elevated temperatures, Composite Structures, 321, 117333.
  2. Bajaber, M.A., Hakeem, I.Y. (2021). UHPC evolution, development, and utilization in construction: a review, Journal of Materials Research and Technology, 10, 1058-1074. https://doi.org/10.1016/j.jmrt.2020.12.051
  3. Dixit, A., Dai Pang, S., Kang, S.H., Moon, J. (2019). Lightweight structural cement composites with expanded polystyrene(EPS) for enhanced thermal insulation, Cement and Concrete Composites, 102, 185-197. https://doi.org/10.1016/j.cemconcomp.2019.04.023
  4. Jeong, Y.U., Lim, G.H., Kang, Y.H., Jung, S.H., Kim, J.H. (2020). Preliminary study on development of high strength cement composites at 2,000 kg/m3 of specific weight, Journal of the Korean Recycled Construction Resources Institute, 8(4), 562-570.
  5. Jeong, Y.U., Oh, S.W., Cho, Y.K., Jung, S.H., Kim, J.H. (2021). Characteristics of compressive strength development of high strength cement composites depending on its mix design, Journal of the Korean Recycled Construction Resources Institute, 9(4), 585-593.
  6. Lee, D.K., Lee, D.K., Oh, J.H., Yoo, S.W. (2022a). Comparison of bond-slip behavior and design criteria of high strength lightweight concrete with compressive strength 50 MPa and unit weight 16 kN/m3, Journal of the Korean Recycled Construction Resources Institute, 10(2), 168-175.
  7. Lee, N., Pae, J., Kang, S.H., Kim, H.K., Moon, J. (2022). Development of high strength & lightweight cementitious composites using hollow glass microsphere in a low water-to-cement matrix, Cement and Concrete Composites, 130, 104541.
  8. Pyeon, S.J., Kim, G.Y., Lee, S.S., Nam, J.S. (2022). Hydration properties of high-strength cementitious composites incorporating waste glass beads, Journal of the Korean Recycled Construction Resources Institute, 10(1), 74-79.