Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation on Compressive Strength and Toughness Index of Lightweight Aggregate Concrete with Expanded Waste-glass Particles and Micro Steel Fibers

마이크로 강섬유로 보강된 폐유리 경량골재 콘크리트의 압축강도 및 인성지수 평가

  • Lee, Hye-Jin (Dept. of Architectural Engineering, Kyonggi University) ;
  • Kim, Hak-Young (Dept. of Architectural Engineering, Kyonggi University) ;
  • Yang, Keun-Hyeok (Dept. of Architectural Engineering, Kyonggi University) ;
  • Lee, Jae-Yun (Dept. of Architectural Engineering, Kyonggi University)
  • 이혜진 (경기대 건축공학과 일반대학원) ;
  • 김학영 (경기대 건축공학과) ;
  • 양근혁 (경기대 건축공학과) ;
  • 이재윤 (경기대 건축공학과 일반대학원)
  • Received : 2021.08.09
  • Accepted : 2022.05.10
  • Published : 2022.05.30
⟨ Previous Next ⟩

Abstract

The objective of this study is to examine the applicability of expanded waste-glass particles as an alternative for lightweight fine aggregates to produce lightweight aggregate concrete (LWAC) with a higher strength/weight ratio. The effectiveness of micro steel fibers was also investigated in alleviating the increased brittleness of LWAC due to the addition of the waste-glass particles. The main test parameters were the replacement ratio of the waste-glass particles for lightweight fine aggregates and the type (hooked-end and straight shapes) of micro steel fibers. Test results showed that LWAC containing the expanded waste-glass particles displays higher compressive strength than the conventional LWAC at the same unit weight, whereas compressive toughness index (Ic) of LWAC tends to decrease with the increase in the waste-glass particle content. At the same level of fiber reinforcing index, waste-glass LWAC reinforced with micro steel fibers exhibited higher Ic values than LWAC with the conventional macro steel fibers. Overall, the hybrid use of micro steel fibers with hooked-end and straight shapes could be considered positively in improving the toughness of LWAC containing the expanded waste-glass particles.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호 22NANO-C156177-03).

References

  1. ACI Committee 213 (2014). Guide for Structural Lightweight-Aggregate Concrete (ACI 213R-14). American Concrete Institute, MI, Farmington Hills, 53.
  2. ASTM C1018-97 (1998). Standard Test Methods for Flexural Toughness and First Crack Strength of Fiber Reinforced Concrete, American Society for Testing and Materials, West Conshohocken, PA, USA: ASTM International, 506-513.
  3. Balaguru, P. (1994). Contribution of Fibers to Crack Reduction of Cement Composites During the Initial and Final Setting Period. ACI Materials Journal, 91(3), 280-288.
  4. Cha, K. M., Choi, S. Y., Kim, I. S., & Yang, E. I. (2020). Analytical Study on Flexural Behavior of Concrete Member using Heavyweight Waste Glass as Fine Aggregate. Journal of the Korea Institute for Structural Maintenance and Inspection, 24(1), 88-96. https://doi.org/10.11112/JKSMI.2020.24.1.88
  5. Chandra, S., & Berntsson, L. (2003). Lightweight Aggregate Concrete: Science, Technology and Applications, USA: Noyes Publications, 78-81.
  6. Im, C. R., Yang, K. H., & Mun, J. H. (2020). Assessment on Maximum Longitudinal Reinforcement Ratios for Reinforced Lightweight Aggregate Concrete Beams. Journal of the Korea Concrete Institute, 32(5), 419-425. https://doi.org/10.4334/jkci.2020.32.5.419
  7. Ji, G. B., Mun, J. H., & Yang, K. H. (2019). Evaluation of Mechanical Properties of Lightweight Concrete Using Bottom Ash Aggregates and Foam. Journal of the Korea Concrete Institute, 31(4), 375-384. https://doi.org/10.4334/jkci.2019.31.4.375
  8. Kim, S. K., Jang, P. K., & Jang, I. Y. (2017). Material Behavior and Strength Character of 150 MPa Ultra High Strength Concrete Using LCD Glass Powder as Fine Aggregate. Journal of the Korea Concrete Institute, 29(6), 615-623. https://doi.org/10.4334/JKCI.2017.29.6.615
  9. Korea Agency for Technology and Standards. (2017). Standard Test Method for Concrete Slump, KS F 2402. Korean Standards Association, 1-4. (In Korean)
  10. Korea Agency for Technology and Standards. (2017). Portland Cement, KS L 5201. Korean Standards Association, 1-15. (In Korean)
  11. Korea Agency for Technology and Standards. (2017). Standard Test Method for Air Content of Fresh Concrete by the Pressure Method, KS F 2421. Korean Standards Association, 1-17. (In Korean)
  12. Korea Agency for Technology and Standards. (2017). Standard Test Method for Compressive Strength of Concrete, KS F 2405. Korean Standards Association, 1-7. (In Korean)
  13. Lee, K. I., Mun, J. H., Park, Y. S., &Yang, K. H. (2019). A Fundamental Study to Develop Low-CO High-Insulation Lightweight Concrete Using Bottom Ash Aggregates and Air Foam. Cement and Concrete Research, 31(3), 221-228.
  14. Lee, K. H., & Yang, K. H. (2018). Proposal for Compressive Strength Development Model of Lightweight Aggregate Concrete Using Expanded Bottom Institute of Korea Structure & Construction, 34(7), 19- 26.
  15. Lee, K. H. (2018). Reliable Model Proposals for Mechanical Properties and Mixing Proportioning of Lightweight Aggregate Concrete Using Expanded Bottom Ash and Dredged Soil Granules. Ph.D. Kyonggi University, 1-206.
  16. Liu, X., Wu, T., & Liu, Y. (2019). Stress-Strain Relationship for Plain and Fiber-Reinforced Lightweight Aggregate Concrete. Construction and Building Materials, 225, 256-272. https://doi.org/10.1016/j.conbuildmat.2019.07.135
  17. Okeh, C. A. O., Begg, D. W., Barnett, S. J., & Nanos, N. (2019). Behaviour of Hybrid Steel Fiber Reinforced Self-Compacting Concrete Using Innovative Hooked End Steel Fibers under Tensile Stress. Construction and Building Materials, 202, 753-761. https://doi.org/10.1016/j.conbuildmat.2018.12.067
  18. Sim, J. I., & Yang, K. H. (2010) Air Content, Workability and Bleeding Characteristics of Fresh Lightweight Aggregate Concrete. Journal of the Korea Concrete Institute, 22(4), 559-566. https://doi.org/10.4334/JKCI.2010.22.4.559
  19. Yang, K. H. (2019). Evaluation of Mechanical Properties of Lightweight Concrete Using Bottom Ash Aggregates. Journal of the Korea Concrete Institute, 31(4), 331-337. https://doi.org/10.4334/jkci.2019.31.4.331
  20. You, I. H., Jeong, C. J., Lyu, C. G., Lee, G. I., & Zi, G. S. (2017). State of Research on High Durable Concrete with Waste Glass Powder for Road Structure. Journal of the Korea Concrete Institute, 29(2), 32-37.