KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Evaluation of the Strength Characteristics of ECC Based on Cement Replacement Ratios with Biochar

  • Received : 2024.06.25
  • Accepted : 2024.08.12
  • Published : 2024.10.01
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Abstract

This study presents fundamental research data on the application and utility of biochar in Engineered Cementitious Composites (ECC) for carbon sequestration. The study experimentally measures and compares the compressive strength, tensile strength, and flexural strength of high-toughness biochar-incorporated ECC (BE) and biochar-incorporated mortar (BM) with varying levels of biochar replacement. This study aims to compare BM and BE. BM shows an increase in mechanical properties at a biochar content of 1 %. BE shows an increase in mechanical properties at a biochar content of 2 %. The reason for the increase is that biochar particles fill the voids between the binder materials, acting as a filler. This helps form a denser structure. These findings suggest that incorporating biochar into mortar and ECC can enhance their mechanical properties at optimal biochar contents.

Keywords

Acknowledgement

This work was supported by the Ministry of Education of the Republic of Korea and the National Research Foundation of Korea (RS-2023-00248882).

References

  1. Brewer, C. E. (2012). "Biochar characterization and engineering." Ph.D. Thesis, Iowa State University, Ames, Iowa, USA.
  2. Choi, W. C., Yun, H. D. and Lee, J. Y. (2012). "Mechanical properties of mortar containing bio-char from pyrolysis." Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 16, No. 3, pp. 67-74.
  3. Gupta, S., Kua, H. W. and Koh, H. J. (2018). "Application of biochar from food and wood waste as green admixture for cement mortar." Science of the Total Environment, Vol. 619-620, pp. 419-435, https://doi.org/10.1016/j.scitotenv.2017.11.044.
  4. Gupta, S. and Kua, H. W. (2019). "Carbonaceous micro-filler for cement: Effect of Particle size and dosage of biochar on fresh and hardened properties of cement mortar." Science of the Total Environment, Vol. 662, pp. 952-962, https://doi.org/10.1016/j.scitotenv.2019.01.269.
  5. Han, S. M. and Choi, W. C. (2023). "Evaluation of the mechanical properties of cement mortar conatining wood-based bio-char." Journal of the Korea Concrete Institute, Vol. 35, No. 3, pp. 285-292, https://doi.org/10.4334/JKCI.2023.35.3.285 (in Korean).
  6. Javed, M. H., Sikandar, M. A., Ahmad, W., Bashir, M. T., Alrowais, R. and Wadud, M. B. (2022). "Effect of various biochars on physical, mechanical, and microstructural characteristics of cement pastes and mortars." Journal of Building Engineering, Vol. 57, No. 1, 104850, https://doi.org/10.1016/j.jobe.2022.104850.
  7. Jeong, Y. S., Kwon, M. H. and Seo, H. Y. (2015). "Torsional behavior of beams retrofitted by PVA-ECC." Journal of the Korean Society for Advanced Composite Structures, Vol. 6, No. 1, pp. 30-37, http://dx.doi.org/10.11004/kosacs.2015.6.1.030.
  8. Kim, S. W., Jeong, G. H., Hong, Y. J. and Kim, J. S. (2024). "Compressive strength characteristics of concrete and mortar according to wood-based biochar replacement ratio." Journal of the Korea Society for Advanced Composite Structures, Vol. 15, No. 1, pp. 18-25, https://doi.org/10.11004/kosacs.2024.15.1.018 (in Korean).
  9. KS L ISO 679 (2022). "Cement-test methods-determination of strength." Korea, PA: Korea Agency for Technology and Standards and Korea Standards Association (in Korean).
  10. KS L 5105 (2022). "Test method for compressive strength of hydraulic cement mortar." Korea, PA: Korea Agency for Technology and Standards and Korea Standards Association (in Korean).
  11. Lim, H. S., Choi, Y. S. and Cho, H. K. (2023). "Experiment study of road base materials properties using recycled aggregates with additives type and mix method." Journal of Korean Society for Advanced Composite Structures, Vol. 14, No. 6, pp. 57-62, https://doi.org/10.11004/kosacs.2023.14.6.057 (in Korean).
  12. Malkow, T. (2004). "Novel and innovative pyrolysis and gasification technologies for energy efficient and environmentally sound MSW disposal." Waste Management, Vol. 24, pp. 53-79, https://doi.org/10.1016/S0956-053X(03)00038-2.
  13. Mosaberpanah, M. A., Olabimtan, S. B., Balkis, A. P., Rabiu, B. O., Oluwole, B. O. and Ajuonuma, C. S. (2024). "Effect of biochar and sewage sludge ash as partial replacement for cement in cementitious composites: Mechanical, and durability properties." Sustainability, Vol. 16, No. 4, 1522, https://doi.org/10.3390/su16041522.
  14. Mrad, R. and Chehab, G. (2019). "Mechanical and microstructure properties of biochar-based mortar: An internal curing agent for PCC." Sustainability, Vol. 11, No. 9, 2491, https://doi.org/10.3390/su11092491.
  15. Ruziev, J., Lee, J. Y., Lee, S. J. and Kim, W. S. (2023). "Characteristics of biochar based on its carbonization degree." Journal of the Korean Society for Advanced Composite Structures, Vol. 14, No. 6, pp. 10-18, https://doi.org/10.11004/kosacs.2023.14.6.010 (in Korean).
  16. Scrivener, K. L. and Kirkpatrick, R. J. (2008). "Innovation in use and research on cementitious materials." Cement and Concrete Research, Vol. 38, pp. 128-136, https://doi.org/10.1016/j.cemconres.2007.09.025.
  17. Song, J. K., Yang, K. H. and Song, K. I. (2017). "Importance and characteristics of geopolymer concrete technology, magazine of RCR." Journal of the Korean Recycled Construction Resources Institute, Vol. 12, No. 1, pp. 8-15, https://doi.org/10.14190/MRCR.2017.12.1.008 (in Korean).
  18. Spokas, K. A. (2010). "Review of the stability of biochar in soils: predictability of O: C molar ratios." Carbon Management, Vol. 1, No. 2, pp. 289-303, https://doi.org/10.4155/cmt.10.32.
  19. Suarez-Riera, D., Lavagna, L., Carvajal, J. F., Tulliani, J., Falliano, D. and Restuccia, L. (2024). "Enhancing cement paste properties with biochar: Mechanical and rheological insights." Applied Sciences, Vol. 14, No. 6, 2616, https://doi.org/10.3390/app14062616.
  20. Sunage, D., Namiki, K. and Kanakubo, T. (2020). "Crack width evaluation of fiber-reinforced cementitious composite considering interaction between deformed steel rebar." Construction and Building Materials, Vol. 261, 119968, https://doi.org/10.1016/j.conbuildmat.2020.119968.
  21. Tan, K., Qin, Y., Du, T., Li, L., Zhang, L. and Wang, J. (2021). "Biochar from waste biomass as hygroscopic filler for pervious concrete to improve evaporative cooling performance." Construction and Building Materials, Vol. 287, 123078, https://doi.org/10.1016/j.conbuildmat.2021.123078.
  22. Zhao, S., Huang, B., Shu, X. and Ye, P. (2014). "Laboratory investigation of biochar-modified asphalt mixture." Journal of the Transportation Research Board, Vol. 2445, No. 1, pp. 56-64, https://doi.org/10.3141/2445-07.