Advances in concrete construction

  • 제5권1호
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  • Pages.31-48
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  • 2017
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Effect of metakaolin on the properties of conventional and self compacting concrete

  • Lenka, S. (Department of Civil Engineering, ITER, SOA University) ;
  • Panda, K.C. (Department of Civil Engineering, ITER, SOA University)
  • 투고 : 2016.09.21
  • 심사 : 2017.02.27
  • 발행 : 2017.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Supplementary cementitious materials (SCM) have turned out to be a vital portion of extraordinary strength and performance concrete. Metakaolin (MK) is one of SCM material is acquired by calcinations of kaolinite. Universally utilised as pozzolanic material in concrete to enhance mechanical and durability properties. This study investigates the fresh and hardened properties of conventional concrete (CC) and self compacting concrete (SCC) by partially replacing cement with MK in diverse percentages. In CC and SCC, partial replacement of cement with MK varies from 5-20%. Fresh concrete properties of CC are conducted by slump test and compaction factor tests and for SCC, slump flow, T500, J-Ring, L-Box, V-Funnel and U-Box tests. Hardened concrete characteristics are investigated by compressive, split tensile and flexural strengths at age of 7, 28 and 90 days of curing under water. Carbonation depth, water absorption and density of MK based CC and SCC was also computed. Fresh concrete test results indicated that increase in MK replacement increases workability of concrete in a constant w/b ratio. Also, outcomes reveal that concrete integrating MK had greater compressive, flexural and split tensile strengths. Optimum replacement level of MK for cement was 10%, which increased mechanical properties and robustness properties of concrete.

키워드

참고문헌

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  8. Combining internal and external curing to improve quality of self-compacting concrete with consideration of climate effects vol.12, pp.2, 2021, https://doi.org/10.12989/acc.2021.12.2.085
  9. Investigating embodied carbon, mechanical properties, and durability of high-performance concrete using ternary and quaternary blends of metakaolin, nano-silica, and fly ash vol.28, pp.35, 2021, https://doi.org/10.1007/s11356-021-13918-2
  10. Suitability of Blending Rice Husk Ash and Calcined Clay for the Production of Self-Compacting Concrete: A Review vol.14, pp.21, 2021, https://doi.org/10.3390/ma14216252
  11. Lime-activation of natural pozzolan for use as supplementary cementitious material in concrete vol.13, pp.3, 2017, https://doi.org/10.1016/j.asej.2021.09.029
  12. Experimental studies of sustainable concrete modified with colloidal nanosilica and metakaolin vol.7, pp.1, 2017, https://doi.org/10.1007/s41024-021-00157-8