Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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A Comprehensive Examination of Autogenous Shrinkage in Ultra-High-Strength Concrete augmented with Graphene and Hollow Glass Powder

그래핀과 유공유리분말을 사용한 초고강도 콘크리트의 자기수축에 관한 실험적 연구

  • Received : 2023.08.25
  • Accepted : 2023.10.11
  • Published : 2023.10.20
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Abstract

This research delves into the fabrication of an ultra-high-strength concrete, enriched with oxidized graphene nanoplatelet(GO) and hollow glass powder(HGP), notably eschewing the conventional inclusion of silica fume(SF). The primary objective was to scrutinize the autogenous shrinkage characteristics of this innovative formulation. It was discerned that the NewMix specimen, which incorporated the cGO(sourced from Company C) and HGP, and intentionally bypassed SF, showcased a commendable 13% reduction in autogenous shrinkage relative to the benchmark(Ref) specimenthat incorporated SF. Moreover, the proclivity for crack formation owing to autogenous shrinkage in the NewMix was observed to manifested by NewMix at the juncture of cracking emerged as the apex value. Attributed to the expansive specific surface area and exemplary dispersibility of cGO, it was postulated that the concrete's pore structure benefitted from enhanced infill, leading to a reduction in autogenous shrinkage. Additionally, the cGO integration fortified the concrete's resistance to crack initiation. Consequently, such an enhancement is posied to be pivotal in mitigating crack propagation resulting from autogenous shrinkage in ultra-high-strength concrete.

초고강도 콘크리트의 강도와 유동성 확보를 위해 실리카흄(SF)를 사용하는 전통적인 방식에서 벗어나 산화 그래핀 나노플레이트릿(Oxidized graphene nanoplatelet, GO)와 유공유리분말( Hollow glass powder, HGP)를 사용한 초고강도 콘크리트를 개발하였고 본 연구에서는 자기수축 특성에 대해 검토하였다. 그 결과 SF를 사용한 Ref 배합보다 SF를 사용하지 않고 cGO(C사의 GO)와 HGP를 사용한 NewMix 배합의 자기수축이 13% 정도 감소하였다. NewMix의 자기수축에 의한 균열발생은 Ref 보다 1일 정도 지연되었고 균열발생 시의 인장응력은 가장 높았다. cGO의 높은 비표면적과 우수한 분산성으로 콘크리트 내의 공극들이 충전 되어 자기수축이 감소하고 cGO에 의한 균열저항 성능이 증가하여 초고강도 콘크리트의 자기수축 균열 제어에 효과가 있을 것으로 판단된다.

Keywords

Acknowledgement

This study is part of the joint research results of Hyundai E&C and Sampyo Industries.

References

  1. Seo TS, Byon C, Kim KM, Lee HS. An experimental study on the mechanical performance of ultra-high strength concrete using graphene and hollow glass powder. Journal of the Korea Institute of Building Construction. 2023 Aug;23(4):381-92. https://doi.org/10.5345/JKIBC.2023.23.4.381
  2. Kim KN. Technology development trend and application of graphene. Bulletin of the Korean institute of electrical and electronic material engineers. 2016 Jun;29(6):3-11. https://doi.org/10.4313/JKEM.2016.29.11.676
  3. Kim JH, Choi IJ, Kim SH, Han SY, Joung CW. Production of graphene oxide reinforced cement paste. Building Construction. 2020 Jun;20(2):39-44.
  4. Yoon S, Lee HY, Seo TS. Experimental study on the material properties of high strength concrete with hollow glass powder. Journal of the Korea Institute of Building Construction. 2020 Aug;20(4):313-9. https://doi.org/10.5345/JKIBC.2020.20.4.313
  5. Kwon SH, Kim JK. Understanding of drying shrinkage and autogeneous shrinkage in concrete. Magazine of the Korea Concrete Institute. 2016 Nov;28(6):22-6.
  6. Soeda K. Concrete of crack of concrete by expansive additive. Concrete Journal of Japan Concrete Institute. 2005 May;43(5):102-7.
  7. KS F 2403. Method of making and curing concrete specimens. Seoul (Korea): Korea Agency for Technology and Standards; 2005. 14 p.
  8. KS F 2586. Standard test method for autogenous shrinkage and expansion of cement paste, mortar and concrete. Seoul (Korea): Korea Agency for Technology and Standards; 2021. 6 p.
  9. KS F 2424. Standard test method for length change of mortar and concrete. Seoul (Korea): Korea Agency for Technology and Standards; 2020. 11 p.
  10. AASHTO Designation T334-08. Standard method of test for estimating the cracking tendency of concrete. WA: American Association of State Highway and Transportation Officials; 1998. p. 34-99.
  11. Sufen D, Yanlei W, Ashraf A, Baoguo H, Jinping O. Nano/micro-structures and mechanical properties of ultra-high performance concrete incorporating graphene with different lateral sizes. Composites Part A: Applied Science and Manufacturing. 2020 Oct;137:106011. https://doi.org/10.1016/j.compositesa.2020.106011
  12. Kwak DY, Tanimura M, Satake S. Shrinkage properties of ultra-high strength concrete with expansive additive. Proceeding of the Japan Concrete Institute; 2008 Jul 9; Hukuoka, Japan. Tokyo (Japan): the Japan Concrete Institute; 2008. p. 471-6.
  13. Suzuki M. Studies on reduction of early age deformation induced stress and resultant crack in reinforced ultra high-strength concrete members [dissertation]. [Hiroshima (Japan)]: Hiroshima University; 2009. 135 p.
  14. Kim SW, Choi S, Lee KM, Park JJ. Autogenous shrinkage characteristics of ultra high performance concrete. Journal of the Korea Concrete Institute. 2011 Jun;23(3):295-301. https://doi.org/10.4334/JKCI.2011.23.3.295
  15. Hossain AB, Weiss J. Assessing residual stress development and stress relaxation in restrained concrete ring specimens. Cement Concrete Composite. 2004 Jul;26(5):531-40. https://doi.org/10.1016/S0958-9465(03)00069-6
  16. Noguchi T, Tomosawa F. Relationship between compressive strength and various mechanical properties of high strength concrete. Journal of Structural and Construction Engineering, Architectural Institute of Japan. 1995 Jun;60(472):11-6. https://doi.org/10.3130/aijs.60.11_3
  17. AIJ. Recommendations for practiec of crack in reinforced concrete structures (Design and construction). Tokyo (Japan): Architectural Institute of Japan; 2006. 68 p.
  18. Kanda T. Quantitative evaluation of shrinkage cracking initiation. Concrete Journal of Japan Concrete Institute. 2005 May;43(5):60-5.