한국구조물진단유지관리공학회 논문집 (Journal of the Korea institute for structural maintenance and inspection)

  • 제16권3호
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  • Pages.67-74
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  • 2012
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  • 2234-6937(pISSN)
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  • 2287-6979(eISSN)
한국구조물진단유지관리공학회 (Korea Institute for Structural Maintenance Inspection)
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바이오숯을 함유한 모르타르의 역학적 특성

Mechanical Properties of Mortar Containing Bio-Char From Pyrolysis

  • Choi, Won Chang (Dept. of CAAE Engineering, North Carolina A&T State University) ;
  • Yun, Hyun Do (Dept. of Architectural Engineering, Chungnam National University) ;
  • Lee, Jae Yeon (Dept. of Architectural Engineering, Mokwon University)
  • 투고 : 2012.01.19
  • 심사 : 2012.03.26
  • 발행 : 2012.05.30
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초록

바이오매스에서 얻어지는 바이오차는 토질 개량제와 탄소 격리제로 제한적인 분야에서 성공적으로 사용되고 있다. 현재 산업전반에서 CO2 에 의한 환경에 부정적인 영향을 완화시키고 지속가능성을 증진시키기 위한 연구가 활발히 진행되고 있다. 이에 본 연구에서는 고탄소 바이오차를 탄소 격리제 또는 시멘트의 혼화재로써 활용 가능성을 평가하고자 하였다. 견목재에서 얻어진 바이오차를 혼화재로 사용하여 시멘트 배합조건을 달리하면서 모타르의 압축강도, 마이크로구조, 압축강도, 유동성, 중량감소와 같은 화학적, 물리적 재료성질을 평가하였다. 또한 플리이애쉬를 사용한 모르타르의 역학적 특성과 비교 평가하였다.

Bio-char, obtained from biomass as a by-product of the pyrolysis process, is used successfully as a soil amendment and carbon sequester in this limited study. Recent and active research from literatures has extended the application of bio-char in the industry to promote sustainability and help mitigate the negative environmental impacts caused by carbon emissions. This study aims to investigate the feasibility of high-carbon bio-char as a carbon sequester and/or admixture in mortar and concrete to improve the sustainability of concrete. This paper presents the experimental results of an initial attempt to develop a cement admixture using bio-char. In particular, the effects of the water retention capacity of bio-char in concrete are investigated. The chemical and mechanical properties (e.g., the chemical components, microstructure, concrete weight loss, compressive strength and mortar flow) are examined using sample mortar mixes with varying replacement rates of cement that contains hardwood bio-char. The experimental results also are compared with mortar mixes that contain fly ash as the cement substitute.

키워드

참고문헌

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피인용 문헌

  1. Use of biochar-coated polypropylene fibers for carbon sequestration and physical improvement of mortar vol.83, 2017, https://doi.org/10.1016/j.cemconcomp.2017.07.012
  2. Factors Determining the Potential of Biochar As a Carbon Capturing and Sequestering Construction Material: Critical Review vol.29, pp.9, 2017, https://doi.org/10.1061/(asce)mt.1943-5533.0001924
  3. Effect of swine-waste bio-char on the water absorption characteristics of cement pastes vol.36, pp.3, 2012, https://doi.org/10.1108/ijbpa-11-2017-0055
  4. High-Volume Carbon Sequestration for Controlled Low-Strength Materials vol.116, pp.4, 2019, https://doi.org/10.14359/51716817
  5. Accelerated carbonation of biochar reinforced cement-fly ash composites: Enhancing and sequestering CO2 in building materials vol.244, pp.None, 2012, https://doi.org/10.1016/j.conbuildmat.2020.118363
  6. Combination of Biochar and Silica Fume as Partial Cement Replacement in Mortar: Performance Evaluation Under Normal and Elevated Temperature vol.11, pp.6, 2012, https://doi.org/10.1007/s12649-018-00573-x
  7. Fresh Properties of Cementitious Materials Containing Rice Husk Ash for Construction 3D Printing vol.32, pp.8, 2020, https://doi.org/10.1061/(asce)mt.1943-5533.0003230
  8. Properties of cement mortar containing pulverized biochar pyrolyzed at different temperatures vol.263, pp.None, 2020, https://doi.org/10.1016/j.conbuildmat.2020.120616
  9. Recycling biosolids as cement composites in raw, pyrolyzed and ashed forms: A waste utilisation approach to support circular economy vol.38, pp.None, 2012, https://doi.org/10.1016/j.jobe.2021.102199
  10. Carbon sequestration in cementitious composites using biochar and fly ash – Effect on mechanical and durability properties vol.291, pp.None, 2012, https://doi.org/10.1016/j.conbuildmat.2021.123363
  11. Industrial biochar systems for atmospheric carbon removal: a review vol.19, pp.4, 2012, https://doi.org/10.1007/s10311-021-01210-1
  12. Gasification biochar from horticultural waste: An exemplar of the circular economy in Singapore vol.781, pp.None, 2012, https://doi.org/10.1016/j.scitotenv.2021.146573
  13. Strength and durability improvements of biochar-blended mortar or paste using accelerated carbonation curing vol.54, pp.None, 2012, https://doi.org/10.1016/j.jcou.2021.101766
  14. Biochar as a Partial Cement Replacement Material for Developing Sustainable Concrete: An Overview vol.33, pp.12, 2021, https://doi.org/10.1061/(asce)mt.1943-5533.0003987