Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Mechanical Properties of Strain Hardening Cement-Based Composite (SHCC) with Recycled Materials

자원순환형 재료를 사용한 변형경화형 시멘트 복합체(SHCC)의 역학적 특성

  • Kim, Sun-Woo (Dept. of Architectural Engineering, Chungnam National University) ;
  • Cha, Jun-Ho (Dept. of Architectural Engineering, Chungnam National University) ;
  • Kim, Yun-Yong (Dept. of Civil Engineering, Chungnam National University) ;
  • Yun, Hyun-Do (Dept. of Architectural Engineering, Chungnam National University)
  • Received : 2010.06.24
  • Accepted : 2010.09.09
  • Published : 2010.10.31
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Abstract

This paper describes results of an preliminary study to produce strain hardening cement-based composites (SHCCs)with consideration of sustainability for infrastructure applications. The aims of this study are to evaluate the influence of recycled materials on the mechanical characteristics of SHCCs, such as compressive, four-point bending, and direct tensile behaviors, and to give basic data for constitutive model for analyzing and designing infra structures with SHCCs. In this study, silica sand, cement, and PVA fibers, were partially replaced with recycled sand, fly-ash, and FET fibers in the mixture of SHCCs, respectively. Test results indicated that fly-ash could improve both bending and direct tensile performance of SHCCs due to increasing chemical bond strength at the interface between PVA fibers and cement matrices. However, SHCCs replaced with PET fibers showed much lower performance in bending and direct tensile tests due to originally low mechanical properties of own fibers, although compressive behavior is similar to PVA2.0 specimen. Also, it was noted that the recycled sand would increase elastic modulus of SHCCs due to larger grain size compared to silica sand. Based on pre-set target value to maintain the performance of SHCCs, it was concluded that the replacement ratio below 20% of fly-ash or below 50% of recycled sands would be desirable for creating sustainable SHCCs.

본 논문은 인장에서의 연성능력을 유지하면서도 구조물 적용시에 지속가능성을 확보할 수 있는, 지속가능한 SHCCs를 제조하기 위한 기초자료를 제공하고자 한다. 본 연구의 목적은 자원순환형 재료가 압축, 휨, 직접인장거동 등 SHCCs의 역학적 특성에 미치는 영향을 평가함과 동시에, 구조물의 개발 및 해석시 구성모델에 대한 기초자료를 제공하는 것이다. 규사, 시멘트, PVA 섬유의 치환재로써 순환잔골재, 플라이애시, PET 섬유가 각각 SHCCs 배합에 일부 치환되었다. 실험결과, 플라이애시는 PVA 섬유와 시멘트 매트릭스 간 화학적 부착력을 증가시켜 SHCCs의 휨 및 직접인 장성능을 증가시킬 수 있는 것으로 나타났다. 그러나 PET 섬유가 치환된 SHCCs는 압축에서는 기준시험체인 PVA2.0과 유사하였으나, 섬유 자체의 낮은 기계적 특성으로 인해 휨 및 직접인장성능에서는 매우 낮게 나타났다. 순환골재의 경우 기존 규사보다 큰 골재치수로 인해 SHCCs의 탄성계수를 증가시키는 것으로 나타났다. SHCCs의 성능을 유지하기 위해 설정된 목표치를 근거로 할 때, 플라이애시는 20% 이하, 순환잔골재는 50% 이하로 치환하는 것이 지속가능한 SHCCs 제조에 바람직할 것으로 판단되었다.

Keywords

References

  1. 윤석경, “시멘트산업 치환연료의 온실가스 배출계수 개발 및 저감량 평가 연구,” 세종대학교 대학원 석사학위논문, 2007, 61 pp.
  2. B. K. Raghu Prasad, Hamid Eskandari, and B. V. Venkatarama Reddy, “Prediction of Compressive Strength of SCC and HPC with High Volume Fly Ash Using ANN,” Construction and Building Materials, Vol. 23, No. 1, 2009,pp. 117-128. https://doi.org/10.1016/j.conbuildmat.2008.01.014
  3. Gines, O., Chimenos, J. M., Vizcarroa, A., Formosa J., and Rosell, J. R., “Combined Use of MSWI Bottom Ash and Fly Ash as Aggregate in Concrete Formulation: Environmental and Mechanical Considerations,” Journal of Hazardous Materials, Vol. 169, Nos. 1-3, 2009, pp. 643-650. https://doi.org/10.1016/j.jhazmat.2009.03.141
  4. Yang, E. H., Yang, Y., and Li, V. C., “Use of High Volumes of Fly Ash to Improve ECC Mechanical Properties and Material Greenness,” ACI Materials Journal, Vol. 104, No. 6, 2007, pp. 620-628.
  5. 윤현도, 김용철, 김선우, “보강섬유 종류에 따른 변형경화형 시멘트 복합체의 거동특성,” 대한건축학회 논문집(구조계), 24권, 5호, 2008, pp. 114-121.
  6. 박완신, 윤현도, 전에스더, “PET 합성섬유의 혼입조건에 따른 시멘트 복합체의 변형경화 특성,” 대한건축학회 논문집(구조계), 24권, 10호, 2008, pp. 37-44.
  7. Likhitruangsilp, V., “Moment-Rotation Response and Punching Shear Resistance of High Performance Fiber Reinforced Cementitious Composite Structural Members,” Ph.D. Thesis, University of Michigan, 2006, 157 pp.
  8. Chompreda, P., “Deformation Capacity and Shear Strength of Fiber Reinforced Cement Composite Flexural Members Subjected to Displacement Reversals,” Ph. D. Thesis, University of Michigan, 2005, 186 pp.
  9. Parra-Montesinos, G. J., “High-Performance Fiber Reinforced Cement Composites: a New Alternative for Seismic Design of Structures,” ACI Structural Journal, Vol. 102, No. 5, 2005, pp. 668-675.
  10. Kim, Y. Y., Ficher, G., and Li, V. C., “Performance of Bridge Deck Link Slabs Designed with Ductile ECC,” ACI Structural Journal, Vol. 101, No. 6, 2004, pp. 792-801.
  11. Li, V. C., Mishra, D. K., Naaman, A. E., Wight, J. K., LaFave, J. M., Wu, H. C., and Inada, Y., “On the Shear Behavior of Engineered Cementitious Composites,” Journal of Advanced Cement Based Materials, Vol. 1, No. 3, 1994, pp. 142-149. https://doi.org/10.1016/1065-7355(94)90045-0
  12. Fukuyama, H., Sato, Y., Li, V. C., Matsuzaki, Y., and Mihashi, H., “Ductile Engineered Cementitious Composite Elements for Seismic Structural Applications,” Proceedings of the 12 WCEE, Paper 1672, 2000, pp. 1-8.
  13. Chandrangsu, K., “Innovative Bridge Deck with Reduced Reinforcement and Strain-Hardening Fiber-Reinforced Cementitious Composites,” Ph.D. Thesis, University of Michigan, 2003, 265 pp.
  14. Fukuyama, H. and Suwada, H., “Experimental Response of HPFRCC Dampers for Structural Control,” Journal of Advanced Concrete Technology, Vol. 1, No. 3, 2003, pp. 317-326. https://doi.org/10.3151/jact.1.317
  15. Nagai, S., Kanda, T., Maruta, M., and Miyashita, T., “Shear Capacity of Ductile Wall with High Performance Fiber Reinforced Cement Composite,” Proceedings of the 1st fib Congress, Japan, 2002, pp. 767-774.
  16. 전에스더, 윤현도, 김윤수, 장용헌, 유영찬, 김긍환, “단PE섬유를 혼입한 변형경화형 시멘트 복합체(SHCC)의 인장거동특성,” 대한건축학회 학술발표대회 논문집, 28권,1호, 2008, pp. 451-454.
  17. 지식경제부 기술표준원, “플라이애쉬” KS L 5405, 2009, 16 pp.
  18. 지식경제부 기술표준원, “콘크리트용 순환 골재,” KS F 2573, 2006, 10 pp.
  19. 지식경제부 기술표준원, “콘크리의 강도 시험용 공시체 제작 방법,” KS F 2403, 2005, 18 pp.
  20. 지식경제부 기술표준원, “콘크리트의 휨 강도 시험 방법,” KS F 2408, 2000, 11 pp.
  21. Liu, B., Xie, Y., Zhou, S., and Yuan, Q., “Influence of Ultrafine Fly Ash Composite on the Fluidity and Compressive Strength of Concrete,” Cement and Concrete Research, Vol. 30, No. 9, 2000, pp. 1489-1493. https://doi.org/10.1016/S0008-8846(00)00323-9
  22. Yang, E. H., Wang, S., Yang, Y., and Li, V. C., “Fiber-Bridging Constitutive Law of Engineered Cementitious Composites,” Journal of Advanced Concrete Technology, Vol. 6, No. 1, 2008, pp. 181-193. https://doi.org/10.3151/jact.6.181
  23. Sahmaran, M., Christianto, H. A., and Yaman I. O., “The Effect of Chemical Admixtures and Mineral Additives on the Properties of Self-Compacting Mortars,” Cement and Concrete Composites, Vol. 28, No. 5, 2006, pp. 432-440. https://doi.org/10.1016/j.cemconcomp.2005.12.003
  24. ACI Committee 232, “Use of Natural Pozzolans in Concrete,” ACI Materials Journal, Vol. 91, No. 4, 1994, pp. 410-426.
  25. Wei, S., Handong, Y., and Binggen, Z., “Analysis of Mechanism on Water-Reducing Effect of Fine Ground Slag, High-Calcium Fly Ash, and Low-Calcium Fly Ash,” Cement and Concrete Research, Vol. 33, No. 8, 2003, pp. 1119-1125. https://doi.org/10.1016/S0008-8846(03)00022-X
  26. Okamura, H. and Ouchi, M., “Self-Compacting Concrete,” Journal of Advanced Concrete Technology, Vol. 11, No. 1, 2003, pp. 5-15.
  27. Perdikaris, P. C. and Romeo, A., “Size Effect on Fracture Energy of Concrete and Stability Issues in Three-Point Bending Fracture Toughness Testing,” ACI Materials Journal, Vol. 92, No. 5, 1995, pp. 483-496.
  28. 박완신, 윤현도, 전에스더, 남상현, “섬유의 혼입이 변형 경화형 시멘트 복합체에 미치는 영향,” 대한건축학회 논문집(구조계), 25권, 11호, 2009, pp. 29-36.
  29. 윤현도, 김선우, 전에스더, “섬유 혼입조건에 따른 섬유 보강 고인성 시멘트 복합체의 인장거동 특성,” 대한건축학회 논문집(구조계), 22권, 12호, 2006, pp. 79-86.
  30. Kentucky Transportation Center (KTC), “The Cost of Construction Delays and Traffic Control for Life-Cycle Cost Analysis of Pavements,” KTC-02-07/SPR197-99 & SPR218-00-1F, 2002, http:www.ktc.uky.edu/Reports/KTC_02_07_ SPR197_99_SPR218_00_1F.pdf.
  31. 한국수자원공사, 2010, http://www.kwater.or.kr.
  32. 정종석, 이재성, 안양진, 이경희, 배기선, 전명훈, “폐콘크리트 재활용 방식에 따른 이산화탄소 발생량 분석,” 대한건축학회 논문집(구조계), 24권, 10호, 2008, pp. 109-116.
  33. 이강희, 양재혁, “주요 건축자재의 에너지소비와 이산화탄소 배출원단위 산정 연구,” 대한건축학회 논문집(계획계), 25권, 6호, 2009, pp. 43-51.

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