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      KCI등재 SCIE SCOPUS

      Analysis of the dynamic confining effect of CRAC short column under monotonic loadings

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      https://www.riss.kr/link?id=A106847379

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      다국어 초록 (Multilingual Abstract)

      Based on the dynamic tests of recycled aggregate concrete (RAC) short columns confined by the hoop reinforcement, the dynamic failure mechanism and the mechanical parameters related to the constitutive relation of confined recycled aggregate concrete (CRAC) were investigated thoroughly. The fracturing sections were relatively flat and smooth at higher strain rates rather than those at a quasi-static strain rate. With the increasing stirrup volume ratio, the crack mode is transited from splitting crack to slipping crack constrained with large transverse confinement. The compressive peak stress, peak strain, and ultimate strain increase with the increase of stirrup volume ratio, as well as the increasing strain rate. The dynamic confining increase factors of the compressive peak stress, peak strain, and ultimate strain increase by about 33%, 39%, and 103% when the volume ratio of hoop reinforcement is increased from 0 to 2%, but decrease by about 3.7%, 4.2%, and 9.1% when the stirrup spacing is increased from 20mm to 60mm, respectively. This sentence is rephrased as follows: When the stirrup volume ratios are up to 0.675%, and 2%, the contributions of the hoop confinement effect to the dynamic confining increase factors of the compressive peak strain and the compressive peak stress are greater than those of the strain rate effect, respectively. The dynamic confining increase factor (DCIF) models of the compressive peak stress, peak strain, and ultimate strain of CRAC are proposed in the paper. Through the confinement of the hoop reinforcement, the ductility of RAC, which is generally slightly lower than that of NAC, is significantly improved.
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      Based on the dynamic tests of recycled aggregate concrete (RAC) short columns confined by the hoop reinforcement, the dynamic failure mechanism and the mechanical parameters related to the constitutive relation of confined recycled aggregate concrete ...

      Based on the dynamic tests of recycled aggregate concrete (RAC) short columns confined by the hoop reinforcement, the dynamic failure mechanism and the mechanical parameters related to the constitutive relation of confined recycled aggregate concrete (CRAC) were investigated thoroughly. The fracturing sections were relatively flat and smooth at higher strain rates rather than those at a quasi-static strain rate. With the increasing stirrup volume ratio, the crack mode is transited from splitting crack to slipping crack constrained with large transverse confinement. The compressive peak stress, peak strain, and ultimate strain increase with the increase of stirrup volume ratio, as well as the increasing strain rate. The dynamic confining increase factors of the compressive peak stress, peak strain, and ultimate strain increase by about 33%, 39%, and 103% when the volume ratio of hoop reinforcement is increased from 0 to 2%, but decrease by about 3.7%, 4.2%, and 9.1% when the stirrup spacing is increased from 20mm to 60mm, respectively. This sentence is rephrased as follows: When the stirrup volume ratios are up to 0.675%, and 2%, the contributions of the hoop confinement effect to the dynamic confining increase factors of the compressive peak strain and the compressive peak stress are greater than those of the strain rate effect, respectively. The dynamic confining increase factor (DCIF) models of the compressive peak stress, peak strain, and ultimate strain of CRAC are proposed in the paper. Through the confinement of the hoop reinforcement, the ductility of RAC, which is generally slightly lower than that of NAC, is significantly improved.

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      참고문헌 (Reference)

      1 Frondistou, Y., "Waste concrete as aggregate concrete for new concrete" 212-219, 1977

      2 Zeng, S. J., "Triaxial Behavior of Concrete Subjected to Dynamic Compression" 139 (139): 1582-1592, 2013

      3 Huang, Y. J., "Theoretical study on mechanical behavior of steel confined recycled aggregate concrete" 76 : 100-111, 2012

      4 Mander, J. B., "Theoretical stress-strain model for confined concrete" 114 (114): 1804-1826, 1988

      5 Du, T., "The Complete Stress-strain Curve of Recycled Aggregate Concrete under Uniaxial Compression Loading" 25 (25): 862-865, 2010

      6 Caglar Goksu, "Structural performance of recycled aggregates concrete sourced from low strength concrete" 국제구조공학회 69 (69): 77-93, 2019

      7 Kim, S. W., "Structural performance of recycled aggregate concrete confined by spiral reinforcement" 17 (17): 541-548, 2018

      8 Wee, T. H., "Stress-strain relationship of high-strength concrete in compression" 8 (8): 70-76, 1996

      9 Scott, B. D., "Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates" 79 (79): 13-27, 1982

      10 Zhao, J. L., "Stress-strain behavior of FRP-confined recycled aggregate concrete" 19 (19): 1-11, 2015

      1 Frondistou, Y., "Waste concrete as aggregate concrete for new concrete" 212-219, 1977

      2 Zeng, S. J., "Triaxial Behavior of Concrete Subjected to Dynamic Compression" 139 (139): 1582-1592, 2013

      3 Huang, Y. J., "Theoretical study on mechanical behavior of steel confined recycled aggregate concrete" 76 : 100-111, 2012

      4 Mander, J. B., "Theoretical stress-strain model for confined concrete" 114 (114): 1804-1826, 1988

      5 Du, T., "The Complete Stress-strain Curve of Recycled Aggregate Concrete under Uniaxial Compression Loading" 25 (25): 862-865, 2010

      6 Caglar Goksu, "Structural performance of recycled aggregates concrete sourced from low strength concrete" 국제구조공학회 69 (69): 77-93, 2019

      7 Kim, S. W., "Structural performance of recycled aggregate concrete confined by spiral reinforcement" 17 (17): 541-548, 2018

      8 Wee, T. H., "Stress-strain relationship of high-strength concrete in compression" 8 (8): 70-76, 1996

      9 Scott, B. D., "Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates" 79 (79): 13-27, 1982

      10 Zhao, J. L., "Stress-strain behavior of FRP-confined recycled aggregate concrete" 19 (19): 1-11, 2015

      11 "Removal and Reuse of Hardened Concrete" 300-325, 2002

      12 Xiao, J. Z., "Recycled Concrete" Chinese Building Press 2008

      13 Wang, C. Q., "Rate Dependence of Confined Recycled Aggregate Concrete" 114 (114): 1557-1567, 2017

      14 Li, J. B., "Properties of recycled coarse aggregate and its influence on recycled concrete" 7 (7): 390-395, 2004

      15 Sagoe-Crentsil, K. K., "Performance of concrete made with commercially produced coarse recycled concrete aggregate" 31 : 707-712, 2001

      16 Zongping Chen, "Performance and Calculations of Recycled Aggregate Concrete-filled Steel Tubular (RACFST) Short Columns under Axial Compression" 한국강구조학회 14 (14): 31-42, 2014

      17 Xiao, J. Z., "Mechanical properties of recycled aggregate concrete under uniaxial loading" 35 : 1187-1194, 2005

      18 Xiao, J. Z., "Mechanical properties of confined recycled aggregate concrete under axial compression" 26 (26): 591-603, 2012

      19 "GB/T 25177, Recycled Coarse Aggregate for Concrete"

      20 Ye, Y. H., "Failure mechanism of high-strength concrete confined by stirrups" 3 : 5-9, 1995

      21 Yang, Y. F., "Experimental behaviour of recycled aggregate concrete filled stainless steel tube stub columns and beams" 66 : 62-75, 2013

      22 Nasim K. Shatarat, "Effect of using recycled coarse aggregate and recycled asphalt pavement on the properties of pervious concrete" 국제구조공학회 67 (67): 283-290, 2018

      23 Lu, Y. B., "Dynamic compressive behavior of recycled aggregate concrete based on split Hopkinson pressure bar tests" 11 (11): 131-141, 2014

      24 Li, B., "Constitutive behavior of high-strength concrete under dynamic loads" 97 (97): 619-629, 2000

      25 Xiao, J. Z., "Compressive behaviour of recycled aggregate concrete under impact loading" 71 : 46-55, 2015

      26 Bischoff, P. H., "Compressive behavior of concrete at high strain rates" 24 (24): 425-450, 1991

      27 Chen, G. M., "Compressive behavior of CFRP-confined recycled aggregate concrete in different-sized circular sections" 22 (22): 1-12, 2018

      28 Jin, X., "Behaviour of high-and normal-strength concrete at early ages" 57 (57): 339-345, 2005

      29 Xiao, J. Z., "Aggregate interlock and Shear transfer across a crack in recycled aggregate concrete" 42 (42): 700-709, 2012

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      2005-05-26 학술지명변경 한글명 : 국제구조계산역학지 -> Structural Engineering and Mechanics, An Int'l Journal KCI등재
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      2016 1.12 0.62 0.94
      KCIF(4년) KCIF(5년) 중심성지수(3년) 즉시성지수
      0.79 0.68 0.453 0.33
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