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정권영 ( Jeong Gwon Young ),장석준 ( Jang Seok Joon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
This paper provides the flexural test results of steel fiber reinforced concrete (SFRC) prisms with different aspect ratios of steel fibers (60 and 67). All mixtures have specific compressive strength of 40 MPa and steel fiber volume fraction of 0.75%. According to ASTM C 1609 and EN-14651, SFRC prisms with 150×150×550 mm were made and tested under bending loading. Test results indicated that the aspect ratio of hooked-end steel fibers has insignificant effect on the first-cracking strength and flexural behavior of SFRC prisms.
강섬유 혼입률에 따른 고강도 콘크리트의 압축 및 휨 특성
임성훈 ( Lim Seong Hoon ),정권영 ( Jeong Gwon Young ),장석준 ( Jang Seok Joon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
This paper examines the effect of steel fiber volume fraction on compressive and flexural properties of high-strength concrete with compressive strength of 40 MPa. The fiber volume fractions used in this study consist of 0.5, 0.75 and 1.0%. The prisms with 150x150x550 mm were made and tested in accordance with EN-14651.
박용도 ( Park Yong Do ),정권영 ( Jeong Gwon Young ),장석준 ( Jang Seok Joon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
This paper presents the flexural test results of steel fiber reinforced concrete (SFRC) prisms with different lengths of steel fibers. The specified compressive strength of SFRC is 40 MPa. Two types of steel fiber used in this study have lengths (0.5 and 0.9mm). Test results indicated that steel fibers with longer length is more effective to improve the flexural performance of concrete prisms than steel fibers with shorter length.
섬유 인장강도가 고강도 SFRC 휨 특성에 미치는 영향
김용철 ( Kim Yong Cheol ),정권영 ( Jeong Gwon Young ),장석준 ( Jang Seok Joon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.2
This paper describes the flexural characteristic of high strength steel fiber reinforced concrete (SFRC) prisms with different fiber tensile strength. All mixtures have specified compressive strength of 80 MPa and fiber volume fraction of 0.5% and 1.0%. In accordance with EN-14651, SFRC prisms were made and tested under bending loading. Test results indicated that steel fiber has no significant effects on compressive behavior of SFRC. However, flexural behavior of high strength SFRC was improved considerably with increase of fiber tensile strength.