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윤다애 ( Youn Da Ae ),김지현 ( Kim Ji Hyeon ),임성훈 ( Lim Seong Hoon ),장아연 ( Jang Ah Yeon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
The study was conducted to evaluate the penetration performance of Surface Protection Material(SPM) according to the particle size distribution of fine aggregate. The fine three types of aggregates were used, and the amounts of SPM were applied 0.13, 0.25, 0.36, and 0.51 kg/㎡. Test results indicated that the penetration depth of SPM were improved with increasing the amounts of application of SPM. And The penetration depth of SPM were improved with increasing the percentage of passing weight of size of sieve between 0 and 1.25mm.
표면보호재료가 모르타르의 염화물 침투 저항성능에 미치는 영향
윤다애 ( Youn Da Ae ),김지현 ( Kim Ji Hyeon ),임성훈 ( Lim Seong Hoon ),장아연 ( Jang Ah Yeon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
This study was evaluated the chloride penetration resistance performance of Surface Protection Material(SPM). SPM was applied 0.25 and 0.51 kg/㎡ to the surface of the mortar and immersed aging of the chloride solution 7, 14, and 28 days. As a results, In the case of SPM was applied, chloride did not penetrate until the 28th day.
강섬유 인장모델에 따른 SFRC 노치보의 휨 거동 해석
김지현 ( Kim Ji Hyeon ),윤다애 ( Youn Da Ae ),임성훈 ( Lim Seong Hoon ),장아연 ( Jang Ah Yeon ),윤현도 ( Yun Hyun Do ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
This paper evaluates analytically the flexural behavior of steel fiber reinforced concrete (SFRC) notched beams according to the tensile strength of steel fiber. For this purpose, compressive strength and bending tests of SFRC applying steel fibers with tensil strength of 1,200 and 1,600 MPa was conducted. Strain hardening behavior was observed when using high tensile strength steel fiber. Compression and tensile models were established through test results. For the tensile model, hordijk model and trilinear model were analyzed and compared. The results of analysis showed good agreement when using trilinear model.
1,600 MPa급 강섬유를 사용한 고강도 SFRC 보의 파괴거동
김지현 ( Kim Ji-hyeon ),윤다애 ( Youn Da-ae ),임성훈 ( Lim Seong-hoon ),장아연 ( Jang Ah-yeon ),윤현도 ( Yun Hyun-do ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
In this paper, fracture behavior of high-strength SFRC with high tensile strength steel fiber was investigated. Two different steel fibers with tensile strength of 1,200 and 1,600 MPa was used in SFRC specimens. Tst results showed that fracture behavior was more ductile with increasing the steel fiber tensile strength.
1,600 MPa급 강섬유를 사용한 고강도 SFRC 보의 유한요소해석
김지현 ( Kim Ji-hyeon ),윤다애 ( Youn Da-ae ),임성훈 ( Lim Seong-hoon ),장아연 ( Jang Ah-yeon ),윤현도 ( Yun Hyun-do ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
In this paper, finite element analysis of high-strength SFRC with high tensile strength steel fiber was investigated. Compressive and flexural behavior was ductile when using steel fiber tensile strength 1,600 MPa. Thorenfeldt and Trilinear models were used to describe the compressive and tensile behavior. Inverse analysis was performed to construct tensile model by evaluating flexural behavior. The flexural behavior of test results were similar to analysis results.