Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Booki Chun"'
Publikováno v:
Developments in the Built Environment, Vol 20, Iss , Pp 100581- (2024)
This study investigates the enhancement of impact resistance in reinforced concrete (RC) beams using ultra-high-performance fiber-reinforced concrete (UHPFRC). Three types of steel fibers and two fiber volume fractions (0.75% and 1.5%) were considere
Externí odkaz:
https://doaj.org/article/37ae5c75049e4b6c87d3951334eb890d
Autor:
Soonho Kim, Rongzhen Piao, Seung Kyun Lee, Taekgeun Oh, Booki Chun, Jae-Weon Jeong, Ha-Jin Lee, Doo-Yeol Yoo
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03861- (2024)
This study investigates the effects of the water-to-cement (w/c) ratio and carbon nanotube (CNT) dosage on the thermoelectric and mechanical properties of cement-based composites. Four different types of w/c ratio including 0.2, 0.3, 0.4, and 0.5 wer
Externí odkaz:
https://doaj.org/article/f70aa1dbd4b940f69f30c5d2b9de104e
Autor:
Doo-Yeol Yoo, Salman Soleimani-Dashtaki, Taekgeun Oh, Booki Chun, Nemkumar Banthia, Seung-Jung Lee, Young-Soo Yoon
Publikováno v:
Developments in the Built Environment, Vol 17, Iss , Pp 100343- (2024)
This study evaluated the effects of volume fraction, aspect ratio, and shape of steel fibers on the mechanical properties of ultra-high-performance fiber-reinforced concrete (UHPFRC) and the structural behavior of reinforced (R-) UHPFRC beams. The te
Externí odkaz:
https://doaj.org/article/4025e487aaa143bf963531d2e6940e48
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 1993-2007 (2022)
This study investigated the effect of substituting nano-SiO2 for silica fume on the fiber-matrix interfacial bond performance of ultra-high-performance concrete (UHPC). In this study, silica fume was substituted by nano-SiO2 in the weight range of 0
Externí odkaz:
https://doaj.org/article/8c9a5f88c2fd4ab1bd5424005eb5f7ae
Publikováno v:
Journal of Materials Research and Technology, Vol 13, Iss , Pp 1934-1945 (2021)
This study aims to develop a robust strain-hardening ultra-rapid-hardening mortar (URHM) with high-volume cementitious materials and polyethylene (PE) fibers. To achieve this, the combined effect of cement kiln dust (CKD) and silica fume (SF) on the
Externí odkaz:
https://doaj.org/article/df579370e5834719b9f4c42921bd1748
Reinforcing effect of surface-modified steel fibers in ultra-high-performance concrete under tension
Publikováno v:
Case Studies in Construction Materials, Vol 16, Iss , Pp e01125- (2022)
The direct tensile behavior of ultra-high-performance surface-modified steel fiber-reinforced concrete was evaluated in this study. Various chemical modifications were applied to steel fibers, including acetone washing, hydrochloric acid washing, zin
Externí odkaz:
https://doaj.org/article/98ccb858c23041768a33bd29945001d0
Autor:
Doo-Yeol Yoo, Booki Chun
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 5, Pp 9813-9823 (2020)
Surface-treated steel fibers were developed for enhancing the dynamic pullout performance from ultra-high-performance cement composites (UHPCC). To this end, three types of straight steel fibers with a smooth surface (plain) and longitudinal and tran
Externí odkaz:
https://doaj.org/article/38e2dce7e52547f1b119db6f57e2d966
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 3, Pp 3632-3648 (2020)
This study investigates the effect of surface corrosion on the pullout behavior of straight steel fibers embedded in ultra-high-performance concrete (UHPC). To this aim, straight steel fibers, either with or without surface corrosion, were utilized,
Externí odkaz:
https://doaj.org/article/847c0dafad544e1ca785664043b73215
Publikováno v:
Applied Sciences, Vol 11, Iss 5, p 2394 (2021)
This study investigated the influence of ordinary Portland cement (OPC) and reactive and non-reactive mineral additives on the characteristic microstructure and mechanical performance of ultra-high-performance, strain-hardening cementitious composite
Externí odkaz:
https://doaj.org/article/77433b383d3d48229e72d181b2a6a96b
Publikováno v:
Construction and Building Materials. 385:131464
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2973c25d92d4db9ccde3a3202208f34b
https://doi.org/10.1016/j.conbuildmat.2023.131464
https://doi.org/10.1016/j.conbuildmat.2023.131464