Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Jung-Geun Han"'
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e03164- (2024)
This study investigates the potential benefits of using the 150 nm level Hydrogen Nanobubble Water (HNBW) in cement concrete. Given the significant greenhouse gas emissions associated with the cement and concrete industry, enhancing building material
Externí odkaz:
https://doaj.org/article/909c91332873409f9ff97d6be2e6ff3c
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 5295 (2024)
Critical facilities are generally located in areas with restricted or controlled access, making it difficult for experts to monitor the structural health of enclosed infrastructures. Hence, a case study was conducted in South Korea to evaluate the ap
Externí odkaz:
https://doaj.org/article/fd44b2a967d845b3b0b2e95eecbc3beb
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
Abstract In recent years, minuscule gas bubbles called bulk nanobubbles (BNBs) have drawn increasing attention due to their unique properties and broad applicability in various technological fields, such as biomedical engineering, water treatment, an
Externí odkaz:
https://doaj.org/article/38045a7c85824268bb65bb67551d67e9
Publikováno v:
Case Studies in Construction Materials, Vol 16, Iss , Pp e00781- (2022)
As cement manufacturing is associated with CO2 emissions that contribute to environmental problems, cement usage must be reduced and alternative aggregates must be developed. Thus, we developed and evaluated a mortar that uses feldspar as a fine aggr
Externí odkaz:
https://doaj.org/article/e93b847d181946a4b8b8e1b193c7ece3
Autor:
Sounghyun Lee, Jung-Mann Yun, Jong-Young Lee, Gigwon Hong, Ji-Sun Kim, Dongchan Kim, Jung-Geun Han
Publikováno v:
Applied Sciences, Vol 11, Iss 16, p 7437 (2021)
Most food waste is incinerated and reclaimed in Korea. Due to the development of industry, soil and groundwater pollution are serious. The purpose of this study was to study recycled materials and eco-friendly remediation methods to prevent secondary
Externí odkaz:
https://doaj.org/article/ce9b399a78fa482d98d494e219f662e9
Publikováno v:
Applied Sciences, Vol 11, Iss 10, p 4328 (2021)
The present study purpose was to identify the flow characteristics of the drainage filter considering the characteristics of the landfill site, and to study the basic technology for efficient remediation of heavy metals. To this end, copper heavy met
Externí odkaz:
https://doaj.org/article/8074118fd27c402c8f2f9b7c5a2fea3f
Autor:
Won-Kyung Kim, Gigwon Hong, Young-Ho Kim, Jong-Min Kim, Jin Kim, Jung-Geun Han, Jong-Young Lee
Publikováno v:
Materials, Vol 14, Iss 11, p 2735 (2021)
In this study, highly concentrated hydrogen nanobubble water was utilized as the blending water for cement mortar to improve its compressive and flexural strengths. Highly concentrated nanobubbles can be obtained through osmosis. This concentration w
Externí odkaz:
https://doaj.org/article/140146c0433844f991a4285b99e3c594
Publikováno v:
Materials, Vol 14, Iss 8, p 1823 (2021)
This study analyzed the effects of applying highly concentrated hydrogen nanobubble water (HNBW) on the workability, durability, watertightness, and microstructure of cement mixtures. The number of hydrogen nanobubbles was concentrated twofold to a m
Externí odkaz:
https://doaj.org/article/3aced8af82a94b19957135be2e812f25
Publikováno v:
Applied Sciences, Vol 11, Iss 6, p 2776 (2021)
This paper presents an experimental study on the pullout resistance of a newly improved reinforcement. The applied reinforcement was a smooth steel strip reinforcement with transverse members used to improve the pullout-resistance problems of the smo
Externí odkaz:
https://doaj.org/article/90290bb24eb24de48487dd6336474fff
Publikováno v:
Materials, Vol 13, Iss 18, p 4204 (2020)
In this study, to reduce the use of cement and sand, porous feldspar with excellent economic efficiency was used as a substitute in the heat storage concrete layer. When porous feldspar and four other silicate minerals were used as substitute materia
Externí odkaz:
https://doaj.org/article/719b47c6363c4ac0a189a692bac4eb77