Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Dongho Jeon"'
Autor:
Dongho Jeon, Seyoon Yoon
Publikováno v:
Buildings, Vol 14, Iss 9, p 2654 (2024)
Electrical resistance tomography (ERT) is gaining recognition as an effective, affordable, and nondestructive tool for monitoring and imaging concrete structures. This paper discusses ERT’s applications, including crack detection, moisture ingress
Externí odkaz:
https://doaj.org/article/47f8867f46b14fec860bbe6f8a2e1cc2
Autor:
Juan Yu, Sungwon Sim, Haemin Song, Dohoon Kim, Kyungcheol Jang, Dongho Jeon, Seung Cho, Jae Eun Oh
Publikováno v:
International Journal of Concrete Structures and Materials, Vol 17, Iss 1, Pp 1-11 (2023)
Abstract This study examined the influence of the crystallinity of added nano-alumina on the sulfate resistance of ordinary Portland cement (OPC) paste. Two crystalline types of nano-aluminas (α-and γ-phase) were incorporated in cement pastes, whic
Externí odkaz:
https://doaj.org/article/86ba05f85e45430eba9286187cf99085
Publikováno v:
International Journal of Concrete Structures and Materials, Vol 16, Iss 1, Pp 1-15 (2022)
Abstract This study investigated the deteriorations of precast prestressed concrete (PSC) ties that were used for 15 years in high-speed railways in Korea and its damaging mechanism. The collected PSC ties with longitudinal cracks on sides and map cr
Externí odkaz:
https://doaj.org/article/508f83c8e2894c4688e821d3ca2d5dc3
Publikováno v:
Materials, Vol 16, Iss 3, p 920 (2023)
Calcium sulfoaluminate (CSA) cement is a promising solution for reducing CO2 emissions. While previous studies have attempted to investigate the usefulness of CSA cement via various approaches, early age nondestructive evaluations for the setting and
Externí odkaz:
https://doaj.org/article/f9f73a05df774b15997979071a3ff9e0
Publikováno v:
Applied Sciences, Vol 13, Iss 1, p 335 (2022)
Diagnostic technologies using X-rays and/or acoustic emissions for concrete infrastructures containing internal pores, defects, and cracks have attracted considerable interest. However, computerized tomography (CT) for concrete is challenging due to
Externí odkaz:
https://doaj.org/article/68df6addc8bd45ec83d9c43816870604
Publikováno v:
Materials, Vol 15, Iss 1, p 271 (2021)
This study examined the mechanical and durability properties of CaO-activated ground-granulated blast-furnace slag (GGBFS) concretes made with three different additives (CaCl2, Ca(HCOO)2, and Ca(NO3)2) and compared their properties to the concrete ma
Externí odkaz:
https://doaj.org/article/c4b19517136f4b7983c56d33d28f5425
Publikováno v:
Materials, Vol 13, Iss 24, p 5598 (2020)
This study investigated the use of coal bottom ash (bottom ash) and CaO-CaCl2-activated ground granulated blast furnace slag (GGBFS) binder in the manufacturing of artificial fine aggregates using cold-bonded pelletization. Mixture samples were prepa
Externí odkaz:
https://doaj.org/article/b8cd48d8c93b4499a37d712148d3c419
Autor:
Hwan Lee, Dongho Jeon, Haemin Song, Sung Won Sim, Dohoon Kim, Juan Yu, Kyung Hwa Cho, Jae Eun Oh
Publikováno v:
Applied Sciences, Vol 9, Iss 23, p 5044 (2019)
This study explored the possibility of using reverse osmosis (RO) reject water as a mixing water for producing cementitious bricks using calcium sulfoaluminate (CSA) cement along with gypsum, and it investigated the changes in the properties of CSA c
Externí odkaz:
https://doaj.org/article/5b9f7d46af4847d188c3102038518d92
Autor:
Sungwon Sim, Hwan Lee, Dongho Jeon, Haemin Song, Woo Sung Yum, Dohoon Kim, Jung-Il Suh, Jae Eun Oh
Publikováno v:
Applied Sciences, Vol 8, Iss 12, p 2515 (2018)
This study explores the combined effect of NaCl and gypsum on the strength of the CaO-activated ground-granulated blast furnace slag (GGBFS) binder system. In the CaO-activated GGBFS system, the incorporation of NaCl without gypsum did not improve th
Externí odkaz:
https://doaj.org/article/2358509b7bb1445cb197905e346db2fc
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fcd5f423a369959e7d8b1c299443cf2
https://doi.org/10.2139/ssrn.4281835
https://doi.org/10.2139/ssrn.4281835