Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Keesin Jeong"'
Publikováno v:
Materials, Vol 17, Iss 6, p 1406 (2024)
Herein, we conducted a comprehensive statistical assessment of the ultrasonic pulse velocity (UPV) method’s effectiveness in predicting concrete strength under diverse conditions, specifically early age, middle age, and high-temperature exposure. T
Externí odkaz:
https://doaj.org/article/ff04aa783d1649a1aec793d4ff8a06c3
Publikováno v:
Materials, Vol 16, Iss 21, p 6850 (2023)
Currently, in order to reduce the greenhouse gases of global warming, research on alternative cement materials is being actively conducted in the construction industry to reduce cement use, and it is judged to be important to evaluate the timing of f
Externí odkaz:
https://doaj.org/article/ffb9e462017c4d5b910b30d5da671552
Publikováno v:
Applied Sciences, Vol 12, Iss 13, p 6644 (2022)
In this study, the mechanical properties of normal concrete (NC) and lightweight concrete (LC) were measured upon exposure to high temperatures (20, 100, 200, 300, 500, and 700 °C). Then, analysis was conducted to predict the residual modulus of ela
Externí odkaz:
https://doaj.org/article/6f3766c78d8b45bd964ddc78a1677d46
Publikováno v:
Materials, Vol 15, Iss 8, p 2952 (2022)
This study classified the strength of normal aggregate concrete (NC) and lightweight aggregate concrete (LC) into three levels (30, 45, and 60 MPa). In particular, the compressive strength, ultrasonic pulse velocity, and elastic modulus were measured
Externí odkaz:
https://doaj.org/article/d251f0f410624529ad59bfb4e7d25550
Publikováno v:
Materials, Vol 14, Iss 20, p 6093 (2021)
The effect of the thermal properties of aggregates on the mechanical properties of high-strength concrete was evaluated under loading and high-temperature conditions. For the concrete, granite was selected as a natural aggregate, and ash-clay and cla
Externí odkaz:
https://doaj.org/article/5b9eba00e4f942ccb5d517cf857c0697
Publikováno v:
Fire Science and Engineering. 37:29-35
In Korea, separate orders for the fire-fighting facility system installation business act have been in effect since September 2020. However, the current research on performance analyses and overseas system reviews remains inadequate for efficient set
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9463db36d9fbe84793bac4fbc2a3d5a
https://doi.org/10.7731/kifse.b692a2bc
https://doi.org/10.7731/kifse.b692a2bc
Publikováno v:
Fire Science and Engineering. 37:75-80
In this study, the effect of non-sintered hwangto on the high-temperature residual mechanical properties of concrete is analyzed. The specimens are classified as NC and HT, which are mixed with 15% and 30% non-sintered hwangto, respectively, and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::712e22e77629c455d239960a29683b49
https://doi.org/10.7731/kifse.498c4224
https://doi.org/10.7731/kifse.498c4224
Publikováno v:
International Journal of Fire Science and Engineering. 37:45-52
Previous studies on the strength degradation of concrete subjected to high temperatures were analyzed. To analyze the effect of the coarse-aggregate type on strength degradation, data from previous studies were collected, and the coarse aggregate use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaedf6e79818043f288f9ac711d1d838
https://doi.org/10.7731/kifse.f5c2b512
https://doi.org/10.7731/kifse.f5c2b512
Publikováno v:
International Journal of Fire Science and Engineering. 36:1-12
Dust and fine dust exist in various forms and can lead to various problems such as dust explosion and air pollution. To reduce them, recently, research on electrospray electric precipitation, among various dust collection methods, has been actively c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88b6974f559236facb4f87c684389fd9
https://doi.org/10.7731/kifse.75841f94
https://doi.org/10.7731/kifse.75841f94
Publikováno v:
Fire Science and Engineering. 36:76-82
This study analyzed the effect of the hardness of coarse aggregates mixed in concrete on the ultrasonic pulse velocity (UPV) and elastic modulus after high temperature exposure. Specimens were classified into normal concrete (NC) mixed with normal ag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::876269e61e0f4118128793bce4e21c84
https://doi.org/10.7731/kifse.6456575a
https://doi.org/10.7731/kifse.6456575a