Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Eunjong Ahn"'
Publikováno v:
Sensors, Vol 18, Iss 12, p 4156 (2018)
This study aims to explore the applicability of diffuse ultrasound to the evaluation of water permeability and chloride ion penetrability of cracked concrete. Lab-scale experiments were conducted on disk-shaped concrete specimens, each having a diffe
Externí odkaz:
https://doaj.org/article/8c8a99e5fd1a4f1db1ae61e4bd55cfbe
Publikováno v:
Sensors, Vol 18, Iss 9, p 2793 (2018)
In this paper, we propose an accurate and practical model for the estimation of surface-breaking discontinuity (i.e., crack) depth in concrete through quantitative characterization of surface-wave transmission across the discontinuity. The effects of
Externí odkaz:
https://doaj.org/article/e7d6987cdedc4a1aace8dbe4692f69dc
Publikováno v:
Sensors, Vol 17, Iss 9, p 2052 (2017)
Crack assessment is an essential process in the maintenance of concrete structures. In general, concrete cracks are inspected by manual visual observation of the surface, which is intrinsically subjective as it depends on the experience of inspectors
Externí odkaz:
https://doaj.org/article/e92112f307f74bc4a8c00eacfef1c33b
Autor:
Hyunjun Kim, Sung-Han Sim, Cheol-Gyu Kim, Eunjong Ahn, Myoungsu Shin, Seongwoo Gwon, Sung-Rok Oh
Publikováno v:
Structural Health Monitoring. 21:1661-1677
This study mainly aims to investigate the applicability of the combination of air-coupled surface-wave and computer-vision techniques to the evaluation of self-healing in in situ concrete members. Small-scale beam specimens were made from ordinary co
Publikováno v:
Structural Health Monitoring. 20:500-512
Cracks on concrete structures are an important indicator for assessing concrete durability and structural safety. Although such cracks are typically monitored by manual visual inspection, this method has drawbacks in terms of inspection time, safety,
Publikováno v:
NDT & E International. 104:90-97
Concrete cracks are considered as an important indicator for potential damage and durability and are generally monitored in structural maintenance. A typical repair method in practice for concrete cracks involving with durability issues is to use alt
Publikováno v:
Composites Part B: Engineering. 162:469-483
This study investigated the applicability of calcium sulfoaluminate (CSA)-based cement and superabsorbent polymer (SAP) to the self-healing of modified sulfur composites. Modified sulfur was used as a binder in the sulfur composites. Eight different
Publikováno v:
Construction and Building Materials. 352:129004
Publikováno v:
Construction and Building Materials. 349:128815
Publikováno v:
Ultrasonics. 125
In this study, we investigated the suitability of applying air-coupled ultrasonic diffuse-wave techniques to concrete structures for the evaluation of arbitrarily distributed micro-cracking damage. Air-coupled test results were compared with those ob