Experimental Study on Blast Resistance of SIFCON

Chun, Pang; Lee, Sang Ho; Cho, Sang-Ho; Lim, Yun Mook

doi:10.3151/jact.11.144

Cited by 11 publications

(3 citation statements)

References 11 publications

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“…Additionally, by applying semantic segmentation in this study, it may be possible to propose a new direction in the evaluation of damage based on the image. For example, it is considered possible to obtain more information from images such as those after SIFCON blast obtained from the author's study (Chun et al 2013), and we are currently prompting the study of these.…”

Section: Resultsmentioning

confidence: 99%

Crack Detection from a Concrete Surface Image Based on Semantic Segmentation Using Deep Learning

Yamane

Chun

2020

ACT

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Due to their wide applicability in inspection of concrete structures, there is considerable interest in the development of automated crack detection method by image processing. However, the accuracy of existing methods tends to be influenced by the existence of traces of tie-rod holes and formworks. In order to reduce these influences, this paper proposes a crack detection method based on semantic segmentation by deep learning. The accuracy of developed method is investigated by the photos of concrete structures with lots of adverse conditions including shadow and dirt, and it is found that not only the crack region could be detected but also the trace of tie-rod holes and formworks could be removed from the detection result with high accuracy. This paper is the English translation from the authors' previous work [Yamane, T. and Chun, P., (2019). "Crack detection from an image of concrete surface based on semantic segmentation by deep learning."

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Section: Resultsmentioning

confidence: 99%

Crack Detection from a Concrete Surface Image Based on Semantic Segmentation Using Deep Learning

Yamane

Chun

2020

ACT

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“…Although the upper limit of the fiber volume fraction is currently about 3% in conventional FRCC, SIFCON can achieve a value of more than 10%. Regarding the blast resistance of SIFCON, Sun et al (1999) and Chun et al (2013) showed that SIFCON slabs or blocks subjected to contact detonation are excellent at reducing damage. Their conclusions were derived from experimental data in which the entire bottom surface of a SIFCON specimen was supported by a steel sheet or soil, but because stress waves may penetrate steel sheets or soil under such conditions, the spall-reducing performance of SIFCON, which directly leads to secondary injury, was not evaluated in those studies.…”

Section: Introductionmentioning

confidence: 99%

Effects of Fiber Type on Blast Resistance of Slurry-Infiltrated Fiber Concrete Under Contact Detonation

Morishima

Yamaguchi

Shibuya

et al. 2020

ACT

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When designing blast-resistant concrete members that are subject to contact detonation, it is necessary to reduce the spall damage due to tensile stress waves reflected from the back sides of the members. In a previous study, the authors confirmed the good spall-reducing performance under contact detonation of slurry-infiltrated fiber concrete (SIFCON), which is manufactured by first placing fibers into an empty mold and then infiltrating them with grout. In this study, to obtain SIFCON with further improved spall reduction, experimental investigations were conducted regarding the effects of different fiber types on the blast resistance of SIFCON slabs against contact detonation. Five types of steel fibers and four types of synthetic fibers were employed as reinforcing fibers. The thickness of the SIFCON slabs was fixed at 80 mm, and contact detonation tests were conducted using two amounts of SEP explosives. All of the SIFCON samples investigated reduced the spall damage due to contact detonation more effectively than normal concrete and other conventional fiber reinforced cementitious composites. Furthermore, by using SIFCON with fine straight steel fibers, the spall-limit thickness of the slab could be reduced by 54% or more.

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“…Many studies on a mechanical characteristic of SIFICON were adopted. Increased in the compressive, flexural, and tensile strength was singed for concrete [21][22][23][24]. High volume fiber in the SIFCON significantly improved properties such ductility, toughness, durability, and compressive and flexural strengths [25][26][27][28][29][30].…”

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confidence: 97%

Literature Review of Cement Matrices and Fibers Used in SIFCON

Ahmed,

Jameel,

Al-Taie

et al. 2023

IJSCET

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Conventional concrete is categorized as brittle. As a result, researchers continued working to develop it into a substance having ductile characteristics. Concrete showed remarkable improvement when fiber was incorporated at a ratio of 1-2%. Slurry-infiltrated fiber concrete (SIFCON) allows for the use of up to 20% more fiber when combined with unique cement slurry. Concrete that was produced had increased strength and ductility. The influence of slurry and fiber forms with different volumes on the resistance of concrete to compression, flexural, shear, and bond was the main focus of this review study. The outcomes of several previousinvestigations revealed a significant relationship between the strength of concrete and the slurry mixture, fiber type, and fiber volume. Additionally, it was shown that the majority of research all agreed that certain methods should be followed when employing a volume of more than 5% fiber. These processes entail employing fine-sand less than 1 mm in size to create a suitable cementslurry and replacing up to30% of the cement with fly ash (FA), silica fume (SF), and metakaolin to create a cement slurry capable of penetrating interlocking with fiber of all forms and volumes

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Experimental Study on Blast Resistance of SIFCON

Cited by 11 publications

References 11 publications

Crack Detection from a Concrete Surface Image Based on Semantic Segmentation Using Deep Learning

Crack Detection from a Concrete Surface Image Based on Semantic Segmentation Using Deep Learning

Effects of Fiber Type on Blast Resistance of Slurry-Infiltrated Fiber Concrete Under Contact Detonation

Literature Review of Cement Matrices and Fibers Used in SIFCON

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