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Blasting-Induced Damage Mechanisms and Fragmentation of Concrete Frustums.

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Title: Blasting-Induced Damage Mechanisms and Fragmentation of Concrete Frustums.
Authors: Kang, Gengxin1 (AUTHOR) kanggengxinaaa@163.com, Zhang, Yadong2 (AUTHOR) zhydjs@139.com, Xie, Xingbo3 (AUTHOR) znbxie@126.com, Gu, Wenbin3 (AUTHOR) guwenbin1@aliyun.com, Song, Weiying4 (AUTHOR) 18853856951@163.com, Wang, Mengjin5 (AUTHOR) lgdxwmj@163.com
Source: Journal of Performance of Constructed Facilities. Apr2026, Vol. 40 Issue 2, p1-16. 16p.
Subjects: Blasting, Blast effect, Evolutionary computation, Building demolition, Cracking of concrete, Computational mechanics, Explosions
Abstract: Understanding the blasting effects and mechanisms of finite-sized concrete structures is crucial for optimizing demolition techniques and enhancing emergency rescue operations. This study investigates the blasting mechanisms and effects of concrete frustums under contact explosions through integrated experimental and numerical analyses. Focusing on detonation location variations across the frustum's top surface, the research reveals a failure pattern: the upper half forms a shattered zone characterized by extensive fragmentation due to interactions between tensile wave reflections from top and side surfaces, blast-induced unloading waves, and secondary tensile wave impacts. Conversely, the lower part constitutes a fracture zone developing larger core and surrounding blocks primarily through tensile wave reflections from side and bottom surfaces, where side-reflected waves exert a dominant role. Critical findings demonstrate that detonation positioning significantly influences failure characteristics: central detonations (Point A) generate vertically propagating tensile waves that produce regular prismoid blocks and 58.6% more fragments than off-center detonations (Points B/C). In contrast, oblique tensile wave propagation from off-center detonations creates oblique prismoid blocks. Quantitative analysis reveals significant damage disparities with residual heights showing 26.4% (core) and 18.5% (side) reductions under 4.0 kg charges for central versus off-center detonations. The study further proposes a genetic algorithm–backpropagation neural network model achieving prediction errors controlled below 2.6% for damage characteristic parameters, establishing an efficient tool for blast effect prediction. These findings advance the fundamental understanding of finite-structure fragmentation dynamics and provide actionable guidelines for optimizing demolition strategies in disaster rescue scenarios requiring rapid clearance operations. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 191606965
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Blasting-Induced Damage Mechanisms and Fragmentation of Concrete Frustums.
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  Data: <searchLink fieldCode="AR" term="%22Kang%2C+Gengxin%22">Kang, Gengxin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kanggengxinaaa@163.com</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yadong%22">Zhang, Yadong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> zhydjs@139.com</i><br /><searchLink fieldCode="AR" term="%22Xie%2C+Xingbo%22">Xie, Xingbo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> znbxie@126.com</i><br /><searchLink fieldCode="AR" term="%22Gu%2C+Wenbin%22">Gu, Wenbin</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> guwenbin1@aliyun.com</i><br /><searchLink fieldCode="AR" term="%22Song%2C+Weiying%22">Song, Weiying</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> 18853856951@163.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Mengjin%22">Wang, Mengjin</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> lgdxwmj@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Performance+of+Constructed+Facilities%22">Journal of Performance of Constructed Facilities</searchLink>. Apr2026, Vol. 40 Issue 2, p1-16. 16p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Blasting%22">Blasting</searchLink><br /><searchLink fieldCode="DE" term="%22Blast+effect%22">Blast effect</searchLink><br /><searchLink fieldCode="DE" term="%22Evolutionary+computation%22">Evolutionary computation</searchLink><br /><searchLink fieldCode="DE" term="%22Building+demolition%22">Building demolition</searchLink><br /><searchLink fieldCode="DE" term="%22Cracking+of+concrete%22">Cracking of concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+mechanics%22">Computational mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Explosions%22">Explosions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Understanding the blasting effects and mechanisms of finite-sized concrete structures is crucial for optimizing demolition techniques and enhancing emergency rescue operations. This study investigates the blasting mechanisms and effects of concrete frustums under contact explosions through integrated experimental and numerical analyses. Focusing on detonation location variations across the frustum's top surface, the research reveals a failure pattern: the upper half forms a shattered zone characterized by extensive fragmentation due to interactions between tensile wave reflections from top and side surfaces, blast-induced unloading waves, and secondary tensile wave impacts. Conversely, the lower part constitutes a fracture zone developing larger core and surrounding blocks primarily through tensile wave reflections from side and bottom surfaces, where side-reflected waves exert a dominant role. Critical findings demonstrate that detonation positioning significantly influences failure characteristics: central detonations (Point A) generate vertically propagating tensile waves that produce regular prismoid blocks and 58.6% more fragments than off-center detonations (Points B/C). In contrast, oblique tensile wave propagation from off-center detonations creates oblique prismoid blocks. Quantitative analysis reveals significant damage disparities with residual heights showing 26.4% (core) and 18.5% (side) reductions under 4.0 kg charges for central versus off-center detonations. The study further proposes a genetic algorithm–backpropagation neural network model achieving prediction errors controlled below 2.6% for damage characteristic parameters, establishing an efficient tool for blast effect prediction. These findings advance the fundamental understanding of finite-structure fragmentation dynamics and provide actionable guidelines for optimizing demolition strategies in disaster rescue scenarios requiring rapid clearance operations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Performance of Constructed Facilities is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1061/JPCFEV.CFENG-5221
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 1
    Subjects:
      – SubjectFull: Blasting
        Type: general
      – SubjectFull: Blast effect
        Type: general
      – SubjectFull: Evolutionary computation
        Type: general
      – SubjectFull: Building demolition
        Type: general
      – SubjectFull: Cracking of concrete
        Type: general
      – SubjectFull: Computational mechanics
        Type: general
      – SubjectFull: Explosions
        Type: general
    Titles:
      – TitleFull: Blasting-Induced Damage Mechanisms and Fragmentation of Concrete Frustums.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Kang, Gengxin
      – PersonEntity:
          Name:
            NameFull: Zhang, Yadong
      – PersonEntity:
          Name:
            NameFull: Xie, Xingbo
      – PersonEntity:
          Name:
            NameFull: Gu, Wenbin
      – PersonEntity:
          Name:
            NameFull: Song, Weiying
      – PersonEntity:
          Name:
            NameFull: Wang, Mengjin
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          Dates:
            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 08873828
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            – Type: volume
              Value: 40
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Journal of Performance of Constructed Facilities
              Type: main
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