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183770

IMPROVING CONCRETE INFRASTRUCTURE PROTECTION USING DIFFERENT GRID TYPES AGAINST IMPACT LOADS

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Last updated: 28 Dec 2024

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Abstract

Protection  of  existing  reinforced  concrete  structures  against  impact  loads  caused  by  blast  has become a major concern of designers, engineers and security authorities. The release of high speed loads such as explosives can generate high pressures on the structures resulting in fragmentation that can lead to serious damage to the asset and injuries and death to people. The  main  objective  of  this  paper  is  to  report  the  results  of  a  comprehensive  experimental investigation performed on reinforced concrete panels of 600 x 600 x 100 mm, retrofitted with different  grids  including  poly-propylene,  poly-ethylene  and  steel  meshes.  The testing program includes applying impact tests utilizing a falling weight test facility and fragmentation simulation using special air gun test facility. Tests  results  and information  including deflections,  penetration  measurements  were gathered  in addition to taking pictures and videos which were used to calculate applied and absorbed kinetic energy,  penetration   depth  after  each  loading  step  and  the  weight and speed  of  concrete fragmentations during the tests.  The results and analysis of the data and observations showed that the concrete panels retrofitted with combination of steel mesh and poly-ethylene grid provided the most promising retrofitting protection when compared with other options. The results provide an economic and effective technique for improving the protection of existing governmental and buildings of critical importance.

Keywords

Concrete structure, impact, Penetration, Retrofitting, Steel Mesh And Non- Metallic Grids

Authors

First Name

Muslim

Last Name

Majeed

MiddleName

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Affiliation

Carleton University, Department of Civil and Environmental Engineering, Ottawa, Canada

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Orcid

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Volume

54

Article Issue

1

Related Issue

26046

Issue Date

2015-12-01

Receive Date

2021-07-13

Publish Date

2015-12-01

Page Start

7

Page End

2

Print ISSN

1110-1253

Online ISSN

2735-5500

Article File

EGSEN_Volume 54_Issue 1_Pages 7-2.pdf

PDF . 864.4kB

Link

https://egsen.journals.ekb.eg/article_183770.html

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https://egsen.journals.ekb.eg/service?article_code=183770

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8

Type

Scientific and technological

Type Code

1,881

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Engineers

Publication Link

https://egsen.journals.ekb.eg/

MainTitle

IMPROVING CONCRETE INFRASTRUCTURE PROTECTION USING DIFFERENT GRID TYPES AGAINST IMPACT LOADS

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Article

Created At

23 Jan 2023