Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers
An analytical investigation using ABAQUS/Explicit dynamic analysis was carried out to investigate the effect of using Micro/Nano silica in the presence of steel fibers on improving the dynamic response of reinforced concrete beams. According to the results of Magnusson and Hallgren's experiment...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2021-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3081 |
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| author | Mahmoud Nawar Kareem El-Awady Hamdy Shehab Ahmed Eisa |
| author_facet | Mahmoud Nawar Kareem El-Awady Hamdy Shehab Ahmed Eisa |
| author_sort | Mahmoud Nawar |
| collection | DOAJ |
| description | An analytical investigation using ABAQUS/Explicit dynamic analysis was carried out to investigate the effect of using Micro/Nano silica in the presence of steel fibers on improving the dynamic response of reinforced concrete beams. According to the results of Magnusson and Hallgren's experimental investigation, the FE model has been well verified and calibrated. The finite element test program was extended further to study the effect of tensile reinforcement ratio by (0.5%, 0.78%, and 1.13%) comparing with the enhancement of concrete’s material on the behavior of tested R.C beams under blast loading. The results where compared in terms of changes in the max deflection at mid-span and flexural toughness values. The results showed that the combination between the compressive and flexural characteristic of concrete is necessary in case of high steel reinforcement ratio to reduce the brittle behavior of the R.C structure element, especially when the R.C elements exposed to a high strain rate loading due to the addition value of (DIF) for steel reinforcement properties which make the element stiffer than usual, compared with quasi-static loading condition. |
| format | Article |
| id | doaj-art-b1fc9294745446d680f6e3ed9dea796f |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2021-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-b1fc9294745446d680f6e3ed9dea796f2024-12-02T05:42:35ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932021-06-011557Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel FibersMahmoud Nawar0Kareem El-Awady1Hamdy Shehab2Ahmed Eisa3Zagazig University, Department of Structural Engineering, Egypt. Zagazig University, Department of Structural Engineering, Egypt. Zagazig University, Department of Structural Engineering, Egypt. Zagazig University, Department of Structural Engineering, Egypt. An analytical investigation using ABAQUS/Explicit dynamic analysis was carried out to investigate the effect of using Micro/Nano silica in the presence of steel fibers on improving the dynamic response of reinforced concrete beams. According to the results of Magnusson and Hallgren's experimental investigation, the FE model has been well verified and calibrated. The finite element test program was extended further to study the effect of tensile reinforcement ratio by (0.5%, 0.78%, and 1.13%) comparing with the enhancement of concrete’s material on the behavior of tested R.C beams under blast loading. The results where compared in terms of changes in the max deflection at mid-span and flexural toughness values. The results showed that the combination between the compressive and flexural characteristic of concrete is necessary in case of high steel reinforcement ratio to reduce the brittle behavior of the R.C structure element, especially when the R.C elements exposed to a high strain rate loading due to the addition value of (DIF) for steel reinforcement properties which make the element stiffer than usual, compared with quasi-static loading condition.https://www.fracturae.com/index.php/fis/article/view/3081Reinforced concreteMicro silicaNano silicaBlast loadFlexural toughnessSteel fibers |
| spellingShingle | Mahmoud Nawar Kareem El-Awady Hamdy Shehab Ahmed Eisa Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers Fracture and Structural Integrity Reinforced concrete Micro silica Nano silica Blast load Flexural toughness Steel fibers |
| title | Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers |
| title_full | Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers |
| title_fullStr | Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers |
| title_full_unstemmed | Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers |
| title_short | Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers |
| title_sort | enhancement of blast resistance of r c beams using micro nano silica in presence of steel fibers |
| topic | Reinforced concrete Micro silica Nano silica Blast load Flexural toughness Steel fibers |
| url | https://www.fracturae.com/index.php/fis/article/view/3081 |
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