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 experimen...

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Autores principales:	Mahmoud Nawar, Kareem El-Awady, Hamdy Shehab, Ahmed Eisa
Formato:	article
Lenguaje:	EN
Publicado:	Gruppo Italiano Frattura 2021
Materias:	Reinforced concrete Micro silica Nano silica Blast load Flexural toughness Steel fibers Mechanical engineering and machinery TJ1-1570 Structural engineering (General) TA630-695
Acceso en línea:	https://doaj.org/article/b1fc9294745446d680f6e3ed9dea796f
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spelling	oai:doaj.org-article:b1fc9294745446d680f6e3ed9dea796f2021-11-26T10:56:15ZEnhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers 1971-8993https://doaj.org/article/b1fc9294745446d680f6e3ed9dea796f2021-06-01T00:00:00Zhttps://www.fracturae.com/index.php/fis/article/view/3081https://doaj.org/toc/1971-8993 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. Mahmoud NawarKareem El-AwadyHamdy ShehabAhmed EisaGruppo Italiano FratturaarticleReinforced concreteMicro silicaNano silicaBlast loadFlexural toughnessSteel fibersMechanical engineering and machineryTJ1-1570Structural engineering (General)TA630-695ENFrattura ed Integrità Strutturale, Vol 15, Iss 57 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Reinforced concrete Micro silica Nano silica Blast load Flexural toughness Steel fibers Mechanical engineering and machinery TJ1-1570 Structural engineering (General) TA630-695
spellingShingle	Reinforced concrete Micro silica Nano silica Blast load Flexural toughness Steel fibers Mechanical engineering and machinery TJ1-1570 Structural engineering (General) TA630-695 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
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
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
title	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_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_sort	enhancement of blast resistance of r.c beams using micro/nano silica in presence of steel fibers
publisher	Gruppo Italiano Frattura
publishDate	2021
url	https://doaj.org/article/b1fc9294745446d680f6e3ed9dea796f
work_keys_str_mv	AT mahmoudnawar enhancementofblastresistanceofrcbeamsusingmicronanosilicainpresenceofsteelfibers AT kareemelawady enhancementofblastresistanceofrcbeamsusingmicronanosilicainpresenceofsteelfibers AT hamdyshehab enhancementofblastresistanceofrcbeamsusingmicronanosilicainpresenceofsteelfibers AT ahmedeisa enhancementofblastresistanceofrcbeamsusingmicronanosilicainpresenceofsteelfibers
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Enhancement of Blast Resistance of R.C Beams Using Micro/Nano Silica in Presence of Steel Fibers

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