Strengthening of RC beams by ferrocement made with unconventional concrete

Some countries in South Asia has very limited availability of natural stones due to geological features, therefore, most of the concrete buildings of the past are made with burnt clay brick aggregates whose strength is rather low those are more vulnerable to collapse due to any extreme loads. Howeve...

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Main Authors: Md Jihad Miah, Mohammad Shamim Miah, Walid Alam, Lo Monte, Francesco, Li, Ye
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/142562
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1425622020-06-24T06:38:18Z Strengthening of RC beams by ferrocement made with unconventional concrete Md Jihad Miah Mohammad Shamim Miah Walid Alam Lo Monte, Francesco Li, Ye School of Civil and Environmental Engineering Engineering::Civil engineering Unconventional Concrete Bending Some countries in South Asia has very limited availability of natural stones due to geological features, therefore, most of the concrete buildings of the past are made with burnt clay brick aggregates whose strength is rather low those are more vulnerable to collapse due to any extreme loads. However, ferrocement strengthening has several advantages such as good mechanical performance, cost-effectiveness, locally availability of the materials, and simplicity, this latter making available workmanship able to implement such technique (aspect which is very important in developing countries such as Bangladesh). Hence, the paper deals with the efficacy of ferrocement technique in improving the performance of reinforced concrete beams made in low-strength concrete (beam width 230 mm, height 230 mm, and length 2135 mm). The beams are made with unconventional concrete whose strength is about 12.5–13.0 MPa. The flexural tests are performed experimentally and numerically via the finite element software ABAQUS by considering the following loading configurations: (i) 2 point loads placed at L/3, (ii) 2 point loads are to the support, (iii) 2 point loads close to the mid-span, and (iv) 1 load next to the support and 1 load on the mid-span. The experimental results have shown that unsymmetrical loading decreases the overall load carrying capacity and increases the deformability due to the localization of the damage. The ferrocement beams reinforced by steel wire mesh exhibits high ultimate load carrying capacity and more ductile behavior. The outcome of this research can be used for future modeling and for the development of appropriate design guidelines on the strengthening of concrete structures dealing with different loading conditions. Published version 2020-06-24T06:38:18Z 2020-06-24T06:38:18Z 2019 Journal Article Md Jihad Miah, Mohammad Shamim Miah, Walid Alam, Lo Monte, F., & Li, Y. (2019). Strengthening of RC beams by ferrocement made with unconventional concrete. Magazine of Civil Engineering, 89(5), 94-105. doi:10.18720/MCE.89.8 2071-0305 https://hdl.handle.net/10356/142562 10.18720/MCE.89.8 2-s2.0-85077746151 5 89 94 105 en Magazine of Civil Engineering © 2019 Miah, M.J., Miah, M.S., Alam, W.B., Lo Monte, F., Li, Y. This open access article is licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Civil engineering
Unconventional Concrete
Bending
spellingShingle Engineering::Civil engineering
Unconventional Concrete
Bending
Md Jihad Miah
Mohammad Shamim Miah
Walid Alam
Lo Monte, Francesco
Li, Ye
Strengthening of RC beams by ferrocement made with unconventional concrete
description Some countries in South Asia has very limited availability of natural stones due to geological features, therefore, most of the concrete buildings of the past are made with burnt clay brick aggregates whose strength is rather low those are more vulnerable to collapse due to any extreme loads. However, ferrocement strengthening has several advantages such as good mechanical performance, cost-effectiveness, locally availability of the materials, and simplicity, this latter making available workmanship able to implement such technique (aspect which is very important in developing countries such as Bangladesh). Hence, the paper deals with the efficacy of ferrocement technique in improving the performance of reinforced concrete beams made in low-strength concrete (beam width 230 mm, height 230 mm, and length 2135 mm). The beams are made with unconventional concrete whose strength is about 12.5–13.0 MPa. The flexural tests are performed experimentally and numerically via the finite element software ABAQUS by considering the following loading configurations: (i) 2 point loads placed at L/3, (ii) 2 point loads are to the support, (iii) 2 point loads close to the mid-span, and (iv) 1 load next to the support and 1 load on the mid-span. The experimental results have shown that unsymmetrical loading decreases the overall load carrying capacity and increases the deformability due to the localization of the damage. The ferrocement beams reinforced by steel wire mesh exhibits high ultimate load carrying capacity and more ductile behavior. The outcome of this research can be used for future modeling and for the development of appropriate design guidelines on the strengthening of concrete structures dealing with different loading conditions.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Md Jihad Miah
Mohammad Shamim Miah
Walid Alam
Lo Monte, Francesco
Li, Ye
format Article
author Md Jihad Miah
Mohammad Shamim Miah
Walid Alam
Lo Monte, Francesco
Li, Ye
author_sort Md Jihad Miah
title Strengthening of RC beams by ferrocement made with unconventional concrete
title_short Strengthening of RC beams by ferrocement made with unconventional concrete
title_full Strengthening of RC beams by ferrocement made with unconventional concrete
title_fullStr Strengthening of RC beams by ferrocement made with unconventional concrete
title_full_unstemmed Strengthening of RC beams by ferrocement made with unconventional concrete
title_sort strengthening of rc beams by ferrocement made with unconventional concrete
publishDate 2020
url https://hdl.handle.net/10356/142562
_version_ 1681057692059172864