Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading
Strengthening existing unreinforced masonry (URM) structures with plaster is a common technique used to improve the structural integrity and durability of buildings. However, using a thin layer of plaster alone may not provide sufficient reinforcement to adequately enhance the URM wall’s resistance...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523005387 |
| _version_ | 1797454667155767296 |
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| author | Ahmed A. Sadoon Madyan A. Al-Shugaa Muhammad K. Rahman Amin Al-Fakih Mohammed A. Al-Osta |
| author_facet | Ahmed A. Sadoon Madyan A. Al-Shugaa Muhammad K. Rahman Amin Al-Fakih Mohammed A. Al-Osta |
| author_sort | Ahmed A. Sadoon |
| collection | DOAJ |
| description | Strengthening existing unreinforced masonry (URM) structures with plaster is a common technique used to improve the structural integrity and durability of buildings. However, using a thin layer of plaster alone may not provide sufficient reinforcement to adequately enhance the URM wall’s resistance to lateral or other types of loading. Therefore, incorporating additional materials, such as steel fibers and nano-silica, into the plaster mix has been explored in this study to further improve the URM wall’s resilience performance. The effect of nano-silica modified steel fibers reinforced (NS-SFR) mortar plastering on the axial and lateral load capacity of concrete masonry walls was experimentally investigated. The investigated URM walls were constructed with a dimension of 830 × 810 × 100 mm (length × width × thickness) using hollow concrete masonry blocks. These walls were categorized as a reference wall, plastered on one side only wall, and plastered on both sides wall. During the experimental testing, each sample was exposed to a combination of precompression and cyclic in-plane loading to assess its shear capacity. The tests also involved closely observing and identifying any cracks or types of failures that occurred. The results of the tests indicated that the walls that were strengthened with NS-SFR mortar exhibited a significant improvement in their compressive strength, shear strength capacity, and stiffness, in comparison to the walls that were not strengthened. Applying NS-SFR mortar as a plaster on the URM wall resulted in significant improvements in both compressive strength and shear capacity. Specifically, for the one-side plastered wall, the use of NS-SFR mortar increased compressive strength and shear capacity by 18.5 % and 40 %, respectively, while for the two sides plastered wall, the increase was even more significant, with improvements of 86.5 % and 132 % in compressive strength and shear capacity, respectively. |
| first_indexed | 2024-03-09T15:40:24Z |
| format | Article |
| id | doaj.art-ed37a6663a854b62b4d42c2942c0ee5e |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:40:24Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-ed37a6663a854b62b4d42c2942c0ee5e2023-11-25T04:48:26ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02358Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loadingAhmed A. Sadoon0Madyan A. Al-Shugaa1Muhammad K. Rahman2Amin Al-Fakih3Mohammed A. Al-Osta4Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Eastern Province, Saudi ArabiaInterdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Eastern Province, Saudi Arabia; Corresponding authors.Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Eastern Province, Saudi ArabiaInterdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Eastern Province, Saudi Arabia; Corresponding authors.Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Eastern Province, Saudi Arabia; Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Eastern Province, Saudi ArabiaStrengthening existing unreinforced masonry (URM) structures with plaster is a common technique used to improve the structural integrity and durability of buildings. However, using a thin layer of plaster alone may not provide sufficient reinforcement to adequately enhance the URM wall’s resistance to lateral or other types of loading. Therefore, incorporating additional materials, such as steel fibers and nano-silica, into the plaster mix has been explored in this study to further improve the URM wall’s resilience performance. The effect of nano-silica modified steel fibers reinforced (NS-SFR) mortar plastering on the axial and lateral load capacity of concrete masonry walls was experimentally investigated. The investigated URM walls were constructed with a dimension of 830 × 810 × 100 mm (length × width × thickness) using hollow concrete masonry blocks. These walls were categorized as a reference wall, plastered on one side only wall, and plastered on both sides wall. During the experimental testing, each sample was exposed to a combination of precompression and cyclic in-plane loading to assess its shear capacity. The tests also involved closely observing and identifying any cracks or types of failures that occurred. The results of the tests indicated that the walls that were strengthened with NS-SFR mortar exhibited a significant improvement in their compressive strength, shear strength capacity, and stiffness, in comparison to the walls that were not strengthened. Applying NS-SFR mortar as a plaster on the URM wall resulted in significant improvements in both compressive strength and shear capacity. Specifically, for the one-side plastered wall, the use of NS-SFR mortar increased compressive strength and shear capacity by 18.5 % and 40 %, respectively, while for the two sides plastered wall, the increase was even more significant, with improvements of 86.5 % and 132 % in compressive strength and shear capacity, respectively.http://www.sciencedirect.com/science/article/pii/S2214509523005387Masonry wallHollow concrete blockCyclic loadingNano-modified MortarFiber-reinforced mortar |
| spellingShingle | Ahmed A. Sadoon Madyan A. Al-Shugaa Muhammad K. Rahman Amin Al-Fakih Mohammed A. Al-Osta Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading Case Studies in Construction Materials Masonry wall Hollow concrete block Cyclic loading Nano-modified Mortar Fiber-reinforced mortar |
| title | Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading |
| title_full | Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading |
| title_fullStr | Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading |
| title_full_unstemmed | Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading |
| title_short | Enhancing unreinforced masonry wall resilience through nano-silica modified steel fiber reinforced mortar: A study on in-plane cyclic loading |
| title_sort | enhancing unreinforced masonry wall resilience through nano silica modified steel fiber reinforced mortar a study on in plane cyclic loading |
| topic | Masonry wall Hollow concrete block Cyclic loading Nano-modified Mortar Fiber-reinforced mortar |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523005387 |
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