High-Performance Masonry Walls for Energy and Resource Efficient Building Envelopes
(2025) 18th International Brick and Block Masonry Conference, IB2MaC 2024 In Lecture Notes in Civil Engineering 614. p.44-61- Abstract
Externally bonded reinforcement (EBR) was used to increase load bearing capacity of light weight aggregate concrete (LWA) masonry walls subjected to eccentric axial compression. Ladder type masonry reinforcement, high strength steel wire strips and glass fiber mesh were used for strengthening of eleven, 2.4 m high, 0.5 m long and 0.1 m thick walls. The reinforcement was applied on the dry wall surface and subsequently embedded in mortar, a procedure that saves labor time. The walls were subjected to axial eccentric loading, with an eccentricity to wall thickness ratio between 0.18 and 0.20. Six walls failed through local compression (crushing) at the loading plate, four in flexural compression while one in flexural tension. The walls... (More)
Externally bonded reinforcement (EBR) was used to increase load bearing capacity of light weight aggregate concrete (LWA) masonry walls subjected to eccentric axial compression. Ladder type masonry reinforcement, high strength steel wire strips and glass fiber mesh were used for strengthening of eleven, 2.4 m high, 0.5 m long and 0.1 m thick walls. The reinforcement was applied on the dry wall surface and subsequently embedded in mortar, a procedure that saves labor time. The walls were subjected to axial eccentric loading, with an eccentricity to wall thickness ratio between 0.18 and 0.20. Six walls failed through local compression (crushing) at the loading plate, four in flexural compression while one in flexural tension. The walls exhibited limited second order deflections, which partly explains the high frequency of compressive failures. While the experimentally and analytically determined deflection of the walls shows good agreement, the same does not apply to the bending moments. The experimentally deduced bending moment capacity was significantly larger than the analytically deduced bending moment capacity. The possible reasons for this difference are discussed. By using EBR, the vertical load bearing capacity of LWA masonry walls can be enhanced by 30–150%. Compared to existing masonry wall solutions, the thickness of load bearing LWA masonry walls strengthened with EBR can be reduced by 40–60 mm, down to a thickness of 110 mm. The new technique is currently tested in three real-world pilot projects.
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- author
- Molnár, Miklós LU ; Niklewski, Jonas LU ; Björnsson, Ivar LU ; Carlsvärd, Christian and Gustavsson, Tomas LU
- organization
- publishing date
- 2025
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Eccentric axial compression, Experimental, Externally Bonded Reinforcement (EBR), Light Weight Aggregate (LWA) concrete masonry
- host publication
- 18th International Brick and Block Masonry Conference - Proceedings of IBMaC 2024 - Volume 2
- series title
- Lecture Notes in Civil Engineering
- editor
- Milani, Gabriele and Ghiassi, Bahman
- volume
- 614
- pages
- 18 pages
- publisher
- Springer Science and Business Media B.V.
- conference name
- 18th International Brick and Block Masonry Conference, IB2MaC 2024
- conference location
- Birmingham, United Kingdom
- conference dates
- 2024-07-21 - 2024-07-24
- external identifiers
-
- scopus:85218439130
- ISSN
- 2366-2565
- 2366-2557
- ISBN
- 9783031733093
- DOI
- 10.1007/978-3-031-73310-9_4
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
- id
- 7ff3f991-9150-4850-a3f0-964e1c52db36
- date added to LUP
- 2025-03-19 21:52:29
- date last changed
- 2025-07-10 06:57:29
@inproceedings{7ff3f991-9150-4850-a3f0-964e1c52db36,
abstract = {{<p>Externally bonded reinforcement (EBR) was used to increase load bearing capacity of light weight aggregate concrete (LWA) masonry walls subjected to eccentric axial compression. Ladder type masonry reinforcement, high strength steel wire strips and glass fiber mesh were used for strengthening of eleven, 2.4 m high, 0.5 m long and 0.1 m thick walls. The reinforcement was applied on the dry wall surface and subsequently embedded in mortar, a procedure that saves labor time. The walls were subjected to axial eccentric loading, with an eccentricity to wall thickness ratio between 0.18 and 0.20. Six walls failed through local compression (crushing) at the loading plate, four in flexural compression while one in flexural tension. The walls exhibited limited second order deflections, which partly explains the high frequency of compressive failures. While the experimentally and analytically determined deflection of the walls shows good agreement, the same does not apply to the bending moments. The experimentally deduced bending moment capacity was significantly larger than the analytically deduced bending moment capacity. The possible reasons for this difference are discussed. By using EBR, the vertical load bearing capacity of LWA masonry walls can be enhanced by 30–150%. Compared to existing masonry wall solutions, the thickness of load bearing LWA masonry walls strengthened with EBR can be reduced by 40–60 mm, down to a thickness of 110 mm. The new technique is currently tested in three real-world pilot projects.</p>}},
author = {{Molnár, Miklós and Niklewski, Jonas and Björnsson, Ivar and Carlsvärd, Christian and Gustavsson, Tomas}},
booktitle = {{18th International Brick and Block Masonry Conference - Proceedings of IBMaC 2024 - Volume 2}},
editor = {{Milani, Gabriele and Ghiassi, Bahman}},
isbn = {{9783031733093}},
issn = {{2366-2565}},
keywords = {{Eccentric axial compression; Experimental; Externally Bonded Reinforcement (EBR); Light Weight Aggregate (LWA) concrete masonry}},
language = {{eng}},
pages = {{44--61}},
publisher = {{Springer Science and Business Media B.V.}},
series = {{Lecture Notes in Civil Engineering}},
title = {{High-Performance Masonry Walls for Energy and Resource Efficient Building Envelopes}},
url = {{http://dx.doi.org/10.1007/978-3-031-73310-9_4}},
doi = {{10.1007/978-3-031-73310-9_4}},
volume = {{614}},
year = {{2025}},
}