Strengthening of masonry walls is required to prevent
failure and collapse during major earthquake or addition of extra load on
buildings. Strengthening of masonry walls also may be required during
rehabilitation of buildings.
Due to severe earthquake or inclusion of additional
weight on buildings, the building may fall or collapse. To get rid of this type
of issue, the masonry walls should be reinforced perfectly. Reinforcing of
masonry walls is also needed throughout rehabilitation of buildings.
Unreinforced masonry walls contain sufficient
compressive strength, but they are breakable and very fragile under the
influence of lateral loads which lead to tension in walls. On every occasion,
tension forces operate on a masonry wall, it has a tendency for being cracked.
Cracking of masonry walls happen because of foundation
settlement, all through earthquakes, employment of lateral loads. Cracking for
masonry wall may occur for different reasons but these can lead to collapse of
wall entirely.
Under load bearing masonry buildings, loads from the
building is delivered through walls and failure and collapse of such masonry
walls can result in collapsing of the entire building.
For reinforced concrete framed structures, though
loads are delivered through columns, but if any earthquake occurs, these walls
may develop cracks and fall.
Generally half brick thick masonry walls are applied
as partitions in the interior of RC framed buildings. These half brick masonry
walls are insecure to withstand the lateral forces throughout earthquake.
Beyond plane strengthening of partitions can be accumulated jointly with
lateral strengthening of building by arranging reinforced concrete jackets to
the partitions.
To resist the collapsing of masonry walls throughout
earthquake, it is recommended to utilize reinforced brick masonry walls in new
construction. Prevailing masonry walls are also reinforced with the use of
reinforced concrete jackets on one or both sides of the walls.
Masonry Wall Strengthening Process:
The following processes are applied to strengthen Masonry walls:
1. Arranging reinforced concrete jackets on one or
both faces of walls.
2. Apply FRP Structural Repointing for strengthening
of masonry walls.
To read the complete article, go through the following
link
concretecivil.com
concretecivil.com
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Published By
Rajib Dey
www.constructioncost.co
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