Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads
The use of structural masonry may result in cheaper and faster construction of structures compared with the conventional approach of framed building construction. In Malaysia the supply of houses by both public and private is still far from meeting the demand especially in low cost housing sector...
| Main Author: | |
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| Format: | Thesis |
| Language: | English English |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/6173/1/FK_2008_28.pdf |
| _version_ | 1796967111715717120 |
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| author | Mohamed, Labeed Ahmed |
| author_facet | Mohamed, Labeed Ahmed |
| author_sort | Mohamed, Labeed Ahmed |
| collection | UPM |
| description | The use of structural masonry may result in cheaper and faster construction of
structures compared with the conventional approach of framed building construction.
In Malaysia the supply of houses by both public and private is still far from meeting
the demand especially in low cost housing sector. Hence the search for fast, safe and
economical masonry system becomes a necessity to meet the demand for housing in
Malaysia. Interlocking block system is promoted, as a new building technique that
may result to more economical construction. The main concept of interlocking
hollow block system is the elimination of the mortar layers and instead the blocks are
interconnected through providing key connection (protrusion and groove). The use of
interlocking load bearing hollow blocks in building construction will speed up the
construction process as a result of the elimination of mortar layers. Furthermore, due
to the self-aligning features of the interlocking hollow blocks, the walls can be
assembled much faster by unskilled workers compared to mortar masonry
construction.Putra block is an interlocking block system used in the construction of load bearing
wall (Waleed et aL(2005)). The structural behavior of the walls constructed using
Putra block was presented by Jaafar et al. (2006) and Waleed et al. (2007). The
structural behavior of interlocking hollow blocks load bearing wall is not fully
explored due limited research on its structural response under the applied load till
failure. Moreover, the effect of window opening on the structural response of the
interlocking wall especially on the stress distribution in the wall and its failure
mechanism are not yet addressed and require special sttention for safe and accurate
design of walls.
This study presents experimental testing of interlocking hollow block walls having
window opening under concentric and eccentric vertical compressive load. The
experimental testing focuses on the effect of different layout of the reinforced
stiffener around the opening on the structural response of the wall and its failure
mechanism.
Eight wall panels having dimemion of 1.5 m x 1.6 m (length x height) with a
rectangular opening occupying 20% of the wall area were assembled using Putra
block. The specimens are differing in the layout of reinforced stiffener around the
opening. These wall specimens were subjected to a vertical load of 0 mm, 40 mrn,
and 55 rnm eccentricities. The response was investigated in terms of deformation
characteristics, strain variation, failure load and failure mechanism.
The results indicate that the responses of interlocking hollow block wall with
opening are similar to the bonded masonry system. The presence of window opening of an area equal to 20% of the surface area of the wall may reduce the axial
efficiency of the interlocking wall up to 50% of the solid wall capacity. Furthermore,
the layout of the stiffeners plays a significant effect in the structural response of the
interlocking wall and leads to completely different failure mechanism of the wall. |
| first_indexed | 2024-03-06T07:09:08Z |
| format | Thesis |
| id | upm.eprints-6173 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:09:08Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | upm.eprints-61732023-10-12T03:45:53Z http://psasir.upm.edu.my/id/eprint/6173/ Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads Mohamed, Labeed Ahmed The use of structural masonry may result in cheaper and faster construction of structures compared with the conventional approach of framed building construction. In Malaysia the supply of houses by both public and private is still far from meeting the demand especially in low cost housing sector. Hence the search for fast, safe and economical masonry system becomes a necessity to meet the demand for housing in Malaysia. Interlocking block system is promoted, as a new building technique that may result to more economical construction. The main concept of interlocking hollow block system is the elimination of the mortar layers and instead the blocks are interconnected through providing key connection (protrusion and groove). The use of interlocking load bearing hollow blocks in building construction will speed up the construction process as a result of the elimination of mortar layers. Furthermore, due to the self-aligning features of the interlocking hollow blocks, the walls can be assembled much faster by unskilled workers compared to mortar masonry construction.Putra block is an interlocking block system used in the construction of load bearing wall (Waleed et aL(2005)). The structural behavior of the walls constructed using Putra block was presented by Jaafar et al. (2006) and Waleed et al. (2007). The structural behavior of interlocking hollow blocks load bearing wall is not fully explored due limited research on its structural response under the applied load till failure. Moreover, the effect of window opening on the structural response of the interlocking wall especially on the stress distribution in the wall and its failure mechanism are not yet addressed and require special sttention for safe and accurate design of walls. This study presents experimental testing of interlocking hollow block walls having window opening under concentric and eccentric vertical compressive load. The experimental testing focuses on the effect of different layout of the reinforced stiffener around the opening on the structural response of the wall and its failure mechanism. Eight wall panels having dimemion of 1.5 m x 1.6 m (length x height) with a rectangular opening occupying 20% of the wall area were assembled using Putra block. The specimens are differing in the layout of reinforced stiffener around the opening. These wall specimens were subjected to a vertical load of 0 mm, 40 mrn, and 55 rnm eccentricities. The response was investigated in terms of deformation characteristics, strain variation, failure load and failure mechanism. The results indicate that the responses of interlocking hollow block wall with opening are similar to the bonded masonry system. The presence of window opening of an area equal to 20% of the surface area of the wall may reduce the axial efficiency of the interlocking wall up to 50% of the solid wall capacity. Furthermore, the layout of the stiffeners plays a significant effect in the structural response of the interlocking wall and leads to completely different failure mechanism of the wall. 2008-06 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/6173/1/FK_2008_28.pdf Mohamed, Labeed Ahmed (2008) Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads. Masters thesis, Universiti Putra Malaysia. Masonry Mortar English |
| spellingShingle | Masonry Mortar Mohamed, Labeed Ahmed Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads |
| title | Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads |
| title_full | Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads |
| title_fullStr | Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads |
| title_full_unstemmed | Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads |
| title_short | Structural Behaviour Of Interlocking Hollow Block Concrete Wall With Subjected To Axial and Eccentric Loads |
| title_sort | structural behaviour of interlocking hollow block concrete wall with subjected to axial and eccentric loads |
| topic | Masonry Mortar |
| url | http://psasir.upm.edu.my/id/eprint/6173/1/FK_2008_28.pdf |
| work_keys_str_mv | AT mohamedlabeedahmed structuralbehaviourofinterlockinghollowblockconcretewallwithsubjectedtoaxialandeccentricloads |