Flexural behaviour of reinforced concrete slab with opening
An experimental work was conducted to determine the structural performance of oneway reinforced concrete (RC) slabs with rectangular opening. 5 types of RC slabs which consist of 2 panels for each type were tested by four points bending tests. These include one control slab (S1) without opening and...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Published: |
2009
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/372/ http://eprints.uthm.edu.my/372/1/1_full_kohhengboon.pdf |
| Summary: | An experimental work was conducted
to determine the structural performance of oneway
reinforced concrete (RC) slabs with
rectangular opening. 5 types of RC slabs which
consist of 2 panels for each type were tested by
four points bending tests. These include one
control slab (S1) without opening and the other
four (S2, S3, S4 and S5) with rectangular opening
at the centre. S3 slabs were provided with
additional rectangular bars surrounding the
opening. S4 slabs were provided with additional
diagonal bars located at the edges of the opening,
and S5 slabs were provided with additional
rectangular and diagonal bars surrounding the
opening. However, S2 slabs were not provided
with any additional bar at the opening. The test
results indicate that RC slab with opening gave a
reduction of 36% in capacity compared to RC slab
without opening. Among the RC slabs with
opening, S5 achieved the highest capacity but the
effect of additional diagonal bar was not
significant. Pure bending cracks were found at the
bottom slabs between the two concentrated loads. |
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