Performance of Self Compacting Concrete Used In Congested Reinforcement Structural Element
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Date
2018-06
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Abstract
Self-Compacting Concrete (SCC) is a concrete which can be placed under its own weight
without vibration. Whereas Vibrated Concrete (VC) is a concrete which is compacted by
means of mechanical vibration. SCC exceeds the current limitations of VC in providing
superior material properties, namely passing ability through dense reinforcement resulting in
fewer material defects and increasing durability. SCC can be considered as a feasible option
where limitations of VC in relation to achieving full compaction of congested reinforcement
structural elements.
This paper compares the structural performance of congested reinforcement beams cast with
Self Compacting Concrete (SCC) and identical beams cast with Vibrated Concrete (VC). Two
different geometric cross-section and length, different longitudinal reinforcement ratios, and
same stirrup configuration for all specimens were used.
A total of 12 beams: 6 were tested in the experimental investigation (4 were cast with SCC
and 2 were cast with VC in reinforced sections) and 6 (3 for each type of concrete) were
investigated using software simulation. The results were compared with design performance
prediction as per Euro code2. All beam specimens were tested under monotonic mid-span
concentrated loading to determine the overall structural behavior of reinforced concrete
beams.
The test results on reinforced beams showed that SCC concrete performed better in
reinforcement congested beam element than the referenced VC concrete beam element. The
study also showed that the difference in mix composition of SCC from that of VC concrete
would have no effects on the overall load-deflection response of reinforced concrete (RC)
beam.
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Keywords
Self Compacting Concrete, Vibrated Concrete (VC), reinforcement structural elements