Abstract
This paper presents results of an experimental study for concrete column filled poly vinyl chloride (PVC) tubes confined by plain socket with 5.8 & 6.8 mm thicknesses, 102 mm diameter and 100 mm depth. The total of five concrete filled columns using PVC tubes (CFT PVC) was tested to investigate the columns’ behaviour. The column is 700 mm height, 100 mm external diameter and 3.5 mm tube thickness with different thickness of plain socket. The results presented include maximum axial load, plain socket confinement effect, the mode of failure, and lateral PVC strain. The axial load enhancement of PVC-concrete columns confined using plain socket shows an increment of 21.3% up to 55.2% and axial strain from 21% to 40% compared with displacement for control composite columns at 192 kN ultimate load.
Highlights
In building construction, the merits of a structure are based on factors such as availability, structural strength, durability, and workability
Comparison of the ultimate load made between the control specimen of C1 and poly vinyl chloride (PVC) CFT columns attached to the plain socket shows the increment range is in between 21% to 55.2% (Table 4)
This paper reports the results of an experimental program of CFT columns using plasticized polyvinyl (PVC) tubes
Summary
The merits of a structure are based on factors such as availability, structural strength, durability, and workability. The CFT columns have many constructional advantages, such as high energy absorption, economical formwork and high ductility. These advantages are contributed by the effectively confined concrete core; the realistic prediction of the capacity of these columns must consider the confinement effect provided by the steel tube. As for concrete filled steel tube columns, CFST, the steel tube provide permanent formwork for the concrete core, but its superior strength was contributed from the confinement effect of the steel tube itself that may be expected due to its material properties. The contribution of the plain socket in confinement effect, load carrying capacity, ductility and durability of the column were investigated
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