Non-metallic and natural fibre sheets wrapped in rc short circular column
Abstract
The present study deals about the short circular column of slenderness ratio 3,6,9 and C/S as 150 mm diameter and 450 mm,900 mm,1350mm height. Totally 21 Number of columns are casted. The columns are wrapped using Basalt fiber reinforced polymer, Glass fiber reinforced polymer and jute fiber composites of three layers, four layers and five layers in combination for these specimens the following data are to be obtained, Load vs Deflection, ultimate compressive strength.
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Introduction
General: Many older structures today are in the need of strengthening their existing civil engineering infrastructure. The reasons are deterioration by ageing or corrosion caused by environmental factors, load increase because of change of function in the structure or poor design which does not meet the present more stringent design requirements such as in earthquake areas. The low probability of major seismic events and high cost of structural rehabilitation make it difficult to justify economically.
Conclusion
The confinement in the form of GFRP,BFRP & JFRP sheets increases the compressive strength of the specimens remarkably.
If the specimen is Fully wrapped with 5 layers of GFRP & JFRP sheets the strength increases to 60% of the strength without confinement. And BFRP &JFRP Sheets the strength increases to 65% of the strength without confinement. From the study it can be concluded that the column can be confined with GFRP,BFRP, JFRP sheets to increase their strength to a great extent.
If the experimental results show that full wrapping of the specimen increases the maximum load carrying capacity compared to the partial wrapping and without confinement column.