Short Column Analysis with and Without Strengthening Reinforced Polymer Carbon Fiber and Reinforced Polymer Glass Fiber With Axial Loading

Abstract

Increasing the compressive strength of the column without changing the significant cross-sectional dimension is needed by the planner in planning the existing building or building under construction. Experiments on this thesis were conducted to see the increase of compressive strength of reinforced concrete columns before and after coated with carbon fiber wrap and glass fiber wrap, and to observe the collapse pattern that occurred on the test specimen column. The test was performed with 6 (six) test specimens of 2 (two) test specimens measuring 12 cm x 12 cm x 158 cm, concrete quality of K-225 or f’c 19 MPa. Other test objects as much as 2 (two) pieces using the dimensions of 12 cm x 12 cm x 158 cm, using the quality of concrete K-225 or f’c 19 MPa plus layer of carbon fiber type wrap 1 (one) layer with a thickness of 0.129 mm. The last 2 test pieces are 2 (two) pieces using dimensions of 12 cm x 12 cm x 158 cm, using the quality of K-225 or f’c 19 MPa concrete plus glass fiber layer thickness 2.6 mm.Test object I, a reinforced concrete column of K 225 or f’c = 19 MPa, collapsed in compressive strength of reading 140 kg / cm2 or at a load of 21.42 Ton, with a strain of 0.85 ‰. Test object II, a reinforced concrete column of K 225 or f’c = 19 MPa, collapsed in compressive strength of 120 kg / cm2 readings or at 18.36 Ton load, with a strain of 1,1 ‰. Test object III, reinforced concrete column K 225 or f’c = 19 MPa, reinforced by using Carbon Fiber Wrap 1 (one) thick layer of 0.129 mm experiencing collapse at compressive strength of reading 260 kg / cm2 or at load of 39,78 Ton, with a strain of 1.8 ‰. Test object IV, concrete reinforced concrete columns K 225 or f’c = 19 MPa, reinforced by using Carbon Fiber Wrap 1 (one) layer with 0.129 mm thick experiencing collapse at compressive strength reading 220 kg / cm2 or at load 33,66 Ton, with a strain of 2.37 ‰. Test object V, reinforced concrete columns K 225 or f’c = 19 MPa, reinforced by using Glass Fiber Wrap 2 (two) layers with 2.6 mm thick have collapsed on compressive strength of reading 320 kg / cm2 or at load 48, 96 Ton, with a strain of 2.27 ‰. Test object VI, concrete reinforced concrete columns K 225 or f’c = 19 MPa, reinforced using Glass Fiber Wrap 2 (two) layers with 2.6 mm thick have collapsed on compressive strength of reading 340 kg / cm2 or at load 52, 02 Ton, with a strain of 2.29 ‰.The columns coated with carbon and glass fiber wrap can increase the compressive strength of reinforced concrete columns. Carbon fiber wrap has a greater elasticity of fiber glass type wrap.