Abstract
Today, reinforced concrete structures are commonly used in buildings because the price cheaper than steel structures. However, many concrete structures are damaged. There are several ways to overcome this problem, and one of them is by strengthening the structure using Fiber Reinforced Polymer (FRP). This study discussed the flexural strength of reinforced concrete beams using Fiber Reinforced Polymer (FRP). In this case, the researchers used Carbon Fiber Reinforced Polymer (CFRP) Wrap Type as the external reinforcement. The beam’s dimension was 15 x 25 cm with a length of 320 cm. Based on the analysis results, the beam using CFRP Wrap type can increase the load 3.12 % times. Furthermore, the experimental results show that the beam with the CFRP type Wrap increases the load by 2.5 times. In conclusion, beams strengthened with CFRP Wrap type can inhibit initial cracks and hold the tensile and flexural strength greater than un-strengthened beams.
Highlights
Introduction resistant to corrosionAs Fiber Reinforced Polymer (FRP) is more practical, the installation process is easier
According to the graph above based on theoretical analysis, the ultimate load amount of beam without strengthening was 29,460 N, beam with steel plate was 77,050 N, beam with Carbon Fiber Reinforced Polymer (CFRP) plate was 87,310 N, beam with Glass Fiber Reinforced Polymer Wrap Type (GFRP) wrap was 84,780 N and beam with CFRP wrap was 94,700 N
After being calculated analytically the result are as follows: beam without strengthening has ultimate load in the amount of 29,460 N, beam with Steel Plate in the amount of 77,050 N, beam with CFRP Plate in the amount of 87,310 N, beam with GFRP Wrap 84,780 N and beam with CFRP Wrap in the amount of 94,700 N. From this analysis obtained on Steel Plate there is an increase in load of 2.61 times, while on CFRP Plate is 2.96 times; on GFRP Wrap is 2.67 times, and on CFRP Wrap is 3.12 times
Summary
Introduction resistant to corrosionAs FRP is more practical, the installation process is easier. Concrete is being used more frequently in expensive price, FRP provides the most economical many buildings as a construction technology than steel or solution of dealing with reinforcement because it can wood. Having several advantages, it is not surprising if dramatically reduce labor costs. The results of this rebuilding or redesigning old damaged buildings is not study will be compared with previous research conducted feasible In this kind of situation, one of the possible at USU 4,5,6 using steel plate reinforcement, CFRP type ways is that the concrete should be strengthened or plate and GFRP type wrap
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