Effect of Repairing with Retrofit Method (Concrete Jacketing) Using Bamboo Reinforcement on Flexural Capacity of Reinforced Concrete Beam with Initial Damage Variation

The flexural capacity of the reinforced concrete beam was given initial damage variation and do the retrofit with repair mortar and four bamboo reinforcement with 60 cm of length. The study was conducted at the Laboratory of Structure and Construction Materials, Brawijaya University, Malang, Indonesia. Existing reinforced concrete beams with dimensions of 15 x 20 x 100 cm using 2D13 for compressive and tensile bars and stirrup bars Ø10-100. In the retrofit process, the height of reinforced concrete beams increased to 23 cm and use four bamboo reinforcements with dimensions 10 mm x 10 mm. Reinforced concrete beams were tested for flexural in initial and after loading retrofitting with three-point loaded. From the research conducted, it can be found that the beam with low initial damage has a large flexural capacity comparing to the beam with high initial damage