Strengthening of Reinforced Concrete Beam using Low-cost Fiber Plates.
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Abstract
In recent years, the use of Glass Fiber Reinforced Polymer (GFRP) materials for strengthening reinforced concrete structures has become increasingly popular. This is due to the lightweight nature of GFRP, making it convenient for transportation and installation, as well as its durability in various environmental conditions. Additionally, GFRP exhibits high tensile strength, making it suitable for enhancing the tensile behavior of concrete beams. However, in current practice, the installation of GFRP for strengthening often involves layer-by-layer application, which can be challenging, especially when a large number of layers are required. Therefore, the main objective of this research is to utilize readily available GFRP materials and fabricate them into preformed sheets according to the designed number of layers. These sheets are then used to strengthen concrete beams, and the performance of the strengthening is evaluated. Three specimens of size 15x20 centimeters, with a length of 2 meters, are tested, divided into control beams and beams strengthened with GFRP sheets of 1 and 3 layers, respectively. The test results demonstrate the increased load-carrying capacity, consistent with theoretical models, as well as the behavior of each strengthening configuration. The study concludes that strengthening structures with GFRP sheets can enhance the load-carrying capacity of concrete beams and proposes suitable layer configurations for strengthening, including considerations for the mode of failure. Further studies are recommended for future investigation.
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สงวนสิทธิ์ โดย สถาบันการอาชีวศึกษาภาคตะวันออกเฉียงเหนือ 1
306 หมู่ 5 ถนนมิตรภาพ หนองคาย-อุดรธานี ตำบลโพธิ์ชัย อำเภอเมืองหนองคาย จังหวัดหนองคาย 43000
โทร 0-4241-1445,0-4241-1447
ISSN : 3027-6861 (print) ISSN : 3027-687X (online)
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