Repair of concrete beams – a case study |
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| Affiliation: | 1. Civil and Arch. Engineering Department, College of Engineering, Palestine Polytechnic University, Hebron, Palestine;2. Department of Civil Engineering, College of Engineering, Fahad Bin Sultan University, Tabuk, Saudi Arabia;1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;2. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100086, China;1. Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan;2. Department of Bridge and Tunnel, Faculty of Civil Engineering, University of Transport Technology, 54 Trieu Khuc, Thanh Xuan, Hanoi 100000, Vietnam;3. Concrete Materials Laboratory, Railway Technical Research Institute, 2-8-38 Hikari-cho, Kokubunji-shi, Tokyo 185-8540, Japan |
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| Abstract: | This paper reports results of a study conducted to investigate the causes of cracks noted on concrete beams in a student facility on a university campus. Cracks were noted on the beams within 6 months of construction. They increased in size within a month. Field and laboratory investigations were conducted to assess the causes of cracking of the beams. The compressive strength of the concrete cores taken from the beams was found to be less than the specified strength. The cracks were repaired by epoxy injection and the structural integrity of the repaired beams was assessed by conducting load tests. The deflection of the repaired beams, under the imposed test loads, was less than that specified by ACI 318 indicating the efficiency of the repair procedure utilized. |
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