Chen Wu, Xiaofei Xiao, Shenglan Ma, Kedan Chen, Guoliang Lin
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引用次数: 0
Abstract
AbstractThis paper proposes an ambient-cured ultra-high performance concrete (ACUHPC) by optimising its mixing procedure based on general materials. Seven reinforced concrete (RC) beams were designed and subjected to different levels of damage and strengthened using the proposed ACUHPC. Flexural experiments were performed, and corresponding finite element (FE) models were developed to investigate the flexural performance of the strengthened beams. The influence of the level of damage and thickness of the ACUHPC strengthening layer on the response of the beams was evaluated. The scope of application of the proposed ACUHPC strengthening method, suggestions for its implementation, and methods for estimating the flexural capacity and mid-span deflection of the strengthened beams are presented herein. The results indicated that using the ACUHPC can significantly increase the flexural capacity and effectively decrease the deflections and maximum crack width of the strengthened beams. Furthermore, the flexural capacity of the most severely damaged beam was enhanced by 36.3% after strengthening.Keywords: Ambient-cured ultra-high performance concretedamaged beamsdeflectionsflexural behaviourreinforced concrete beamsstrengthening Disclosure statementThe authors declare that there is no any competing interest for this study.Additional informationFundingAuthors acknowledge the financial support provided by the Industry-university Cooperation Project of Fujian Province, China (Grant No. 2022H6032); the Natural Science Foundation of Fujian Province, China (Grant No. 2020J05184); and National Natural Science Foundation of China (Grant No. 52378494).
期刊介绍:
Structure and Infrastructure Engineering - Maintenance, Management, Life-Cycle Design and Performance is an international Journal dedicated to recent advances in maintenance, management and life-cycle performance of a wide range of infrastructures, such as: buildings, bridges, dams, railways, underground constructions, offshore platforms, pipelines, naval vessels, ocean structures, nuclear power plants, airplanes and other types of structures including aerospace and automotive structures.
The Journal presents research and developments on the most advanced technologies for analyzing, predicting and optimizing infrastructure performance. The main gaps to be filled are those between researchers and practitioners in maintenance, management and life-cycle performance of infrastructure systems, and those between professionals working on different types of infrastructures. To this end, the journal will provide a forum for a broad blend of scientific, technical and practical papers. The journal is endorsed by the International Association for Life-Cycle Civil Engineering ( IALCCE) and the International Association for Bridge Maintenance and Safety ( IABMAS).