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This course discusses about engineering cementitious composites (ECC) and explores their application in structural engineering. Participants will delve into various topics related to ECC, including shear reinforcing, durability performance, waterproofing, mechanical properties, and sustainability. Throughout the course students will gain a comprehensive understanding of ECC materials, their behavior, and their potential for enhancing the performance and durability of concrete structures. The course will also cover finite element analysis techniques for analyzing the behavior of ECC elements and evaluating their structural response.
1. Attendees will understand the durability performance of engineering fiber cementitious composites (ECC).
2. Attendees will understand the influence of waterproofing treatments on the durability, crack resistance, and waterproofing performance of ECC elements.
3. Attendees will learn about the toughness and crack resistance of engineered cementitious composites (ECC) incorporating desert sand as a fine aggregate.
General Course Information
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Abstract: This study investigates the shear behavior of reinforced concrete (RC) beams that have been strengthened using carbon fiber reinforced polymer (CFRP) grids with engineered cementitious composite (ECC) through finite element (FE) analysis. The analysis includes twelve simply supported and continuous beams strengthened with different parameters such as CFRP sheets, CFRP grid cross-sectional area, and CFRP grid size. To conduct the analysis, FE models of the RC beams were created and analyzed using ABAQUS software. Research results show that the strengthened RC beams with CFRP grids and ECC had approx. 30–50% higher shear capacity than reference RC beams. The composite action of CFRP grids with the ECCs also showed a significant ability to limit diagonal cracks and prevent the degradation of the bending stiffness of the RC beams. Furthermore, this study calculated the shear capacity of the strengthened beams using an analytical model and compared it with the numerical analysis results. The analytical equations showed only a 4% difference from the numerical results, indicating that the analytical model can be used in practice.