UNIAXIAL TENSILE BEHAVIOR OF TEXTILE-REINFORCED CEMENTITIOUS COMPOSITES MADE OF CARBON AND GLASS YARNS

Date

2024-4-25

Author

Javanmard, Arsalan

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Textile-reinforced concrete (TRC) is an innovative concrete that uses glass, carbon, or basalt textiles in a cementitious matrix. Although much research has been done on the properties of TRC using glass and carbon textiles, there is still a need for a comprehensive study of how these textiles perform in different matrices, especially when short fibers are added. Therefore, the aim of this study was to investigate the properties of textile reinforced cementitious composites (TRCC) obtained when two different textiles (carbon and glass) are used in two different base matrices reinforced with steel or PVA fibers. The two different cementitious matrices, known as M7 and ECC, had different binder contents and also incorporated short steel and PVA fibers in varying amounts. Both textiles used in this study have a grid-like structure, with the glass textile (G) being non-woven and the carbon textile (C) being woven. These textiles were layered differently in the matrices to create G-TRCC and C-TRCC specimens with varying reinforcement ratios. The uniaxial tensile behavior of the TRCC specimens was determined using a clevis-grip test setup. As a result of the experimental program, it was found that the inclusion of short fibers in cementitious composites significantly reduced the workability of the mixtures. Therefore, for efficient use of short fibers, the grid size of the textiles and the length of the short fibers should be chosen to be compatible. When the mechanical properties of the TRCC were characterized in terms of the cracking and ultimate strength of the TRCC, it was found that the cracking strength of the composite appeared to be affected by the type of mortar and the ultimate strength by the type and amount of textile. The addition of the short fibers had little effect on the mechanical properties of the TRCC. The maximum stress observed on the textile in the composite was almost the same as the strength of the bare carbon textile, while there was a slight decrease for the glass textile.

Subject Keywords

Textile Reinforced Concrete, Glass Yarn, Carbon Yarn, Reinforcement Ratio, Warp Direction, Uniaxial Tensile Behavior

URI

https://hdl.handle.net/11511/109857

Collections

Graduate School of Natural and Applied Sciences, Thesis