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A platform for research: civil engineering, architecture and urbanism
Stress-strain relationship of fiber reinforced recycled aggregate concrete under uniaxial tension
https://orcid.org/0000-0002-6146-9561
Abstract To solve the problem of the lack of structural design basis of fiber reinforced recycled aggregate concrete (FRAC), and promote its realistic application, in this investigation, the replacement ratio of recycled coarse aggregate (RCA), fiber type, fiber content, and fiber blending forms are taken as experimental variables. With the size of Φ100 mm×300 mm, 21 groups of cylindrical specimens are designed to study the influence of the above variables on the complete stress-strain curve of fiber RAC when bearing uniaxial tension. The results show that the tensile characteristic values decrease as the replacement ratio of RCA increases. When single doping of fibers was considered, the tensile characteristic values increased as fiber content increased. When the steel (SF) was mixed with polyvinyl alcohol fiber (PVAF) and polypropylene fiber (PPF), the tensile characteristic values were improved. Proper blending of PVAF and PPF can improve the characteristic values of tensile ductility. Through the results of the uniaxial tensile experiment, constitutive equations of the uniaxial tensile stress-strain curve of FRAC under different test variables were established, which can provide fundamental material parameters to design FRAC structures.
Highlights Direct uniaxial tensile test is adopted to study the stress-strain behavior of FRAC. Factors influencing the performance of FRAC are investigated and summarized. Constitutive equations of the uniaxial tensile stress-strain curve of FRAC are proposed.
Stress-strain relationship of fiber reinforced recycled aggregate concrete under uniaxial tension
https://orcid.org/0000-0002-6146-9561
Abstract To solve the problem of the lack of structural design basis of fiber reinforced recycled aggregate concrete (FRAC), and promote its realistic application, in this investigation, the replacement ratio of recycled coarse aggregate (RCA), fiber type, fiber content, and fiber blending forms are taken as experimental variables. With the size of Φ100 mm×300 mm, 21 groups of cylindrical specimens are designed to study the influence of the above variables on the complete stress-strain curve of fiber RAC when bearing uniaxial tension. The results show that the tensile characteristic values decrease as the replacement ratio of RCA increases. When single doping of fibers was considered, the tensile characteristic values increased as fiber content increased. When the steel (SF) was mixed with polyvinyl alcohol fiber (PVAF) and polypropylene fiber (PPF), the tensile characteristic values were improved. Proper blending of PVAF and PPF can improve the characteristic values of tensile ductility. Through the results of the uniaxial tensile experiment, constitutive equations of the uniaxial tensile stress-strain curve of FRAC under different test variables were established, which can provide fundamental material parameters to design FRAC structures.
Highlights Direct uniaxial tensile test is adopted to study the stress-strain behavior of FRAC. Factors influencing the performance of FRAC are investigated and summarized. Constitutive equations of the uniaxial tensile stress-strain curve of FRAC are proposed.
Stress-strain relationship of fiber reinforced recycled aggregate concrete under uniaxial tension
https://orcid.org/0000-0002-6146-9561
Abstract To solve the problem of the lack of structural design basis of fiber reinforced recycled aggregate concrete (FRAC), and promote its realistic application, in this investigation, the replacement ratio of recycled coarse aggregate (RCA), fiber type, fiber content, and fiber blending forms are taken as experimental variables. With the size of Φ100 mm×300 mm, 21 groups of cylindrical specimens are designed to study the influence of the above variables on the complete stress-strain curve of fiber RAC when bearing uniaxial tension. The results show that the tensile characteristic values decrease as the replacement ratio of RCA increases. When single doping of fibers was considered, the tensile characteristic values increased as fiber content increased. When the steel (SF) was mixed with polyvinyl alcohol fiber (PVAF) and polypropylene fiber (PPF), the tensile characteristic values were improved. Proper blending of PVAF and PPF can improve the characteristic values of tensile ductility. Through the results of the uniaxial tensile experiment, constitutive equations of the uniaxial tensile stress-strain curve of FRAC under different test variables were established, which can provide fundamental material parameters to design FRAC structures.
Highlights Direct uniaxial tensile test is adopted to study the stress-strain behavior of FRAC. Factors influencing the performance of FRAC are investigated and summarized. Constitutive equations of the uniaxial tensile stress-strain curve of FRAC are proposed.
Stress-strain relationship of fiber reinforced recycled aggregate concrete under uniaxial tension
Luo, Surong (author) / Zhou, Wentao (author) / Yu, Minming (author) / Zhang, Kaijian (author) / Zhang, Qingtian (author)
2024-03-02
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2018
Compressive stress–strain behavior of steel fiber reinforced-recycled aggregate concrete
| Online Contents | 2014