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Effect of hydraulic parameters on abrasion erosion of fiber reinforced concrete in hydraulic structures
Highlights Series of experiments are run with the water-borne sand machine to assess the abrasion damage. The results indicate that the abrasion rate is a strong function of flow velocity. An increase in impact angel and a decrease in the jet distance flow from impact place increase the abrasion depth. Fibers like polyester in concrete can block micro-cracks, thereby dramatically improving the abrasion resistance of concrete. The minimum rate of abrasion is yield in reinforced concrete with 0.6% polyester fiber.
Abstract Most hydraulic structures are known as long service life structures, and abrasion damage is one of the most significant problems in these structures. Abrasion damage is mainly caused by continuous friction and the water-borne silt, sand, and other debris impacts on concrete surfaces during the operation of the hydraulic structures. Fiber-reinforced concrete is widely used in spillways, tunnel lining, and maintenance material of hydraulic structures. The abrasion erosion tests on fiber reinforced concrete with different hydraulic parameters, including water jet velocity, distance from the impact point, and the angel of jet impact are run. The mechanism of the abrasion process is explained regarding abrasion damage. Series of experiments are run with the water-borne sand machine to assess the abrasion damage. The maximum abrasion depth, width, and the eroded mass materials constitute the parameters that are measured at the end of the tests. The results indicate that the abrasion rate is a strong function of flow velocity. An increase in impact angel and a decrease in the jet distance flow from impact place increase the abrasion depth, while there exists a critical impact flow angel and the distance from impact plate where maximum abrasion rate is measured. Fibers like polyester in concrete can block micro-cracks, thereby dramatically improving the abrasion resistance of concrete. The minimum rate of abrasion is yield in reinforced concrete with 0.6% polyester fiber.
Effect of hydraulic parameters on abrasion erosion of fiber reinforced concrete in hydraulic structures
Highlights Series of experiments are run with the water-borne sand machine to assess the abrasion damage. The results indicate that the abrasion rate is a strong function of flow velocity. An increase in impact angel and a decrease in the jet distance flow from impact place increase the abrasion depth. Fibers like polyester in concrete can block micro-cracks, thereby dramatically improving the abrasion resistance of concrete. The minimum rate of abrasion is yield in reinforced concrete with 0.6% polyester fiber.
Abstract Most hydraulic structures are known as long service life structures, and abrasion damage is one of the most significant problems in these structures. Abrasion damage is mainly caused by continuous friction and the water-borne silt, sand, and other debris impacts on concrete surfaces during the operation of the hydraulic structures. Fiber-reinforced concrete is widely used in spillways, tunnel lining, and maintenance material of hydraulic structures. The abrasion erosion tests on fiber reinforced concrete with different hydraulic parameters, including water jet velocity, distance from the impact point, and the angel of jet impact are run. The mechanism of the abrasion process is explained regarding abrasion damage. Series of experiments are run with the water-borne sand machine to assess the abrasion damage. The maximum abrasion depth, width, and the eroded mass materials constitute the parameters that are measured at the end of the tests. The results indicate that the abrasion rate is a strong function of flow velocity. An increase in impact angel and a decrease in the jet distance flow from impact place increase the abrasion depth, while there exists a critical impact flow angel and the distance from impact plate where maximum abrasion rate is measured. Fibers like polyester in concrete can block micro-cracks, thereby dramatically improving the abrasion resistance of concrete. The minimum rate of abrasion is yield in reinforced concrete with 0.6% polyester fiber.
Effect of hydraulic parameters on abrasion erosion of fiber reinforced concrete in hydraulic structures
Zarrabi, Navid (author) / Moghim, Mohammad Navid (author) / Eftekhar, Mohammad Reza (author)
2020-09-12
Article (Journal)
Electronic Resource
English
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