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A platform for research: civil engineering, architecture and urbanism
Property Assessment of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
Abstract The purpose of this study was to determine the effect of steel/polypropylene hybrid fibers on the mechanical properties and microstructure of ultra-high-performance concrete (UHPC). Tests were carried out on UHPC without and with fibers (steel and/or polypropylene in amounts of 0.25–1%). In this study, granite or granodiorite coarse aggregate with a grain size of about 2/8 mm was employed. The three-point bending tests displayed prolonged post-peak softening behavior. In addition, increasing the content of polypropylene fibers reduced the fracture energy. Moreover, the SEM results illustrated that adding a certain amount of fibers to concrete considerably changes the microstructure. It was observed that the smallest micro-cracks in the interfacial transition zone between the paste and aggregate occurred in the concrete containing steel fibers.
Property Assessment of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
Abstract The purpose of this study was to determine the effect of steel/polypropylene hybrid fibers on the mechanical properties and microstructure of ultra-high-performance concrete (UHPC). Tests were carried out on UHPC without and with fibers (steel and/or polypropylene in amounts of 0.25–1%). In this study, granite or granodiorite coarse aggregate with a grain size of about 2/8 mm was employed. The three-point bending tests displayed prolonged post-peak softening behavior. In addition, increasing the content of polypropylene fibers reduced the fracture energy. Moreover, the SEM results illustrated that adding a certain amount of fibers to concrete considerably changes the microstructure. It was observed that the smallest micro-cracks in the interfacial transition zone between the paste and aggregate occurred in the concrete containing steel fibers.
Property Assessment of Hybrid Fiber-Reinforced Ultra-High-Performance Concrete
Smarzewski, Piotr (author) / Barnat-Hunek, Danuta (author)
International Journal of Civil Engineering ; 16 ; 593-606
2017-02-16
14 pages
Article (Journal)
Electronic Resource
English
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