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- W2245786828 abstract "The most common and practical method for fire resistance of high-strength concrete is the use of polypropylene fibres when considering economical efficiency and workability. However, for ultra-high-strength concrete, the only use of polypropylene fibres is not enough. In order to enhance fire resistance of ultra-high-strength concrete, various types and relatively high content ratios of fibre should be necessary. Therefore, this study investigated fire resistance performance for ultra-high-strength concrete (120 200 MPa) columns incorporating various types of fibres such as polypropylene, nylon, and steel fibres. First, twenty four small size column specimens were tested with standard heating curve of ISO 834 for three hours. The main parameters were the length of polypropylene fibres and the content ratios of each fibre. In addition, the effects of aggregate types of conventional and electric arc furnace oxidizing slag aggregates were studied. The fire resistance performance of the specimens was classified with spalling grade, based on the weight loss, the spalling depth, and the spalling area. The test results showed that the hybrid fibre reinforcement of polypropylene, nylon, and steel fibres were the most effective. After the fire tests of small size columns, full size columns were constructed and tested under column loads and subjected to severe fire condition using ISO-834 fire curve. Consequently, the fire resistibility of ultra-high-strength concrete columns can be obtained by the hybrid fibre reinforcement of 0.2 % of polypropylene, 0.2 % of nylon, and 0.5 % of steel fibres." @default.
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- W2245786828 date "2010-01-01" @default.
- W2245786828 modified "2023-09-28" @default.
- W2245786828 title "Fibre Reinforcement for Enhancing Structural Fire Resistance of Ultra-high-Strength Concrete Columns" @default.
- W2245786828 hasPublicationYear "2010" @default.
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