Fire Protection of Concrete with a Specified Design Strength Exceeding 100MPa |
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- Application of Ethylene Vinyl Alcohol Copolymer Fibers - |
Shusuke KUROIWA, Yutaka KOBAYASHI and Hiroshi JINNAI |
The only drawback of ultra-high-strength concrete is its fire performance: it is easier to show explosive spalling than conventional concrete during fire. To prevent such spalling, mixing polypropylene fibers in concrete is a practical method whose effectiveness is validated with concretes of a design strength up to 100MPa. The higher the strength of the concrete, the more fibers this method needs. The current study not only shows the effectiveness of fibers made of ethylene vinyl alcohol (EVA) copolymer in enhancing the workability of the fresh concrete, but also evaluates the fire performance of RC columns made of EVA-added concrete. |
keywords: |
High-strength concrete, Fire, Spalling, Organic fiber, Fire tests under load |