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首页> 外文会议>RILEM Proceedings PRO 39; RILEM Symposium on Fibre-Reinforced Concretes(FRC) - BEFIB 2004 vol.1; 20040920-22; Varenna(IT) >DURABILITY ASPECTS OF STEEL FIBRE REINFORCED CONCRETE
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DURABILITY ASPECTS OF STEEL FIBRE REINFORCED CONCRETE

机译：钢纤维混凝土的耐久性方面

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摘要

After about forty years of research, utilisation of Steel Fibre Reinforced Concrete (SFRC) is progressively growing also in the field of structural elements. In particular recent studies have shown that it is possible to efficiently substitute conventional reinforcement (reinforcing bars or welded mesh) in slabs on grade and the shear reinforcement in prefabricated roof elements by using steel fibres. Since durability is a major topic in concrete structures nowadays, there is now an increasing need of a better understanding of SFRC behaviour in response to environmental actions. In the present work, durability of SFRC is investigated with particular attention to freeze-thaw resistance with and without de-icing salts, carbonation resistance, chloride and oxygen permeability. Results show that the addition of steel fibres does not influence properties of SFRC related to durability but enhance its toughness and post-cracking behaviour.
机译：经过大约四十年的研究，钢纤维增强混凝土（SFRC）的利用在结构元件领域也正在逐步增长。特别是最近的研究表明，可以使用钢纤维有效地替代楼板上平板上的传统钢筋（钢筋或焊接网）和预制屋顶构件中的剪切钢筋。由于耐用性是当今混凝土结构中的一个主要主题，所以现在越来越需要更好地了解SFRC响应环境行为的行为。在目前的工作中，研究了SFRC的耐久性，并特别关注了有无除冰盐，抗碳化性，耐氯化物和透氧性的抗冻融性。结果表明，添加钢纤维不会影响SFRC与耐久性有关的性能，但会提高其韧性和开裂后的行为。

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