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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) >HOMOGENEITY OF STEEL FIBER REINFORCED CONCRETE (SFRC)
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HOMOGENEITY OF STEEL FIBER REINFORCED CONCRETE (SFRC)

机译：钢纤维混凝土（SFRC）的均质性

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摘要

SFRC is a structural material that can provide significant benefits, technical as well as economic, in selected structures. The condition for the utilization of SFRC is the homogeneity of the material. As a structural composite SFRC must have identical properties for all load directions. SFRC with any prevailing orientation of steel fibers cannot be considered a suitable structural material. The risk that non-homogenous SFRC appears in the SFRC structure is high, mainly for the low dosages of fibers (15 - 25 kg / m~3). At these dosages the number of fibers in the composite in comparison to the number of grains of the aggregate commonly used for production of 1 m~3 of concrete is low. Steel fibers in these low numbers cannot influence the position of all aggregate grains, and cannot bond with them and form the basic matrix of the future SFRC structure. The relation between the length of fibers and their minimum dosage for the volume unit of the SFRC supported by the results of experiments and by calculations based on the chosen calculation model are the objective of this paper.
机译：SFRC是一种结构材料，可以在选定的结构中提供重大的技术和经济利益。利用SFRC的条件是材料的均匀性。作为结构复合材料，SFRC必须在所有载荷方向上具有相同的特性。 SFRC具有普遍存在的钢纤维取向，不能认为是合适的结构材料。 SFRC结构中出现非均质SFRC的风险很高，主要是因为低剂量的纤维（15-25 kg / m〜3）。在这些剂量下，与通常用于生产1 m〜3混凝土的骨料颗粒数量相比，复合材料中的纤维数量较低。这些少量的钢纤维不会影响所有骨料的位置，也无法与其结合并形成未来SFRC结构的基本矩阵。实验结果和基于所选计算模型的计算支持的SFRC体积单位的纤维长度与其最小剂量之间的关系是本文的目标。

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