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首页> 外文期刊>Cement & concrete composites >Characterization of self-compacting concretes prepared with different fibers and mineral additions
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Characterization of self-compacting concretes prepared with different fibers and mineral additions

机译：用不同纤维和矿物添加剂制备的自密实混凝土的特性

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摘要

In this work, several self-compacting concretes were prepared by using three different types of fibers made of steel, poly-vinyl-alcohol (PVA) and high toughness poly-propylene (PPHT) and two different types of mineral addition (limestone powder and powder from recycled concrete). The water to cement ratio was held constant at 0.40. Fresh concrete behavior was evaluated by means of slump flow, V-funnel and L-box tests while the hardened concrete behavior was evaluated by means of flexure and compression tests, as well as free drying and restrained plastic shrinkage tests. Excellent performances were generally obtained, particularly for the self-compacting concretes prepared with steel fibers and powder from recycled concrete.
机译：在这项工作中，使用三种不同类型的钢，聚乙烯醇（PVA）和高韧性聚丙烯（PPHT）制成的纤维以及两种不同类型的矿物添加物（石灰石粉和石灰石）制备了几种自密实混凝土。再生混凝土中的粉末）。水灰比保持恒定在0.40。通过坍落度流，V形漏斗和L型箱试验评估了新鲜混凝土的性能，同时通过弯曲和压缩试验以及自由干燥和抑制塑性收缩的方法评估了硬化混凝土的性能。通常获得优异的性能，特别是对于由钢纤维和再生混凝土制成的粉末制成的自密实混凝土。

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