高温下混杂纤维增强水泥复合材料的弯曲性能

I. M. Ali, A. Adheem
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引用次数: 0

摘要

“从历史上看,使用传统的测试方法并不能完全了解混杂纤维水泥复合材料的弯曲行为。本文研究了含微钢纤维(SF)和微聚丙烯纤维(PP)的高性能水泥复合材料(HPCC)高温暴露前后的试验研究结果。研究了单纤维和混杂纤维(SF)以及(SF + PP)在高温下的抗弯性能(抗弯强度、韧性和刚度)。混合料按w/c为0.28、纤维含量不同分为8组。根据这项研究的结果,在高温暴露下,建议用15%的微(PP)纤维代替高性能水泥复合材料中的微(SF),因为所有混杂纤维HPCC样品在高温暴露后,与使用1%体积分数的单钢纤维增强的样品相比,弯曲性能略有下降。”
本文章由计算机程序翻译,如有差异,请以英文原文为准。
"Flexural Performance of Hybrid Fiber Reinforced Cement Composites Under Elevated Temperatures"
"Historically, the flexural behavior of hybrid fiber cement composites is not completely understood using the traditional test methods. This research presents the results of an experimental investigations on a high performance cement composites (HPCC) containing both micro steel fibers (SF) and micro polypropylene fibers (PP) before and after elevated temperature exposure. The experimental program was developed to study the flexural performance (flexural strength, toughness and stiffness) under high temperature using mono and hybrid (SF) and (SF + PP) fibers. Mixtures were divided into eight different groups, with constant w/c of 0.28 and different fibers content. Based on the results of this research, the replacing of micro (SF) in high performance cement composites by 15 % of micro (PP) fibers is recommended at high temperature exposure due to the fact that all hybrid fiber HPCC specimens show slight decreasing in flexural behavior compared to samples reinforced with 1% volume fraction of mono steel fibers after high temperature exposure."
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