High-temperature resistance of cement composites with randomly distributed aluminium silicate fibbers

IF 10.8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement & concrete composites Pub Date : 2023-10-19 DOI:10.1016/j.cemconcomp.2023.105339

Dana Koňáková, Vojtěch Pommer, Kateřina Šádková, Robert Černý, Eva Vejmelková

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Abstract

Aluminium silicate fibres are known for their low thermal conductivity and specific heat capacity, high thermal shock resistance, low weight and excellent corrosion resistance. However, their use in cement-based composites for high-temperature applications has been very limited. In this paper, the effect of randomly dispersed alumina-silicate fibres on the high-temperature resistance of cement composites is analysed as a function of the mix composition. The measurement of the basic physical, mechanical, hygric and thermal properties shows the most favourable results for the composites containing calcium aluminate cement and basalt aggregates, the fibre dosage of 1 % being an optimal solution. A comparison with the results reported by other researchers shows that in the temperature range up to 1000 °C, aluminium silicate fibres perform better than steel, glass and carbon fibres for both Portland cement and calcium aluminate cement matrices, and their effect is similar to that of basalt fibres.

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随机分布硅酸铝纤维水泥复合材料的耐高温性能

硅酸铝纤维以其低导热性和比热容、高抗热震性、低重量和优异的耐腐蚀性而闻名。然而，它们在高温应用的水泥基复合材料中的应用非常有限。本文分析了随机分散的硅酸铝纤维对水泥复合材料耐高温性能的影响，并将其作为混合料组成的函数。对基本物理、机械、混杂和热性能的测量显示，含有铝酸钙水泥和玄武岩骨料的复合材料的结果最为有利，1%的纤维用量是最佳解决方案。与其他研究人员报告的结果进行比较表明，在高达1000°C的温度范围内，硅酸铝纤维在硅酸盐水泥和铝酸钙水泥基体中的性能均优于钢、玻璃和碳纤维，其效果与玄武岩纤维相似。

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来源期刊

Cement & concrete composites 工程技术-材料科学：复合

CiteScore

18.70

自引率

11.40%

发文量

459

审稿时长

65 days

期刊介绍： Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.