Recent advances in structural fibre-reinforced concrete focused on polyolefin-based macro-synthetic fibres

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-02-18 DOI:10.3989/mc.2020.12418

M. G. Alberti, A. Enfedaque, J. Gálvez, Á. Picazo

引用次数: 14

Abstract

Fibre-reinforced concrete (FRC) allows reduction in, or substitution of, steel-bars to reinforce concrete and led to the commonly named structural FRC, with steel fibres being the most widespread. Macro-polymer fibres are an alternative to steel fibres, being the main benefits: chemical stability and lower weight for analogous residual strengths of polyolefin-fibre-reinforced concrete (PFRC). Furthermore, polyolefin fibres offer additional advantages such as safe-handling, low pump-wear, light weight in transport and storage, and an absence of corrosion. Other studies have also revealed environmental benefits. After 30 years of research and practice, there remains a need to review the opportunities that such a type of fibre may provide for structural FRC. This study seeks to show the advances and future challenges of use of these polyolefin fibres and summarise the main properties obtained in both fresh and hardened states of PFRC, focussing on the residual strengths obtained from flexural tensile tests.

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近年来结构纤维增强混凝土的研究进展主要集中在聚烯烃基宏观合成纤维上

纤维增强混凝土（FRC）允许减少钢筋或用钢筋代替钢筋来加固混凝土，并导致了通常命名的结构FRC，其中钢纤维是最广泛的。大分子聚合物纤维是钢纤维的替代品，其主要优点是：聚烯烃纤维增强混凝土（PFRC）的化学稳定性和较低的重量，具有类似的残余强度。此外，聚烯烃纤维还具有其他优点，如安全操作、低泵磨损、运输和储存重量轻以及无腐蚀。其他研究也揭示了环境效益。经过30年的研究和实践，仍然需要审查这种类型的纤维可能为结构FRC提供的机会。本研究旨在展示这些聚烯烃纤维的使用进展和未来的挑战，并总结PFRC在新鲜和硬化状态下获得的主要性能，重点是从弯曲拉伸试验中获得的残余强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.