The application of duroplastic gap filling material DIAMANT MM1018 in preloaded bolted connections

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-02-01 DOI:10.1002/stco.202370105

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引用次数: 0

Abstract

In steel construction, bolted connections are preloaded either for load-bearing capacity reasons or for serviceability reasons. Single and multi-section connections of wind turbines, offshore plants, bridges etc. are typical application examples. Gap formation, caused by imperfections due to fabrication and assembly, poses a risk e. g. for the controlled application of the required preload level as well as for the prevention of cavity corrosion. This can significantly impair the load-bearing capacity and the durability of the connection and even lead to a premature failure. Therefore, the formation of gaps must be kept to a minimum, whereby DIN EN 1090-2 provides possible measures such as the use of packing plates for this purpose. Two-component reaction resin systems based on epoxy resins, which are filled with special metallic materials to improve the mechanical properties, are a possible alternative for gap filling. Systematic investigations were carried out into the use of the gap-filling material MM1018 for use in preloaded bolted connections. In this contribution, experimentally determined slip factors as well as the expected preload losses over the service life are presented and discussed. Stranghöner, N.; Makevicius, L.; Korbaj, A.; Kunde, C. (2023) Einsatz vom duroplastischen Spaltausgleichsmaterial DIAMANT MM1018 in vorgespannten geschraubten Verbindungen. Stahlbau 92, No. 1, pp. 27–38. https://doi.org/10.1002/stab.202200069 The application of duroplastic gap filling material DIAMANT MM1018 in preloaded bolted connections E D I T O R ’ S R E C O M M E N D A T I O N

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硬质塑料填充材料DIAMANT MM1018在预紧螺栓连接中的应用

在钢结构中，螺栓连接是出于承载能力或可用性的原因而预加载的。风力涡轮机、海上工厂、桥梁等的单节和多节连接是典型的应用示例。由制造和组装引起的缺陷引起的间隙形成会带来风险，例如，对所需预加载水平的控制应用以及对空腔腐蚀的预防。这会显著损害连接的承载能力和耐久性，甚至导致过早失效。因此，间隙的形成必须保持在最低限度，因此DIN EN 1090-2提供了可能的措施，例如为此目的使用填料板。基于环氧树脂的双组分反应树脂体系，填充特殊金属材料以提高机械性能，是间隙填充的可能替代方案。对用于预加载螺栓连接的间隙填充材料MM1018的使用进行了系统的研究。在这篇文章中，提出并讨论了实验确定的滑移系数以及使用寿命内的预期预载损失。Stranghöner，N。；Makevicius，L。；Korbaj，A。；Kunde，C.（2023）在Verbindungen的Vogespannten geschraubten Verbindunge的DIAMANT MM1018材料中。Stahlbau 92，第1期，第27-38页。https://doi.org/10.1002/stab.202200069硬塑性间隙填充材料DIAMANT MM1018在预紧螺栓连接中的应用

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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.