Beton- und Stahlbetonbau最新文献

Titelbild: Beton- und Stahlbetonbau 9/2025 混凝土和钢筋混凝土建筑9/2025

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70027

引用次数: 0

Inhalt: Beton- und Stahlbetonbau 9/2025 混凝土和钢筋混凝土工程9/2025

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70016

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Vorschau: Beton- und Stahlbetonbau 9/2025 混凝土和钢筋混凝土工程9/2025

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70025

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Jahrzehntelange Forschung - und wir reißen immer noch ab 几十年的研究，我们还在继续

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70017

Prof. Dr.-Ing. Silke Scheerer

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Beton- und Stahlbetonbau aktuell Beton- und Stahlbetonbau 9/2025 混凝土和钢结构工程9/2025

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70023

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Zeitabhängiges Verbundverhalten von Faserkunststoffbewehrung 纤维增强复合材料的时间依赖性

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70006

Dr.-Ing. Christian Caspari, Prof. Dr.-Ing. Matthias Pahn

{"title":"Zeitabhängiges Verbundverhalten von Faserkunststoffbewehrung","authors":"Dr.-Ing. Christian Caspari, Prof. Dr.-Ing. Matthias Pahn","doi":"10.1002/best.70006","DOIUrl":"https://doi.org/10.1002/best.70006","url":null,"abstract":"Long-time bond behaviour of fibre-reinforced polymerDue to their high resistance to environments that promote steel corrosion, fiber-reinforced polymers (FRP) offer significant potential for producing durable and low-maintenance concrete structures. However, FRP materials are subject to chemical and physical degradation over time, which can lead to a reduction in mechanical performance. This degradation is influenced by the properties of the fibers and polymer matrix, the fiber-matrix interface, and exposure to environmental factors. As a result, the time-dependent material behavior has a direct impact on the structural performance and deformation characteristics of FRP-reinforced concrete elements. While current research on the long-term behavior of FRP has primarily focused on its tensile properties, studies addressing the time-dependent bond behavior between FRP and concrete remain limited. This paper investigates the time-dependent bond behavior of FRP reinforcement in concrete. It begins with an analysis of the underlying damage mechanisms, followed by the presentation of a testing methodology specifically developed to capture time-related bond degradation. Experimental results are provided for sand-coated FRP bars subjected to temperature, moisture, and concrete alkalinity. The objective of the study is to derive a time-dependent bond strength suitable for structural design over a service life of up to 100 years under relevant in-service temperature conditions.","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"120 9","pages":"677-685"},"PeriodicalIF":0.8,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Veranstaltungen: Beton- und Stahlbetonbau 9/2025 混凝土和钢筋混凝土工程9/2025

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-09-29 DOI: 10.1002/best.70024

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Nachhaltigkeitssteigerung nichtmetallischer Betonbewehrungen durch 3R-Ansätze 通过3R方法提高非金属混凝土钢筋的可持续性

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-08-31 DOI: 10.1002/best.70014

Dipl.-Ing. Yue Zheng Wen, Pranav Shevkar M.Sc., Prof. Dr.-Ing. habil. Lars Hahn, Dr.-Ing. Hung Le Xuan, Dr.-Ing. Paul Penzel

{"title":"Nachhaltigkeitssteigerung nichtmetallischer Betonbewehrungen durch 3R-Ansätze","authors":"Dipl.-Ing. Yue Zheng Wen, Pranav Shevkar M.Sc., Prof. Dr.-Ing. habil. Lars Hahn, Dr.-Ing. Hung Le Xuan, Dr.-Ing. Paul Penzel","doi":"10.1002/best.70014","DOIUrl":"https://doi.org/10.1002/best.70014","url":null,"abstract":"Enhancing the sustainability of non-metallic reinforced concrete through the 3R frameworkThe construction industry is transitioning from a linear to a circular economy, focusing on waste reduction, material reuse, and recycling. Fiber-reinforced composites (FRCs) support this shift by extending reinforcement durability through corrosion-resistant fibers and reducing concrete demand. However, recycling FRCs remains challenging due to high energy consumption, harmful by-products, and degradation of mechanical properties—often leading to downcycling. Furthermore, recycling does not reduce the embodied carbon and grey energy from production, transport, and installation. For sustainable construction, non-metallic reinforcement should be preserved as long as its structural integrity remains intact—e.g., through the reuse of entire concrete slabs. This contribution highlights technologies that aim to implement the 3R principles (Reduce, Reuse, Recycle) in construction, including robotic manufacturing, recycled carbon fibers (rCF), reinforcement repair, automated deconstruction, and reuse-oriented design. Integrating these technologies into non-metallic reinforcement enhances the circularity of concrete structures and promotes material sustainability in the building sector.","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"120 9","pages":"707-716"},"PeriodicalIF":0.8,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Zugversuche an Garnen aus rezyklierten Carbonfasern 回收碳纤维纱线的拉伸试验

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-08-31 DOI: 10.1002/best.70007

Dipl.-Ing. Enrico Baumgärtel, Dr.-Ing. Silke Scheerer, Md Sazzadur Rahman, Prof. Dr.-Ing. Steffen Marx

{"title":"Zugversuche an Garnen aus rezyklierten Carbonfasern","authors":"Dipl.-Ing. Enrico Baumgärtel, Dr.-Ing. Silke Scheerer, Md Sazzadur Rahman, Prof. Dr.-Ing. Steffen Marx","doi":"10.1002/best.70007","DOIUrl":"https://doi.org/10.1002/best.70007","url":null,"abstract":"Tensile tests on yarns made from recycled carbon fibers: Semi-finished products for constructionThe demand for the recovery of carbon fibers from old components or the recycling of carbon fiber waste is increasing with the growing use of carbon fibers in many sectors (e.g., automotive, aerospace). Although components reinforced with semi-finished carbon fiber products have already been in operation for several years, the use of recycled or reused carbon fibers (rCF) in the construction sector, especially as concrete reinforcement, opens up a promising opportunity to close the carbon material cycle. In the present study, tensile tests were carried out on yarns made of rCF produced with two different impregnations (thermoplastic and thermoset) and compared with two similarly impregnated yarns made of virgin carbon fibers. The findings indicate substantial disparities in the mechanical properties, particularly in tensile strength and stiffness. These findings signify an inaugural phase in the assessment of rCF yarns for structural applications and underscore the feasibility of subsequent enhancement of rCF processes to attain performance benchmarks commensurate with those of virgin carbon fibers.","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"120 9","pages":"698-706"},"PeriodicalIF":0.8,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beton- und Stahlbetonbau aktuell Beton- und Stahlbetonbau 8/2025 混凝土和钢筋混凝土建筑8/2025

IF 0.8 4区工程技术

Beton- und Stahlbetonbau Pub Date : 2025-08-27 DOI: 10.1002/best.70002

引用次数: 0