Beton- und Stahlbetonbau最新文献

{"title":"Aktuelle Anwendungsbeispiele der laserinduzierten Plasmaspektroskopie in der Bauwerksdiagnostik","authors":"Dr. rer. nat. Tobias Völker,&nbsp;Jil Blaschke B.Sc.,&nbsp;Dr. sc. ETH Matthias Lierenfeld,&nbsp;Dipl.-Phys. Gerd Wilsch,&nbsp;Dipl.-Ing. Dirk Dalichow,&nbsp;Dipl.-Ing. ETH Philipp Truffer,&nbsp;apl. Prof. Dr. rer. nat. Sabine Kruschwitz","doi":"10.1002/best.70078","DOIUrl":"https://doi.org/10.1002/best.70078","url":null,"abstract":"<p><b>Current applications of laser-induced breakdown spectroscopy in building material diagnostics</b></p><p>The assessment and maintenance of concrete structures require reliable and efficient analytical methods to detect complex damage mechanisms at an early stage and to enable well-founded evaluations. Conventional chemical–analytical methods used in concrete analysis provide precise results with respect to the sample mass, however, they are associated with considerable laboratory effort, offer only limited spatial resolution due to the sampling process, and are subject to uncertainties in the interpretation of results. Laser-induced breakdown spectroscopy (LIBS) offers significant potential as a rapid, imaging, and largely non-destructive alternative. In recent years, the technique has become increasingly established in structural diagnostics and is now applied across a broad range of use cases. This contribution provides an overview of the current state of LIBS applications and based on selected practical examples, highlights the capabilities, added value, limitations, and future development prospects of the technique.</p>","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 4","pages":"344-356"},"PeriodicalIF":0.8,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686298","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}

{"title":"Titelbild: Beton- und Stahlbetonbau 4/2026","authors":"","doi":"10.1002/best.70109","DOIUrl":"https://doi.org/10.1002/best.70109","url":null,"abstract":"","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 4","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/best.70109","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vorschau: Beton- und Stahlbetonbau 3/2026","authors":"","doi":"10.1002/best.70096","DOIUrl":"https://doi.org/10.1002/best.70096","url":null,"abstract":"","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/best.70096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Titelbild: Beton- und Stahlbetonbau 3/2026","authors":"","doi":"10.1002/best.70093","DOIUrl":"https://doi.org/10.1002/best.70093","url":null,"abstract":"","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/best.70093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Warum wir nicht ressourceneffizienter und kreislauffähiger mit Beton bauen und was dafür notwendig wäre","authors":"Benjamin Kromoser","doi":"10.1002/best.70091","DOIUrl":"https://doi.org/10.1002/best.70091","url":null,"abstract":"&lt;p&gt;Die Errichtung und der Betrieb von Gebäuden und Bauwerken verbraucht, bedingt durch die vergleichsweise große Masse bzw. das große zu konditionierende Volumen, einen wesentlichen Teil der weltweit genutzten Primärrohstoffe und Energie. Das ist eigentlich in der Branche und teilweise auch in der Gesellschaft schon gut bekannt sowie auch, dass damit ein erhebliches, bis dato noch weitgehend ungenutztes Potenzial zur Senkung der anthropogenen Umweltauswirkungen verbunden ist. Trotz einer unzählbaren Anzahl an offenen Forschungsfragen, die damit verbunden sind, die jetzt und in Zukunft möglichst umfassend bearbeitet werden sollten, ist doch auch festzuhalten, dass wir jetzt schon über eine breite Wissensbasis und Technologien verfügen, die Abhilfe schaffen könnten.&lt;/p&gt;&lt;p&gt;Nun stellt sich die Frage: Warum passiert das nicht in der Breite, wo wir doch wissen, welche Auswirkungen mit einem Nicht-Handeln verbunden sind? Fokussiert man auf die Herstellung der Gebäude: Warum setzen wir die Materialien, damit auch Beton, nicht effizienter ein, sodass unter Einhaltung der notwendigen Sicherheitsniveaus schlichtweg nur das Material verbaut wird, das für den jeweiligen Zweck auch wirklich benötigt wird? Warum ziehen wir teils eine Neuerrichtung vor, obwohl der Bestand im Sinne einer Kreislaufwirtschaft in Form von Bauwerken, Bauteilen und Baustoffen teils höherwertig und damit mit einem geringeren Einfluss auf Umwelt genutzt werden könnte?&lt;/p&gt;&lt;p&gt;Die Antwort ist relativ einfach: Die Industrialisierung hat dazu geführt, dass in den entwickelten Staaten die Kosten für Baumaterial im letzten Jahrhundert, insbesondere Beton, verglichen mit den Kosten für Personal deutlich gesunken sind. Das Bauen ist wie auch die Natur sehr individuell und viele Bauwerke sind Unikate. Trotz immer wieder aufflammender Ansätze, das Bauen zu systematisieren, wird die Individualität auch in der Zukunft erhalten bleiben – eben weil es in der Natur der Sache liegt. Das bedeutet, dass verglichen mit Massenprodukten viel Aufwand für die Planung und Umsetzung betrieben werden muss. Die Konsequenz ist, dass die Wertigkeit des Materials und somit auch der Antrieb, es möglichst effizient einzusetzen, aktuell in unserer kapitalistischen Gesellschaft gering ist.&lt;/p&gt;&lt;p&gt;Um das zu ändern, müssen wir uns aktiv damit beschäftigen, dem hochwertigen Material Beton mehr Wertschätzung entgegenzubringen und es effizienter einzusetzen, die Material- und Personalkosten wieder in ein besseres Verhältnis zu bringen, Prozesse wo möglich zu automatisieren, um materialoptimierte Strukturen effizienter planen und herstellen zu können, und sich real damit zu beschäftigen, wie eine möglichst hochwertige Kreislaufwirtschaft in der Breite etabliert werden kann, z.B. wie wir den Bestand möglichst lange nutzen können bzw. wie wir heute Planen, um eine möglichst lange Nutzung zu ermöglichen. Mein Apell lautet nun, dass alle entlang der Wertschöpfungskette sich aktiv daran beteiligen, die vielen dem zuträglichen Ideen ","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/best.70091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inhalt: Beton- und Stahlbetonbau 3/2026","authors":"","doi":"10.1002/best.70095","DOIUrl":"https://doi.org/10.1002/best.70095","url":null,"abstract":"","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/best.70095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Untersuchung von hochtemperaturinduzierten Betonabplatzungen","authors":"Olga Benedix M.Sc.,&nbsp;Prof. Dr.-Ing. Dr.-Ing. E. h. Manfred Curbach,&nbsp;Prof. Dr.-Ing. Birgit Beckmann,&nbsp;Prof. Dr.-Ing. Steffen Marx","doi":"10.1002/best.70068","DOIUrl":"https://doi.org/10.1002/best.70068","url":null,"abstract":"<p><b>Investigations of high-temperature-induced concrete spalling</b></p><p>The spalling phenomenon particularly affects concretes with a dense structure, such as those used for carbon-reinforced concrete. For the widespread practical application of carbon-reinforced concrete, achieving a high fire resistance class is essential. In addition to the importance of the material properties of the components concrete and reinforcement, the test methods used to determine these properties are also of particular importance. Fire tests using the standard temperature-time curve are complex and therefore unsuitable for the initial characterization of new materials or minor modifications. Here, we present a simplified, space-saving test setup to examine high-temperature-induced concrete spalling, based on the PTM (pressure temperature mass) test. The functionality of the test setup was tested using a High-Performance Concrete (HPC) specially developed for the production of carbon-reinforced concrete structures. By adding short polypropylene fibers, concrete spalling was completely prevented, and the processability required for the production of carbon reinforced concrete using the casting or lamination process was maintained through minor modifications of the concrete composition.</p>","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":"222-231"},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564942","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}

{"title":"Bewertung der Einflüsse verschiedener Oberflächen auf das Verbundverhalten von additiv gefertigter Bewehrung","authors":"Dipl.-Ing. Luca Locher,&nbsp;Prof. Dr.-Ing. Thomas Braml,&nbsp;Dr.-Ing. Stefan Küttenbaum,&nbsp;Björn Kleemann M.Sc.","doi":"10.1002/best.70054","DOIUrl":"https://doi.org/10.1002/best.70054","url":null,"abstract":"<p><b>Evaluation of the influence of different surface geometries on the bond behaviour of additively manufactured reinforcement – Geometrical surface analysis using 3D-scans</b></p><p>For several years, efforts have been made to optimize reinforcement layouts in reinforced concrete members along the principal stress trajectories to reduce the required amount of reinforcement. With the promising Wire Arc Additive Manufacturing (WAAM) process, principal stress trajectories and thus the force flow within the structural member can be directly represented by additively manufactured reinforcement bars. To facilitate the integration of WAAM reinforcement bars in structural design with the aim of reducing reinforcement demand, it is first necessary to investigate the process stability, the mechanical properties, and the bond behavior. Following a discussion of the fundamentals of bond mechanisms and their key influencing parameters, the process stability is assessed by means of 3D scans, and the mechanical properties are subjected to statistical evaluation. Subsequently, the bond behavior is analysed as a function of one of the decisive parameters, the relative rib area <span></span><math></math>. The results presented demonstrate the potential of additively manufactured reinforcement. Building upon this, further experimental series are required to validate the described parameters as well as additional influencing factors. The objective of these studies is to gradually incorporate the technology into normative design concepts and thereby establish the basis for its application in structural engineering practice.</p>","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":"232-240"},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566528","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}

{"title":"Beton- und Stahlbetonbau aktuell 3/2026","authors":"","doi":"10.1002/best.70097","DOIUrl":"https://doi.org/10.1002/best.70097","url":null,"abstract":"","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":"269-273"},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565761","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}

{"title":"Veranstaltungen: Beton- und Stahlbetonbau 3/2026","authors":"","doi":"10.1002/best.70094","DOIUrl":"https://doi.org/10.1002/best.70094","url":null,"abstract":"","PeriodicalId":55386,"journal":{"name":"Beton- und Stahlbetonbau","volume":"121 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565763","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}