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Thorsten Eichler

Thorsten Eichler
CORR-LESS Isecke & Eichler Consulting GmbH & Co.KG

Dr.-Ing.

About

46
Publications
2,625
Reads
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140
Citations
Citations since 2017
3 Research Items
99 Citations
20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
Additional affiliations
May 2015 - May 2016
Bundesanstalt für Materialforschung und -prüfung
Position
  • Researcher
April 2012 - April 2015
Bundesanstalt für Materialforschung und -prüfung
Position
  • Researcher
July 2011 - present
CORR-LESS Isecke & Eichler Consulting GmbH & Co.KG
Position
  • Associate CEO

Publications

Publications (46)
Article
A wide range of parameters was investigated by numerical calculations concerning their impact on DC stray current corrosion of reinforced concrete (RC) structures. A simplified model geometry was used to extract the relevant parameters and their interaction in terms of stray current‐affected structures. This study mainly focuses on RC structures th...
Article
Während das Instandsetzungsprinzip W bei carbonatisierungsinduzierter Korrosion seit vielen Jahren als Standardverfahren etabliert ist, wird seine Anwendbarkeit bei chloridinduzierter Korrosion (W‐Cl) in der Fachwelt bis heute kontrovers diskutiert. Zwar ergeben sich aus seiner Anwendung gegenüber anderen Instandsetzungsverfahren auf den ersten Bli...
Chapter
Der Beitrag zum Thema kathodischer Korrosionsschutz von Stahlbetonbauwerken gibt einen guten Überblick über die Grundlagen, den Stand der Technik und der Wissenschaft sowie einige interessante Fälle aus der praktischen Umsetzung. Der kathodische Korrosionsschutz ist ein seit vielen Jahren bewährtes, wissenschaftlich sehr gut fundiertes und vor alle...
Conference Paper
Full-text available
The Laser Induced Breakdown Spectroscopy (LIBS) for the investigation of element distributions and ion transportation in building materials (especially for concrete) is established at BAM. The method is a combination of laser ablation and optical emission spectroscopy. With its translation stage (lab-system) or scanner system (mobile system) the el...
Conference Paper
Laser-induced breakdown spectroscopy (LIBS) is a combination of plasma generation on the sample surface by a high power laser pulse and optical emission spectroscopy (OES). It is a direct measurement method without an extensive sample preparation. Concrete is a multi phase system. With LIBS it is possible to distinguish the different phases and bas...
Article
Die Laser induzierte Breakdown Spektroskopie (LIBS) bietet für die Analyse heterogener, mineralischer Baustoffe, wie z. B. Beton, deutliche Vorteile gegenüber konventionellen Methoden. Sie ermöglicht neben der Quantifizierung von Elementgehalten und ‐verteilungen im Baustoff auch die Differenzierung von Elementkonzentrationen innerhalb einzelner Ph...
Chapter
Der Beitrag zum Thema kathodischer Korrosionsschutz von Stahlbetonbauwerken gibt einen guten Überblick über die Grundlagen, den Stand der Technik und der Wissenschaft sowie einige interessante Fälle aus der praktischen Umsetzung. Der kathodische Korrosionsschutz ist ein seit vielen Jahren bewährtes, wissenschaftlich sehr gut fundiertes und vor alle...
Article
Full-text available
Cracks are always present in reinforced concrete structures. In the presented research, influence of mechanical cracks on chloride ingress is studied. A compact reinforced concrete specimen was designed, mimicking the cracking behaviour of beam elements. Cracks of different widths were induced by means of mechanical loading. These cracked specimens...
Conference Paper
The laser induced breakdown spectroscopy (LIBS) is a combination of laser ablation and optical emission spectroscopy. Due to the possibility of direct measurements on the sample surface and a minimum of required sample preparation investigations of building materials can be conducted quite fast. In combination with a scanning technique (translation...
Article
Full-text available
Laser Induced Breakdown Spectroscopy (LIBS) is a combination of laser ablation, plasma formation and optical emission spectroscopy. The possibility of direct measurements on the sample surface, the minimum of necessary sample preparation and the automated setup allows for fast investigations of building materials. In combination with a scanning tec...
Conference Paper
Full-text available
Cracks are always present in reinforced concrete structures. It is a goal of the current research to study the influence of mechanical cracks on chloride ingress. A compact reinforced concrete specimen was designed, mimicking the cracking behaviour of beam elements. Cracks of different widths were induced by means of mechanical loading. These crack...
Article
At the Institute for Building Materials Research (ibac) in Aachen and the Federal Institute for Materials Research and Testing (BAM) in Berlin a joint research project is currently running with the aim to develop a numerical model which describes cathodic protection (CP) of reinforced concrete. Special project focus is the CP of the rear reinforcem...
Article
Although the complex changes at the steel–concrete interface due to cathodic polarisation are widely acknowledged to have a beneficial influence concerning the cathodic protection (CP) of steel in concrete, some questions concerning the repassivation of carbon steel in consequence of cathodic polarisation are still not satisfactorily clarified. In...
Conference Paper
The initiation of pitting corrosion on unalloyed steel in alkaline solutions depends unchallengeable on the c (Cl?)/c (OH?)-ratio. Numerous investigations on the critical chloride concentration for pit initiation can be found in literature (Bohni 1974; Breit 1998; Breit 2003; Glass and Buenfeld 1997; Sagues and Li 2001; Page 2009). Investigations o...
Article
The investigations discussed in this paper aim to clarify whether electrochemical noise measurements (ENM) are capable for application in concrete and mortar, particularly with regard to pitting initiation in such environment. For these purposes, the results of several different test series are compared and discussed. Based on investigations on pas...
Article
Parkhäuser haben nach mehreren Jahrzehnten der Nutzung häufig Sanierungsbedarf in Bezug auf die tragende Stahlbetonkonstruktion, die durch eingedrungene Chloride aus eingeschlepptem Tausalz und die hierdurch hervorgerufene Korrosion der Bewehrung in der Tragfähigkeit erheblich beeinträchtigt sein kann. Das Verfahren des kathodischen Korrosionsschut...
Article
Die Instandsetzung von Stahlbetonbauteilen bzw.-werken, welche durch chloridinduzierte Korrosion der Bewehrung gefährdet oder bereits geschädigt sind, hat in den letzten Jahrzehnten weltweit an Bedeutung gewonnen. Der kathodische Korrosionsschutz, als elektrochemisches Instandsetzungsverfahren, bildet in diesem Fall eine zuverlässige und oftmals ko...
Conference Paper
This paper discusses the capability of Electrochemical Noise Measurements (ENM) in terms of applications on steel in concrete with respect to pitting corrosion. Passive and active steel specimens in solution as well as in concrete are investigated and the results particularly with regard to the conductivity of the electrolyte and the influence of p...
Conference Paper
Pitting corrosion of carbon steel and iron in chloride containing alkaline environment is already well investigated, although a couple of questions are not clarified satisfactorily. The critical chloride content for steel in concrete and the critical chloride to hydroxide ion ratio for steel in alkaline solutions is still a major concern, consideri...
Conference Paper
Generally reinforcing steel in concrete is protected against corrosion due to the high pH-value of the pore solution within the concrete. Exceeding a critical corrosion inducing chloride concentration (Cl crit) in the concrete at the steel surface, the passive layer is destroyed and corrosion of the steel starts. This critical chloride content of b...

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