Dunkelfärbung der Betonfahrbahndecke im AKR‐Kontext

Weise, Frank; Kind, Thomas; Stelzner, Ludwig; Wieland, Marko

doi:10.1002/best.201800020

Cited by 10 publications

(9 citation statements)

References 3 publications

(2 reference statements)

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“…The more detailed NMR moisture measurements in the concrete boundary zone show a good level of correlation between higher NMR amplitude, indicating greater moisture content and the darkened surface of the concrete pavement near the joints. Further detailed information on analyzing the causes of the initial ASR damage leading to darkening can be found in the study by Weise et al [ 115 ]…”

Section: Discussionmentioning

confidence: 99%

“…According to a nationwide analysis of the German highway network carried out by the Federal Highway Research Institute (BASt) in 2012, ≈1500 km carriageway were suspected of ASR. [ 115 ] In practice, this type of damage can reduce the service life of the concrete pavement from 30 to 10 years in some cases.…”

Section: Concrete Road Pavements—multimethods Investigations and A No...mentioning

confidence: 99%

“…Adapted with permission. [ 115 ] Copyright 2018, Ernst & Sohn.a) D‐scan with extension of time of flight in the area of the transversal joint. b) Top view of the exclaimed federal highway section with radar measurement field.…”

Section: Concrete Road Pavements—multimethods Investigations and A No...mentioning

confidence: 99%

mentioning

confidence: 99%

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A Multiscale and Multimethod Approach to Assess and Mitigate Concrete Damage Due to Alkali–Silica Reaction

et al. 2022

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Alkali–silica reaction (ASR) is a chemical reaction within concrete which can lead over time to cracking and spalling. Due to the complexity of the problem, it still causes damage to concrete constructions worldwide. The study aims to illustrate the interdisciplinary research of the German Federal Institute for Materials Research and Testing (BAM) within the last 20 years, considering all aspects of ASR topics from the macro‐ to the micro‐level. First, methods for characterization and assessment of ASR risks and reaction products used at BAM are explained and classified in the international context. Subsequently, the added value of the research approach by combining different, preferably nondestructive, methods across all scales is explained using specific examples from a variety of research projects. Aspects covered range from the development of new test setups to assess aggregate reactivity, to analysis of microstructure and reaction products using microscopical, spectroscopical, and X‐ray methods, to the development of a testing methodology for existing concrete pavements including in‐depth analysis of the visual damage indicator and the deicing salt input using innovative testing techniques. Finally, research regarding a novel avoidance strategy that makes use of internal hydrophobization of the concrete mix is presented.

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Section: Discussionmentioning

confidence: 99%

Section: Concrete Road Pavements—multimethods Investigations and A No...mentioning

confidence: 99%

Section: Concrete Road Pavements—multimethods Investigations and A No...mentioning

confidence: 99%

mentioning

confidence: 99%

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A Multiscale and Multimethod Approach to Assess and Mitigate Concrete Damage Due to Alkali–Silica Reaction

et al. 2022

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“…In contrast to NMR spectroscopy, the NMR relaxometry method is even applicable on site by using mobile sensors. It therefore allows, for example, the contactless measurement of moisture ingress in buildings and artifacts of cultural heritage [99] or moisture-induced degradation processes such as alkali-silica reactions in infrastructures [100].…”

Section: Principles Of 1 H Nuclear Magnetic Resonance Relaxometrymentioning

confidence: 99%

An Ontology-Based Approach to Enable Data-Driven Research in the Field of NDT in Civil Engineering

et al. 2021

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Although measurement data from the civil engineering sector are an important basis for scientific analyses in the field of non-destructive testing (NDT), there is still no uniform representation of these data. An analysis of data sets across different test objects or test types is therefore associated with a high manual effort. Ontologies and the semantic web are technologies already used in numerous intelligent systems such as material cyberinfrastructures or research databases. This contribution demonstrates the application of these technologies to the case of the 1H nuclear magnetic resonance relaxometry, which is commonly used to characterize water content and porosity distribution in solids. The methodology implemented for this purpose was developed specifically to be applied to materials science (MS) tests. The aim of this paper is to analyze such a methodology from the perspective of data interoperability using ontologies. Three benefits are expected from this approach to the study of the implementation of interoperability in the NDT domain: First, expanding knowledge of how the intrinsic characteristics of the NDT domain determine the application of semantic technologies. Second, to determine which aspects of such an implementation can be improved and in what ways. Finally, the baselines of future research in the field of data integration for NDT are drawn.

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Dehn¹,

Wiens²

2022

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Dunkelfärbung der Betonfahrbahndecke im AKR‐Kontext

Cited by 10 publications

References 3 publications

A Multiscale and Multimethod Approach to Assess and Mitigate Concrete Damage Due to Alkali–Silica Reaction

A Multiscale and Multimethod Approach to Assess and Mitigate Concrete Damage Due to Alkali–Silica Reaction

An Ontology-Based Approach to Enable Data-Driven Research in the Field of NDT in Civil Engineering

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