Wireless Concrete Strength Monitoring of Wind Turbine Foundations

Perry, Marcus; Fusiek, Grzegorz; Niewczas, Paweł; Rubert, Tim

doi:10.3390/s17122928

Cited by 14 publications

(4 citation statements)

References 34 publications

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“…The evolution of the compressive strength of the geoploymer is shown in Figure 7, with a non-linear fit obtained as outlined in [97]. The mean value of compressive strength for 28 days met standard BS EN 1504-3:2005 for a non-structural class R1 repair; however, there was a growing degree of strength variability in samples as they cured.…”

Section: Resultsmentioning

confidence: 88%

Ambient Cured Fly Ash Geopolymer Coatings for Concrete

et al. 2019

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The reinforced concrete structures that support transport, energy and urban networks in developed countries are over half a century old, and are facing widespread deterioration. Geopolymers are an affordable class of materials that have promising applications in concrete structure coating, rehabilitation and sensing, due to their high chloride, sulphate, fire and freeze-thaw resistances and electrolytic conductivity. Work to date has, however, mainly focused on geopolymers that require curing at elevated temperatures, and this limits their ease of use in the field, particularly in cooler climates. Here, we outline a design process for fabricating ambient-cured fly ash geopolymer coatings for concrete substrates. Our technique is distinct from previous work as it requires no additional manufacturing steps or additives, both of which can bear significant costs. Our coatings were tested at varying humidities, and the impacts of mixing and application methods on coating integrity were compared using a combination of calorimetry, x-ray diffraction and image-processing techniques. This work could allow geopolymer coatings to become a more ubiquitous technique for updating ageing concrete infrastructure so that it can meet modern expectations of safety, and shifting requirements due to climate change.

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Section: Resultsmentioning

confidence: 88%

Ambient Cured Fly Ash Geopolymer Coatings for Concrete

et al. 2019

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“…These devices can be easily embedded in various structural members, such as beams, columns, and slabs. Perry et al [4] employed a network of 11 thermocouple sensors to determine the strength of an concrete foundation by using the maturity method. In addition to the maturity index, which is a function of the temperature and time, smart aggregates embedded with piezoceramic material are used for determining the compressive strength by adopting wireless sensors.…”

Section: Introductionmentioning

confidence: 99%

An Intelligent Health Monitoring System for Buildings Based on IoT Technology

Zhu,

He,

Qiu

2024

AETR

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This paper presents the design and development of an intelligent health monitoring system for buildings, utilizing IoT (Internet of Things) technology. In addressing a prevailing issue in current building stress monitoring methods, which often overlooks point cloud data preprocessing, we propose a method that focuses on monitoring vertical stress points in concrete structures and aligning the collected data with finite element analysis models. Subsequently, harnessing the potential of IoT technology, we design a Zigbee-based scheme for collecting environmental data within the building. This scheme incorporates a diverse array of sensors and encompasses the construction of a comprehensive software and hardware system alongside a monitoring platform. The resulting system is adept at real-time monitoring and data collection across various facets of the building, ensuring alignment with actual conditions. It demonstrates significant practical value, offering user-friendly operation, robust stability, and excellent performance in the realm of building monitoring.

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“…John et al 40 developed a cost-effective IoT-enabled system for real-time monitoring of early-age compressive concrete strength. Perry et al 44 trained an artificial neural network using wireless thermocouple measurements and cube compression tests to estimate the concrete strength of wind turbine foundations. Navabian 45 developed an SHM system containing a wireless smart network, data management and analysis platform, and vibration-based nonlinearity method for damage evaluation in large civil structures.…”

Section: Introductionmentioning

confidence: 99%

Review on recent advances in structural health monitoring paradigm for looseness detection in bolted assemblies

Chelimilla

Chinthapenta

Kali

et al. 2023

Structural Health Monitoring

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The integrity of bolted joints is still a challenging problem owing to the gross or localized slip at the interfacial surfaces of the joints when subjected to external disturbances such as vibrations. This slip escalates the interfacial movement and, thus, leads to a decrease in preload levels, that is, looseness of the bolted assemblies. In the last decade, modal analysis, wave propagation, and percussion methods were traditionally used to detect looseness in bolted connections. With an increase in computational power, machine learning algorithms such as neural networks, random forests, decision trees, and support vector machines complemented the traditional methods in accurate looseness estimation. Subsequently, this integration paved the path for real-time health monitoring of bolted joints. This paper summarizes recent investigations on looseness detection in bolted assemblies based on traditional methods and machine learning algorithms. The working principle, advantages, challenges, and applications of the aforementioned methods are also detailed in this paper. Apart from these investigations, the latest studies on the Internet of Things-based health monitoring of structures are also reviewed to explore their adaptability in remote monitoring of bolted connections for damage detection in the future.

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Wireless Concrete Strength Monitoring of Wind Turbine Foundations

Cited by 14 publications

References 34 publications

Ambient Cured Fly Ash Geopolymer Coatings for Concrete

Ambient Cured Fly Ash Geopolymer Coatings for Concrete

An Intelligent Health Monitoring System for Buildings Based on IoT Technology

Review on recent advances in structural health monitoring paradigm for looseness detection in bolted assemblies

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