Article
Construction & Building Technology
Shuvo Dip Datta, Md. Habibur Rahman Sobuz, Abu Sayed Mohammad Akid, Shoaib Islam
Summary: This paper presents an experimental investigation of the properties of recycled aggregate concrete (RAC) prepared with varying sizes and replacement levels of coarse aggregate. The results show that RAC achieves lower performance values with the increment of recycled aggregate replacement level. Additionally, concrete with smaller aggregate size exhibits better performance. Empirical relationships between destructive and non-destructive testing techniques are also established to efficiently predict the properties of RAC.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Materials Science, Composites
Qing-Qing Ni, Jun Hong, Ping Xu, Zhenzhen Xu, Kirill Khvostunkov, Hong Xia
Summary: This study proposed a new nondestructive testing method EMW-NDT using electromagnetic wave technique, showing good detection sensitivity to damages such as delamination size and thickness in CFRP composites. With huge potential, this contactless method could be widely used in the field of damage detection for CFRP composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Review
Materials Science, Ceramics
Zhike Zhao
Summary: The paper discussed the potential defects in ceramic products during the production process and explored the application and development direction of non-destructive testing technology.
CERAMICS INTERNATIONAL
(2021)
Article
Construction & Building Technology
Yonggang Shen, Zhenwei Yu, Chunsheng Li, Chao Zhao, Zhilin Sun
Summary: This paper proposes an improved algorithm based on the open-source model Deeplabv3+ for concrete crack detection. By using a lightweight network model and a new training strategy, the algorithm achieves accurate and real-time detection of concrete cracks.
Article
Chemistry, Physical
Jeongnam Kim, Younho Cho, Jungwon Lee, Young H. Kim
Summary: Finite element analysis and experiments were conducted to estimate the crack depth in concrete using time-of-flight. The results showed that the analysis agreed with the experiments, and high accuracy was confirmed by comparing the obtained measurements with various formulas. In addition, methodologies for crack detection and depth evaluation for concrete structures were presented, and the expected effects of improving the soundness and safety of structures were demonstrated.
Article
Multidisciplinary Sciences
Majed Almalki
Summary: Non-destructive testing of reinforced concrete structures is crucial in construction and civil engineering. Geophysical methods, such as ultrasonic and radar, have been increasingly used to provide quantitative data for detecting deterioration and guiding quality assurance and remediation.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Wasim Abbass, Fahid Aslam, Muneeb Ahmed, Ali Ahmed, Rayed Alyousef, Abdullah Mohamed
Summary: The sewer pipeline network and water distribution system are vital urban assets for a sustainable community. Continuous evaluation of the condition of water and sewer concrete pipelines is essential to ensure reliable and cost-efficient transport of water and sewerage. Currently, the assessment is done through visual observations and non-destructive testing methods, but there is a need to shift to advanced assessment techniques.
Review
Engineering, Industrial
Isaac Segovia Ramirez, Fausto Pedro Garcia Marquez, Mayorkinos Papaelias
Summary: Additive manufacturing, a major advancement in the fourth industrial revolution, involves high-precision material deposition using various techniques to build final parts. Efficient inspection methods, such as Nondestructive Testing, are crucial for ensuring quality control and detecting faults in additive manufacturing. The selection and correct use of Nondestructive Testing techniques depend on factors such as application, manufacturing process, material type, and discontinuities. This article provides a comprehensive review and analysis of the state of the art of Nondestructive Testing in additive manufacturing, highlighting relevant works and challenges faced by each technique. It also explores the use of Machine Learning techniques for defect quantification and analysis in Nondestructive Testing.
JOURNAL OF MANUFACTURING SYSTEMS
(2023)
Article
Materials Science, Multidisciplinary
Thamer Alomayri, Ahmed M. Yosri, Babar Ali, Syed Safdar Raza, Muhammad Yaqub, Rawaz Kurda, Ahmed Farouk Deifalla
Summary: This research proposes an economic and eco-efficient approach to enhance the ductility and durability of concrete by incorporating ground blast furnace slag, recycled coarse aggregate, and coconut fiber. The results show that the modified recycled-aggregate concrete (RAC) can achieve similar or higher mechanical performance compared to unmodified natural-aggregate concrete (NAC). The addition of ground blast furnace slag effectively eliminates the corrosion risk and controls the negative effects of coconut fiber on the durability of concrete.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Analytical
The-Hien Pham, Kil-Hee Kim, Ic-Pyo Hong
Summary: This study investigates the use of a low-cost FMCW radar as part of a millimeter wave synthetic aperture radar imaging scheme for non-destructive testing purposes. By combining digital signal processing algorithms and compressed sensing algorithms, high-resolution target images can be successfully reconstructed.
Review
Construction & Building Technology
Marinara Andrade do Nascimento Moura, Armando Lopes Moreno Junior, Gisleiva Cristina dos Santos Ferreira
Summary: There is no general equation available to correlate the residual mechanical strength of concrete with ultrasonic pulse velocity under high temperatures. Therefore, it is suggested to establish a relationship between ultrasonic pulse velocity and concrete heating temperature in order to estimate the residual compressive strength more accurately through non-destructive techniques.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Alper Ozmen, Erkut Sayin
Summary: In order to prevent earthquake damage to historical masonry structures, accurate information on their material properties is important for reliable computational modelling and strengthening intervention programs. This study compared destructive and non-destructive techniques used to evaluate the original and restoration stones of Tas,horan Church in Malatya, Turkey, presenting the test results.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Agricultural Engineering
Hong Zhang, Yang Liu, Yurong Tang, Haipeng Lan, Hao Niu
Summary: Principal component analysis was used to determine the characteristic variables of Korla fragrant pear firmness, and generalized regression neural network and back-propagation neural network were employed to establish prediction models. The results showed significant correlations between firmness and six electrical parameters, with GRNN exhibiting the best performance in prediction.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Przemyslaw Sobkiewicz, Pawel Bienkowski, Wojciech Blazejewski
Summary: Microwave imaging and defectoscopy are promising techniques for dielectric composite evaluation, with relatively high penetration depth and low impact on samples and surrounding environment. The research focuses on non-destructive and noninvasive methods for quality evaluation of layered composite materials using an open-ended waveguide probe.
Article
Materials Science, Multidisciplinary
Yonglin Huang, Yi Huang, Shuncong Zhong, Caihong Zhuang, Tingting Shi, Zhenghao Zhang, Zhixiong Chen, Xincai Liu
Summary: A non-destructive testing method for crack defects in self-lubricating sliding bearing coatings based on terahertz time-domain spectroscopy was proposed in this study. Experiments revealed that the self-lubricating coating materials have good penetration and characteristic response in the terahertz band. To solve the problem caused by signal overlap, a broad learning system was used for classifying and predicting time-domain signals of crack defects. The identification accuracy for crack defects was 96.08%, and the mean relative errors of prediction for interface and internal cracks (5 to 95 μm in size) were 4.16% and 3.40% respectively. The method proved to be applicable for qualitative and quantitative evaluation of crack defects in self-lubricating coatings, providing a new idea for non-destructive testing.
Article
Geochemistry & Geophysics
A. K. Gulley, J. P. Kaipio, J. D. Eccles, P. E. Malin
GEOPHYSICAL JOURNAL INTERNATIONAL
(2017)
Article
Thermodynamics
J. M. Toivanen, T. Tarvainen, J. M. J. Huttunen, T. Savolainen, A. Pulkkinen, H. R. B. Orlande, J. P. Kaipio, V. Kolehmainen
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2017)
Article
Biochemical Research Methods
Chen Qiu, Bianca Maceo Heilman, Jari Kaipio, Paul Donaldson, Ehsan Vaghefi
BIOMEDICAL OPTICS EXPRESS
(2017)
Article
Mathematical & Computational Biology
Dong Liu, Aku Seppanen, Ville Kolehmainen
JOURNAL OF MEDICAL IMAGING AND HEALTH INFORMATICS
(2017)
Article
Computer Science, Interdisciplinary Applications
J. M. J. Huttunen, J. P. Kaipio, H. Haario
COMPUTATIONAL STATISTICS & DATA ANALYSIS
(2018)
Article
Thermodynamics
Luiz A. S. Abreu, Helcio R. B. Orlande, Marcelo J. Colaco, Jari Kaipio, Ville Kolehmainen, Cesar C. Pacheco, Renato M. Cotta
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2018)
Article
Mathematics, Applied
Ruanui Nicholson, Noemi Petra, Jari P. Kaipio
Article
Acoustics
Jenni Tick, Aki Pulkkinen, Felix Lucka, Robert Ellwood, Ben T. Cox, Jari P. Kaipio, Simon R. Arridge, Tanja Tarvainen
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2018)
Article
Neurosciences
Ville Rimpilaeinen, Alexandra Koulouri, Felix Lucka, Jan P. Kaipio, Carsten H. Wolters
Article
Mathematics, Applied
J. P. Kaipio, T. Huttunen, T. Luostari, T. Lahivaara, P. B. Monk
Article
Engineering, Multidisciplinary
Daniel A. Castello, Jari P. Kaipio
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2019)
Article
Mathematics, Applied
Jyrki Jauhiainen, Aku Seppanen, Tuomo Valkonen
Summary: Electrical impedance tomography (EIT) is a method that aims to determine the conductivity within a target body by measuring electrical signals on its surface. The inverse conductivity problem is challenging due to limited measurement data, hence requiring regularization. Traditional regularization methods focus on promoting smooth features, but for targets consisting of multiple distinct objects or materials, the Mumford-Shah (M-S) regularization familiar in image segmentation is more suitable. However, it poses numerical challenges. The study shows through theoretical analysis that a modification of the Ambrosio-Tortorelli approximation of the M-S regularizer is applicable to EIT, specifically in the complete electrode model of boundary measurements. Numerical and experimental studies confirm the practicality of this approach, producing higher quality results compared to typical regularizations employed in EIT when the conductivity of the target consists of distinct smoothly-varying regions.
Proceedings Paper
Optics
Iman T. Ardekani, Jari Kaipio, Neda Sakhaee, Hamid Sharifzadeh
TENTH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING SYSTEMS, 2019
(2019)
Proceedings Paper
Engineering, Biomedical
V. Rimpilaeinen, A. Koulouri, F. Lucka, J. P. Kaipio, C. H. Wolters
Proceedings Paper
Engineering, Biomedical
A. Koulouri, V. Rimpilaeinen, M. Brookes, J. P. Kaipio
Article
Construction & Building Technology
Qi Zheng, Chengyao Liang, Jinyang Jiang, Haiyan Mao, Karen C. Bustillo, Chengyu Song, Jeffrey A. Reimer, Paulo J. M. Monteiro, Haimei Zheng, Shaofan Li
Summary: This study used scanning transmission electron microscopy to examine defects in cement particles at the single-atom level. The researchers identified different types of defects and found that they play a crucial role in cement hydration, facilitating dissolution and providing nucleation sites for hydration products.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Anuj Parashar, Shashank Bishnoi
Summary: This study investigated the hydration of siliceous fly ash, slag, and metakaolin with calcium hydroxide, and found that the rate of hydration and phase assemblage is influenced by the alkali and sulphate content, while siliceous fly ash is less affected by alkalis and sulphates.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Peimin Zhan, Juan Wang, Hanbing Zhao, Wengui Li, Surendra P. Shah, Jing Xu
Summary: This study investigates the influence of hydrothermal synthetic conditions on the properties of C-S-H seeds and reveals the correlations between C-S-H seeds properties, hydration kinetics, and paste performances. It is found that low reactant concentrations and calcium-to-silicon ratios facilitate the production of C-S-H seeds with small size and high purity. Using C-S-H seeds with high effective surface area accelerates the hydration process of cement, resulting in refined pore structure and enhanced strength.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Zhaozheng Meng, Qing-feng Liu, Neven Ukrainczyk, Song Mu, Yufei Zhang, Geert De Schutter
Summary: This study developed a numerical framework to investigate the combined attack of sulfate and chloride ions on cementitious materials in marine and saline environments. The study quantified various chemical reactions and solved the electrostatic potential caused by multi-ion coupling. The results showed that neglecting the multi-ions coupling effect could result in an underestimated chemical coupling strength in competitive chloride-sulfate binding.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Ning Li, Cise Unluer
Summary: This study aimed to improve the carbonation efficiency and reduce processing time of recycled concrete aggregates (RCAs). Wet carbonation with seawater was found to be more efficient than dry carbonation, leading to significant reduction in water absorption and increase in density of RCAs. The compressive strength of recycled aggregate concrete (RAC) prepared with 1-hour seawater carbonated RCAs was also improved. The formation of ettringite and calcite under wet carbonation contributed to the increased density and strength, as well as improved bond strength in the interfacial transition zone of RAC. Seawater presents several advantages as a medium for wet carbonation, including its abundant availability, CO2 capture capacity, and accelerated hydration and carbonation.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Yong Tao, Yining Gao, Yanjie Sun, Roland J. -M. Pellenq, Chi Sun Poon
Summary: Decalcification of calcium silicate hydrates (C-S-H) is an important issue for the long-term safety of cement-based infrastructures. Using molecular simulations, this study reveals an important mechanism of accelerated C-S-H decalcification in seawater, which involves ion exchange between surface Ca and electrical double layers, resulting in a decrease in Ca dissolution free energy. This finding enhances the understanding and prediction of cementitious materials' degradation.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Kumaran Coopamootoo, Enrico Masoero
Summary: This study uses kinetic simulations to investigate the relationship between dissolution rate and saturation index in minerals in solution. Two distinct regimes are observed, with stresses at crystallographic defects controlling the transition between them. A parameterization of the interaction potentials is proposed to obtain consistent interfacial energies with water. The findings contribute to the current discussion on controlling reactivity using materials and defects.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Faping Li, Qianshi Chen, Yiyan Lu, Yunlong Zou, Shan Li
Summary: In this study, the impact of functionalized multi-walled carbon nanotubes and a silane coupling agent on the performance and microstructure of alkali-activated fly ash/slag pastes was investigated. The results showed that the addition of these materials can prolong setting time, improve flowability and mechanical strength, and reduce mass loss and drying shrinkage.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Yaozeng Wang, Wencui Yang, Ai Zhang, Penghuan Liu, Yong Ge
Summary: Low-temperature low-field nuclear magnetic resonance was used to analyze icing in water saturated white cement paste specimens during the freeze-thaw process at different temperatures. The experimental results were compared with classical theory, showing agreement at certain temperatures but discrepancies at others. New equations were proposed based on the analysis of specimens saturated with different solutions to relate the volume of frozen water to temperature during freezing and thawing of cementitious materials.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Shengjie Yan, Yingjie Liang
Summary: This paper proposes a fractal derivative model with a non-linear distributed-order (DOFM) to describe the multi-scaling behaviors of particle diffusion in alkali-activated materials. The DOFM is tested using experimental data and is found to effectively describe the multi-scaling diffusion behaviors of particles in the materials.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Cecilia Pesce, Richard J. Ball, Marco Molinari, Shaun Reeksting, Giovanni Luca Pesce
Summary: This study evaluates the effect of ten organic additives on the microstructure of portlandite crystals during CaO hydration. It was found that the presence of carbohydrates and sulfonates can alter the structure of portlandite and the properties of lime can be controlled by adding carbohydrates. This has significant implications for the development of new binders and reducing CO2 emissions.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Daniel Jansen, Alexander German, Dominique Ectors, Frank Winnefeld
Summary: This study used X-ray diffraction and Rietveld refinement technique to investigate a hydrous carbonate-containing brucite and found that the 001 reflection of this phase split into different patterns at different temperatures. The presence of water and/or carbonate influenced the distance between the layers in the brucite structure.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Dylan Singh, Trinh Thao My Nguyen, Evann Bustamantes, Abdul Wahab, Ahmad Hamzah Yousaf, Ian Shortt, Frank W. Foss Jr, Maria Konsta-Gdoutos, Sang Soo Lee, Erika La Plante
Summary: This study analyzes the chemical structure and morphology of magnesium silicate hydrate (MSH) grown under different concentration ratios and temperatures. The results show that increasing the magnesium to silicon ratio reduces silicate polymerization in MSH, and at higher temperatures and longer reaction times, oriented attachment of nanoparticles and enhanced crystallinity are observed. These findings provide insights into the precise chemical synthesis of MSH and its widespread use as a binder in construction.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
J. C. O. Zepper, S. R. van der Laan, K. Schollbach, H. J. H. Brouwers
Summary: This study presents a method to calculate the main phases of BOF slag based on chemical composition and validates the proposed final model through quantitative model assessment and validation approaches.
CEMENT AND CONCRETE RESEARCH
(2024)
Article
Construction & Building Technology
Yierfan Maierdan, Samuel J. Armistead, Rebecca A. Mikofsky, Qiqi Huang, Lola Ben-Alon, Wil V. Srubar III, Shiho Kawashima
Summary: This research investigated the effects of sodium alginate on the stability and 3D printability of kaolinite suspensions. The findings showed that sodium alginate could enhance the stability of kaolinite and improve the strength of printable mixtures, as well as shift the printability window.
CEMENT AND CONCRETE RESEARCH
(2024)
