Article
Acoustics
Michael Fitzka, Ulrike Karr, Maximilian Granzner, Tomas Melichar, Martin Rodhammer, Alfred Strauss, Herwig Mayer
Summary: In this study, the cyclic compression fatigue properties of concrete were investigated using the ultrasonic fatigue testing method, showing the applicability of ultrasonic testing for rapid generation of VHCF data. Methods such as observing resonance frequency, analyzing higher order harmonics of vibration, and computed tomography of specimens were successful for analyzing fatigue damage. Calorimetric evaluations were used to calculate cyclic irreversible strain in the ultrasonic VHCF test, being approximately 1% of the elastic strain.
Review
Engineering, Multidisciplinary
Abdalla Talaat, Abdelrhman Emad, Ahmed Tarek, Mohamed Masbouba, Ashraf Essam, Mohamed Kohail
Summary: Concrete compression behavior is complex and affected by factors such as specimen size, shape, and end friction. Understanding these factors is crucial for safer design and more effective testing. The review emphasizes the importance of considering these factors in concrete design and testing.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Construction & Building Technology
Mohamed Mounir Boussabnia, Daniel Perraton, Sebastien Lamothe, Herve Di Benedetto, Charles Neyret, Alan Carter, Bertrand Pouteau, Marc Proteau
Summary: This study investigated the impact of loading frequency on a high modulus asphalt concrete made with a polymer-modified bitumen. Results showed no statistically significant difference in the Wohler's law parameters at different frequencies.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Construction & Building Technology
Wenhao Liu, Deyi Jiang, Jinyang Fan, Jie Chen, William Tiedeu Ngaha
Summary: This study investigates the behavior of ordinary concrete under discontinuous cyclic compression loading and simulates the residual stress numerically. The stress cycles in the test are interrupted by zero or very low loading intervals (ZLIs). Fatigue tests show that the dissipated energy and unloading deformation modulus in a cycle after the ZLI (A cycle) are significantly higher than those in the cycle before the ZLI (B cycle). The dissipated energy and unloading deformation modulus increase with increasing stress level. The cumulative rate of fatigue damage is higher in the A cycles than in the B cycles. The mechanism of discontinuous fatigue is influenced by the residual stress caused by an uncoordinated mechanical response. Moreover, simulation results indicate that stress concentration occurs in the interfacial transition zone between the aggregate and the cement paste matrix, and the residual stress and plastic deformation increase as the difference between the elasticity modulus of the aggregate and the matrix increases.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Engineering, Civil
Sumei Zhang, Xiaozhong Li, Jian Li, Wei Lu, Jie Chen
Summary: Steel-concrete composite columns are widely used in civil engineering structures. Through experimental study, it was found that the steel-tube-confined CFST (T-CFST) has better seismic performance compared to conventional composite columns, making it a suitable choice for engineering practice.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Yukai Zhong, Ou Zhao, Ben Young
Summary: This paper presents experimental and numerical investigations into the behavior and resistance of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending. The results provide valuable insights for the design of such composite structures.
ENGINEERING STRUCTURES
(2022)
Article
Chemistry, Physical
Huating Chen, Zhenyu Sun, Xianwei Zhang, Jinhong Fan
Summary: This study conducted a four-point bending fatigue test on 97 C50 concrete specimens in the laboratory, studying the flexural fatigue behavior of plain and reinforced concrete. The statistical analysis of the test results derived empirical fatigue S-N equations and found that the stress ratio is a key factor affecting the fatigue life of concrete. The presence of steel reinforcement slightly lengthened the fatigue cracking initiation life of concrete.
Article
Engineering, Civil
You-Xin Ma, Ou Zhao, Kang Hai Tan
Summary: Experimental and numerical studies were conducted to investigate the structural performance and resistances of concrete-encased concrete-filled steel tube (CECFST) stub columns under different loading conditions. It was found that loading eccentricity and end moment ratio affect the ductility and failure mode of the specimen, leading to the proposal of new design methods to improve design accuracy.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
C. Thomas, J. Sainz-Aja, J. Setien, A. Cimentada, J. A. Polanco
Summary: The research found that concrete tested at high frequencies had a reduced fatigue life, while loading at resonance frequency did not seem to modify its breaking mechanisms.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Mechanics
Mengdi Jia, Zhimin Wu, Rena C. Yu, Xiaoxin Zhang
Summary: Through investigating the degradation of residual fracture energy of concrete under fatigue loading, it was found that there are different rates of degradation at different stages. An increase in fatigue cycles and crack opening displacement leads to a decrease in residual fracture energy, while a decrease in fatigue load level results in an increase in residual fracture energy.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Construction & Building Technology
Gui-Qin Liang, Xuan Chen, Bing-Yu Jiang, Chun-Song Jiang
Summary: With the development of reinforced concrete bridges, the fatigue problem of concrete has attracted extensive attention. In this study, gradient boosting regression tree (GBRT) and multiple linear regression (MLR) models were utilized to predict the fatigue life of concrete under repeated compression. Experimental results showed that the proposed models have higher prediction accuracy compared to existing models.
MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Mohamed Mounir Boussabnia, Daniel Perraton, Herve Di Benedetto, Sebastien Lamothe, Marc Proteau
Summary: Time-temperature superposition principle (TTSP) was validated in the fatigue domain for high modulus asphalt concrete (HMAC). The results showed that HMAC with fatigue damage remains thermorheologically simple (i.e., respects the TTSP) in the studied temperatures range.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Nanoscience & Nanotechnology
Yoshikazu Nakai, Shoichi Kikuchi, Kaito Asayama, Hayata Yoshida
Summary: The research revealed that twinning occurs under compressive stress, while detwinning only happens under tensile stress. Compression-compression fatigue tests can lead to continuous twinning, changing grain orientation and causing crack formation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Mechanical
Wang Pan, Chao Zhang, Cuixia Wang, Hongyuan Fang, Fuming Wang, Zengni Qin, Juan Zhang, Lei Wang
Summary: This study analyzed the compressive fatigue performance of foamed polyurethane grouting materials through experiments. The results showed that density has a significant impact on the fatigue performance of the foam grouting materials, and high stress levels are the main cause of cyclic failure.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Civil
Can Cui, Chengchao Guo, Qing Lu, Fuming Wang, Hongyuan Fang
Summary: Polyurethane grouting technology has been successfully used in the maintenance and reinforcement of transportation infrastructure, but the fatigue performance of polyurethane materials in concrete-polyurethane composite structures under cyclic compressive loading has not been widely studied. This research investigated the effects of key design factors on the stress-strain and fatigue performance, with the results showing a distinct three-stage strain response to stress-controlled cyclic loading and ranking the factors in terms of influence on fatigue performance.
JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS
(2021)
Article
Construction & Building Technology
Alex M. D. de Sousa, Eva O. L. Lantsoght, Mounir K. El Debs
Summary: This paper investigates the shear strength of wide members and identifies that shear slenderness and size effect have a greater influence on shear strength than the b/d ratio. Analysis reveals a clear decrease in the shear strength of continuous members under distributed loads, similar to the behavior of members under concentrated loads.
STRUCTURAL CONCRETE
(2021)
Review
Engineering, Civil
Sreenivas Alampalli, Dan M. Frangopol, Jesse Grimson, Marvin W. Halling, David E. Kosnik, Eva O. L. Lantsoght, David Yang, Y. Edward Zhou
Summary: Bridge load testing can provide valuable insights into bridge behavior and help in making decisions on maintenance or replacement. The results of load testing can be used to develop models, assess structural reliability, and estimate the remaining service life of a bridge.
JOURNAL OF BRIDGE ENGINEERING
(2021)
Article
Psychology, Multidisciplinary
Eva O. L. Lantsoght, Yvonne Tse Crepaldi, Silvia G. Tavares, Kathleen Leemans, E. W. Misty Paig-Tran
Summary: During the COVID-19 pandemic, academic parents experienced both challenges and opportunities in their work, requiring long-term solutions. Through literature review and a global survey, support and successful strategies can be provided for academic parents and universities.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Engineering, Civil
Alex M. D. de Sousa, Eva O. L. Lantsoght, Aikaterini S. Genikomsou, Pablo A. Krahl, Mounir K. El Debs
Summary: Combining normal strength concrete with ultra-high-performance fiber-reinforced concrete can significantly enhance the punching capacity and deformation capacity of slab-column connections. Placing a UHPFRC layer near the column in the slab compression zone was found to significantly increase the punching capacity, with the reinforcement ratio and configuration playing a significant role in capacity enhancements.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Eva Olivia Leontien Lantsoght, Yuguang Yang, Cor van der Veen
Summary: This paper discusses a multi-level assessment methodology for determining whether a bridge is suitable for load testing or failure testing. A decision tree is developed to help users select the appropriate testing method. The Nieuwklap Bridge in the Netherlands is used as a case study, and the analysis shows that it is not suitable for shear failure testing.
ENGINEERING STRUCTURES
(2022)
Review
Engineering, Civil
Gabriela Irene Zarate Garnica, Eva Olivia Leontien Lantsoght, Yuguang Yang
Summary: Load testing has become an effective method to assess existing concrete bridges due to aging and advancements in technology. This paper reviews the literature on load testing and measurement techniques, and provides measurement requirements and a flow chart for engineers to guide the selection of appropriate monitoring and measurement techniques during load tests.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Education & Educational Research
Eva O. L. Lantsoght
Summary: This article explores the format and differences of doctoral defence from an international perspective, categorizing the defence formats used by 26 countries. Understanding the defence format is valuable for candidates, committee members, supervisors, and administrators, and can contribute to the discussions on a standard format for the doctoral defence within the European Union.
STUDIES IN HIGHER EDUCATION
(2023)
Editorial Material
Chemistry, Physical
Eva Olivia Leontien Lantsoght
Article
Construction & Building Technology
Alex Micael Dantas de Sousa, Eva Olivia Leontien Lantsoght, Mounir Khalil El Debs
Summary: Reinforced concrete one-way slabs under concentrated loads can fail in various ways, including one-way shear, punching shear, or a combination of both. Most publications only consider the one-way shear failure mechanism when assessing the shear capacity. This study proposed recommendations to assess both one-way shear and punching shear capacities of these slabs, using different codes of practice and validated against 143 test results. The predictions based on these recommendations showed improved accuracy for both one-way shear and punching capacities.
Article
Construction & Building Technology
Daniel Vargas, Eva O. L. Lantsoght, Aikaterini S. Genikomsou
Summary: This paper presents a database of 128 experiments on eccentric punching shear and compares the results with different design codes. The comparison shows the need for improvements in the current design methods for eccentric punching shear.
Article
Construction & Building Technology
Shozab Mustafa, Eva O. L. Lantsoght, Yuguang Yang, Henk Sliedrecht
Summary: This paper investigates the predictive performance of the Dutch guidelines for nonlinear finite element analysis on the behavior of large-scale shear-critical post-tensioned girders, and the results show that the guidelines can be reliably used for assessment.
ACI STRUCTURAL JOURNAL
(2022)
Article
Education & Educational Research
Eva O. L. Lantsoght
Summary: The study examines the relationship between doctoral candidates' preparation for the defense and the defense outcome and student perception. It highlights the importance of understanding the defense format and utilizing mock defense and preparatory courses for effective preparation.
EDUCATION SCIENCES
(2022)
Article
Construction & Building Technology
Christian Overgaard Christensen, Fengqiao Zhang, Gabriela Zarate Garnica, Eva Olivia Leontien Lantsoght, Per Goltermann, Jacob Wittrup Schmidt
Summary: This study investigates the combined methodology of two-dimensional digital image correlation and acoustic emission for identifying stop criteria in proof-load tests. The results show that both monitoring systems can identify damage occurrence earlier and propose a test procedure that can be updated based on monitoring results.
Proceedings Paper
Construction & Building Technology
A. De Boer, E. O. L. Lantsoght, Y. Yang
Summary: The updated NLFEA Guidelines by the Dutch Ministry of Infrastructure and the Environment can be used for nonlinear finite element analysis of reinforced and prestressed beams and slabs. A case study demonstrates the guidelines' applicability for assessing damaged concrete bridges.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
Proceedings Paper
Construction & Building Technology
G. I. Zarate Garnica, F. Zhang, Y. Yang, C. van der Veen, E. O. L. Lantsoght, M. Naaktgeboren, S. A. A. M. Fennis
Summary: Proof load testing is an interesting method for assessing existing bridges, ensuring that they meet code requirements by successfully carrying representative loads. This paper reviews literature on load tests and measurement techniques, offering guidance for selecting appropriate monitoring and measurement techniques during load tests. The recommendations provided in this review can assist engineers in preparing for load tests and may be expanded in the future with validated stop criteria based on experimental results.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
