Article
Construction & Building Technology
Ismail Kaplanvural
Summary: This study uses Particle Swarm Optimization (PSO) method to invert Groundpenetrating radar (GPR) traces and investigate the Volumetric Water Content (VWC) of concrete block. PSO is used to estimate the relative dielectric permittivity, relative magnetic permeability, and electrical conductivity values of concrete. The study aims to avoid errors caused by the picking of reflections in traditional velocity estimation method by using PSO as an inversion tool to estimate the relative dielectric permittivity.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Chemistry, Physical
Ksenija Tesic, Ana Baricevic, Marijana Serdar
Summary: Ground-penetrating radar (GPR) is widely used in the corrosion assessment of concrete structures, focusing on reinforcement corrosion. However, laboratory studies have not fully revealed the impact of corrosion process on GPR signal, and there is no clear relationship between laboratory results and on-site inspection. Further laboratory investigations are needed to clarify the influence of corrosion process on GPR signal in structure assessment.
Article
Geosciences, Multidisciplinary
Chenyang Zou, Shuangxi Zhang
Summary: The study investigates the effect of Sponge City construction on urban pedosphere moisture capacity in China. Different ground-penetrating radar techniques are used to estimate moisture content, and the combination of 2D common offset GPR with 3D multichannel GPR is proposed to resolve subsurface moisture content estimates at a complex field scale. The research provides valuable information for Sponge City construction and other engineering applications.
JOURNAL OF APPLIED GEOPHYSICS
(2022)
Article
Computer Science, Information Systems
Yan Xu, Jieli Duan, Rui Jiang, Jun Li, Zhou Yang
Summary: The study focused on exploring the feasibility of measuring soil water content using pulsed acoustic wave (PAW) method. It found that acoustic velocity was more suitable than acoustic attenuation coefficient for calibrating soil water content models, and field experiments verified the potential value of pulse acoustic velocity in detecting soil volumetric water content.
Article
Geosciences, Multidisciplinary
Tathiana Rodrigues Caetano, Hersilia Andrade Santos, Remke Leander van Dam
Summary: This study demonstrates the effectiveness of Ground Penetrating Radar (GPR) and Electrical Resistivity (ERT) methods in detecting water leakage from a specific large unpressurized pipeline. These methods can indicate soil zones related to water losses and their accuracy depends on environmental factors and the time of the leaking opening. The application of geophysical technologies in water resource management can help address losses in the water supply system.
JOURNAL OF APPLIED GEOPHYSICS
(2023)
Article
Construction & Building Technology
Feifei Zhou, Ganghua Pan, Haining Meng, Renjie Mi
Summary: This study investigated the influence of microwave curing and secondary water curing on the performance of C30 concrete. The combination of the two methods was found to increase compressive strength, refine pores, enhance carbonation resistance, and improve corrosion resistance of reinforced concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Fei Xie, Wallace W. L. Lai, Xavier Derobert
Summary: The proposed Constraint Least Square (CLS) fitting method in GPR measurement can accurately calculate the depth of buried pipes by simultaneously addressing trigonometric, velocity estimation, and two-way travel time components, reducing the percentage error of estimated depth and improving accuracy compared to traditional methods.
Article
Engineering, Civil
Ye Ma, Mostafa A. Elseifi, Nirmal Dhakal, Mohammad Z. Bashar, Zhongjie Zhang
Summary: Ground penetrating radar (GPR) can be used to detect stripping damage in asphalt pavements. A new indicator (AIP) was developed using simulation program and field data to effectively detect and evaluate the presence, extent, and severity of stripping in pavement sections. The AIP showed accuracies of 80% for stripped sections and 96% for non-stripped sections in detecting stripping damage in flexible pavements.
TRANSPORTATION RESEARCH RECORD
(2021)
Article
Construction & Building Technology
Peter King-Wah Lau, Bella Wei-Yat Cheung, Wallace Wai-Lok Lai, Janet Fung-Chu Sham
Summary: Moisture content in dielectric media affects GPR wave velocity, used to estimate pipe leak location but requires knowledge of pipe depth. This paper proposes a combination velocity algorithm successfully applied in water leakage detection.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Construction & Building Technology
Kien Dinh, Nenad Gucunski
Summary: This study aimed to explore factors affecting the detectability of concrete delamination in GPR images, using both synthetic and real data. The analysis revealed that factors such as delamination thickness, material within it, and emitted signal frequency impact the detectability, while the depth of delamination and its position relative to neighboring steel bars may also affect detection results.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Geosciences, Multidisciplinary
Matteo Dossi, Emanuele Forte, Sergio Andri, Andrea Nardini, Riccardo Vella, Michele Pipan
Summary: This study investigated water percolation in a controlled environment to understand drainage processes, recover internal material properties, and quantify electromagnetic behavior. An analogue green roof model was used to collect and analyze GPR data to estimate water content and permittivity. Empirical formulas were applied to calculate porosity and relative electrical permittivity of the solid matrix, with results validated against direct measurements.
JOURNAL OF APPLIED GEOPHYSICS
(2021)
Article
Chemistry, Physical
Dong Viet Phuong Tran, Abbas Allawi, Amjad Albayati, Thi Nguyen Cao, Ayman El-Zohairy, Yen Thi Hai Nguyen
Summary: The study found that the mechanical properties and durability of medium-quality concrete incorporating recycled coarse aggregate were similar to reference concrete, but the workability significantly decreased as the replacement percentage of recycled coarse aggregate increased. Additionally, the recycled concrete exhibited higher porosity, leading to longer sound transmission times compared to reference concrete.
Article
Construction & Building Technology
Yanhui Zhong, Pan Wang, Bei Zhang, Cheng Cao, Xiaoyu Du, Di Duan, Yaowei Ni, Yilong Wang
Summary: Water has a significant impact on the dielectric constant of cement concrete. By considering the water content and porosity, a four-phase mixing model of cement concrete is established. Experimental results show that water enhances the dielectric constant of cement concrete, and this effect depends on the water saturation and porosity. A composite dielectric model considering water saturation is developed to improve the accuracy of prediction under different water saturation conditions, which is important for the application of ground-penetrating radar in cement concrete pavement quality inspection.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Review
Construction & Building Technology
Maohua Zhang, Shanghui Sun, Ke Liu, Tao Li, Haixu Yang
Summary: This paper summarizes the factors influencing the critical chloride content in marine concrete reinforcement corrosion and systematically elaborates the determination methods of corrosion initiation time. The analysis suggests that nanomaterials have a significant impact on the critical chloride content. Additionally, concrete in the splash zone and tidal zone is more susceptible to chloride erosion, emphasizing the importance of addressing this in practical engineering.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Mengyao Ni, Qingyuan Sheng, Xiliang Zhang
Summary: This study proposed a low-cost capacitance sensor with dual frequency excitation for soil water content measurement, and introduced a two-step calibration method to reduce the impact of soil bulk electrical conductivity on water content. The results indicated that the two-step calibration method was more accurate and effective compared to empirical equations.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Isabel Rodriguez-Abad, Gilles Klysz, Rosa Martinez-Sala, Jean Paul Balayssac, Jesus Mene-Aparicio
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2016)
Article
Construction & Building Technology
A. Q. Nguyen, G. Klysz, F. Deby, J. P. Balayssac
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Computer Science, Interdisciplinary Applications
X. Ferrieres, G. Klysz, P. Mazet, J. P. Balayssac
COMPUTER PHYSICS COMMUNICATIONS
(2009)
Article
Engineering, Civil
Jean-Paul Balayssac, Stephane Laurens, Gilles Klysz, Jean-Francois Lataste, Xavier Derobert
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2011)
Article
Architecture
Rani Hamrouche, Gilles Klysz, Jean-Paul Balayssac, Jamal Rhazi, Gerard Ballivy
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2012)
Article
Materials Science, Characterization & Testing
G. Klysz, J. P. Balayssac, X. Ferrieres
NDT & E INTERNATIONAL
(2008)
Article
Materials Science, Characterization & Testing
Xavier Derobert, Jean Iaquinta, Gilles Klysz, Jean-Paul Balayssac
NDT & E INTERNATIONAL
(2008)
Article
Materials Science, Characterization & Testing
K. Viriyametanont, S. Laurens, G. Klysz, J. -P. Balayssac, G. Arliguie
NDT & E INTERNATIONAL
(2008)
Article
Engineering, Multidisciplinary
X. Ferrieres, G. Klysz, V. Guihard, M. Albrand
Summary: The goal of this study is to develop a tool to evaluate the moisture content gradient in the depth of reinforced concretes in the context of building safety. By proposing an experimental device based on radar measurements and a 3D numerical model, the study presents a method for solving the inverse problem of determining the dielectric profile of concrete, which is validated on measured data obtained for control samples.
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING
(2021)
Article
Construction & Building Technology
A. Q. Nguyen, G. Klysz, F. Deby, J. -P. Balayssac
CEMENT & CONCRETE COMPOSITES
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
M. Albrand, G. Klysz, X. Ferrieres
2017 9TH INTERNATIONAL WORKSHOP ON ADVANCED GROUND PENETRATING RADAR (IWAGPR)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
M. Albrand, G. Klysz, Y. Grisel, X. Ferrieres
2017 9TH INTERNATIONAL WORKSHOP ON ADVANCED GROUND PENETRATING RADAR (IWAGPR)
(2017)
Article
Geosciences, Multidisciplinary
Isabel Rodriguez-Abad, Gilles Klysz, Rosa Martinez-Sala, Jean Paul Balayssac, Jesus Mene-Aparicio
GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS
(2016)
Proceedings Paper
Engineering, Electrical & Electronic
I. Rodriguez-Abad, R. Martinez-Sala, J. Mene, G. Klysz
PROCEEDINGS OF THE 2014 15TH INTERNATIONAL CONFERENCE ON GROUND PENETRATING RADAR (GPR 2014)
(2014)
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)