Article
Energy & Fuels
Khairun Nisa Khamil, Mohd Faizul Mohd Sabri, Azdiana Md Yusop, Fatimah Al-Zahrah Mohd Sa'at, Ahmad Nizam Isa
Summary: The study focuses on designing a thermoelectric energy harvesting system (TEHs) to convert waste heat from asphalt pavements into useful electrical energy by utilizing H-shape elements for underground cooling to achieve high temperature differences (ΔT). The simulation and experimental validation show a 75% improvement in ΔT using the H-shape cooling element compared to traditional designs, with the size of the cooling element affecting heat distribution. The field testing results confirm the simulation findings, demonstrating the potential of TEHs in charging supercapacitors for automatic street lights.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Simon Lineykin, Moshe Sitbon, Alon Kuperman
Summary: This study presents the stages of modeling, development, optimization, assembling, and experimental validation of a thermoelectric harvester for powering low power-consuming nodes of a wireless sensor network. The experiments confirmed the energy output of the thermoelectric harvester under specific temperature difference conditions.
Article
Chemistry, Multidisciplinary
Yucheng Xiong, Guoqing Zhou, Nien-Chu Lai, Xiaomeng Wang, Yi-Chun Lu, Oleg Prezhdo, Dongyan Xu
Summary: This research demonstrates switchable n-type and p-type electrical conduction in Bi2Se3 nanoribbons through a facile chemical approach, opening up new possibilities for the development of thermoelectric devices and offering significant implications in the fields of spintronics and quantum computing.
Article
Construction & Building Technology
Bei Chen, Xin Yu, Fuqiang Dong, Changjiang Zheng, Shuang Zhao, Yuanzhe Zu
Summary: This study aims to develop an intelligent control system for asphalt mixture paving. A temperature cloud was mapped to monitor and visualize the quality of real-time paving. A comprehensive evaluation method based on temperature segregation index and low-temperature area index was developed. The system was found to be accurate in controlling paving temperature, thickness, and segregation degree. The impact of temperature segregation on asphalt pavement performance was explored, and the cloud map enabled real-time visualization of temperature segregation.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Yuttana Mona, Peerapong Jitsangiam, Konlayutt Punyawudho
Summary: Energy harvesting from road pavements using thermoelectric generator (TEG) modules was studied, with asphalt pavement showing superior solar energy absorption and higher electromotive force (e.m.f.) voltages compared to cement. Water-cooling system provided a larger temperature difference for generating higher e.m.f. voltages from the TEG module.
Article
Construction & Building Technology
Rong Lu, Wei Jiang, Jingjing Xiao, Chengwei Xing, Chong Ruan, Yupeng Li, Wangjie Wu
Summary: This study aims to understand the influences of environmental conditions on the patterns of temperature distribution in permeable asphalt pavement (PAP) and dense asphalt pavement (DAP). The results demonstrate that temperatures in PAP were 1 to 6 degrees Celsius higher than DAP on rainless days. The heat storage and dissipation efficiency of PAP within a depth range of 4 to 40 cm were better than that of DAP.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Computer Science, Artificial Intelligence
Maryam Ejaz, Qiang Ling
Summary: Thermoelectric generators (TEGs) are commonly used in microscale applications to generate power from waste-heat energy. In this study, a new MPPT-based metaheuristic optimizer called Honey badger algorithm (HBA) is implemented to maximize the energy efficiency of TEG systems. The results show that the optimized HBA method achieves efficient power tracking under various dynamic operating conditions.
Article
Chemistry, Inorganic & Nuclear
S. Emad Rezaei, Mona Zebarjadi, Keivan Esfarjani
Summary: Zirconium ditelluride, a layered two-dimensional transition-metal dichalcogenide, shows potential for thermoelectric applications due to its low thermal conductivity and strong spin-orbit coupling. Different exchange-correlation functionals significantly impact the electronic band structure and thermoelectric properties of ZrTe2. While strain can reduce band overlap, it does not improve thermoelectric properties in this case.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Thermodynamics
Nesrine Jaziri, Jens Mueller, Bjoern Mueller, Ayda Boughamoura, Nam Gutzeit, Brahim Mezghani, Ammar B. Kouki, Fares Tounsi
Summary: This paper investigates the optimal design for recovering thermal heat released from electronic power components mounted on ceramic substrates. The study showed that adding grooves around the hot element allows for an average improvement of 160% in temperature difference along the generator.
APPLIED THERMAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Min Young Kim, Sang J. Park, Gi-Yeop Kim, Si-Young Choi, Hyungyu Jin
Summary: The spin Seebeck effect is a process of converting heat energy into electricity that can be improved by optimizing the bulk and interface of the materials. By introducing the concept of 'phonon-glass magnon-crystal' and optimizing the quality of the FM/NM interface, a more efficient spin Seebeck effect can be achieved.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
A. Wesley Jeevadason, S. Padmini, C. Bharatiraja
Summary: Solar stills utilize solar energy to deliver clean water in remote locations. By monitoring and controlling temperature, the evaporation and condensation rate can be controlled to increase freshwater production.
IEEE SENSORS JOURNAL
(2022)
Article
Energy & Fuels
Luigi O. Freire, Luis M. Navarrete, Byron P. Corrales, Jessica N. Castillo
Summary: This study focuses on obtaining energy from thermoelectric generators based on Peltier cells using natural and/or artificial heat sources to generate clean energy. Through experiments and theoretical analysis, the study aims to improve the efficiency of energy production by investigating relevant parameters of energy conversion.
Article
Chemistry, Multidisciplinary
Elisa Sani, Maria Raffaella Martina, Thomas J. Salez, Sawako Nakamae, Emmanuelle Dubois, Veronique Peyre
Summary: Current environmental challenges are driving research to explore completely new concepts in sustainable and renewable energy production. This study found that a stable colloidal suspension of magnetic nanoparticles in water shows high promise as a heat transfer fluid, with great potential in solar absorption and thermoelectric effects.
Article
Nanoscience & Nanotechnology
Chunjie Ding, Tianqi Lu, Nasrullah Wazir, Weifeng Ma, Shuai Guo, Ye Xin, An Li, Ruibin Liu, Bingsuo Zou
Summary: The study demonstrates that the alloyed band gap gradient macroscale thermoelectric chip with CdSSe nanowires is an outstanding thermoelectric generator, with high Seebeck coefficient and stability, and shows even higher output voltage under illumination.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Multidisciplinary Sciences
M. E. Al-Atroush
Summary: This paper reviews the impact of climate change on the structural behavior and distress of conventional and geothermal asphalt pavement, highlighting the advantages of geothermal pavement. However, further research is needed to address the structural performance of geothermal-electrical asphalt pavement.
Article
Chemistry, Applied
Feng Li, Siqi Zhou, Sai Chen, Jian Yang, Xingyi Zhu, Yuchuan Du, Zhenglong Yang
JOURNAL OF MICROENCAPSULATION
(2018)
Article
Construction & Building Technology
Yuchuan Du, Zihang Weng, Feng Li, Gulnigar Ablat, Difei Wu, Chenglong Liu
Summary: A 2D-wavelet approach is proposed in this paper to characterize pavement texture, which can effectively recognize aggregates, predict gradation distribution, and evaluate road performances.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Zhanning Yang, Siqi Zhou, Feng Li, Rongrong Zhang, Xingyi Zhu
Summary: This study investigated the use of volcanic ash and metakaolin (MK) for road grouting materials, exploring the effects of MK and water glass (WG) on mechanical properties, setting time, and rheological properties. The results showed that compressive strength increased with MK and WG content. Additionally, MK's microstructure enhanced rheological parameters, while WG suspended particles, reducing rheological parameters. Overall, MK reduced side reactions and sodium by-products, while WG improved compressive strength with silica-aluminate filling voids.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Yang Gao, Zhongqing Hao, Xiao Zhang, Dawei Wang, Feng Li, Ziming Zhao
Summary: The use of solid waste and low-cost gel materials as substitutes for ordinary Portland cement (OPC) in emulsified asphalt (EA) binder has positive implications for the energy consumption and economic cost of cold mix asphalt (CMA) pavement. This study explores the interaction, rheological properties, and physicochemical properties of EA with direct coal liquefaction residue based geopolymers (DG) through various tests. The results demonstrate that the reaction between DG mortar and EA particles is faster and more violent than that of OPC mortar, resulting in faster demulsification of EA. Furthermore, the addition of DG to EA affects the pH value, penetration, ductility, and softening point of the binder, as well as its rheological properties.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Rongrong Zhang, Feng Li, Siqi Zhou, Yue Hou
Summary: In this study, the effect of surfactant type, dosage, and ultrasonic time on the dispersion of carbon nanofibers (CNFs) in aqueous and alkali solutions was investigated. CNFs were successfully dispersed in aqueous solutions using methylcellulose (MC), polycarboxylate superplasticizer (PC), and polyvinylpyrrolidone (PVP), while evident aggregations were observed in alkali solutions. PC performed better in alkali solutions and significantly improved the mechanical properties and pore structure of volcanic ash-based geopolymer nanocomposites.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
Yifang Chen, Feng Li, Siqi Zhou, Xiao Zhang, Song Zhang, Qiang Zhang, Yijie Su
Summary: The Ground penetrating radar (GPR) is a non-destructive and continuous electromagnetic (EM) monitoring technology used for density detection of asphalt pavement. This study introduced the random forest (RF) and extreme gradient boosting (XGBoost) approaches combined with Bayesian hyper-parameter optimization (BHPO) and cross-validation for density prediction. The results showed that the ML algorithms significantly improved the accuracy of the GPR system in predicting pavement density.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Multidisciplinary Sciences
Yutong Deng, Feng Li, Siqi Zhou, Song Zhang, Yang Yang, Qiang Zhang, Yanfei Li
Summary: A correct understanding of pavement performance change is crucial for making maintenance decisions. This study develops a predictive model that takes into account the costs of different maintenance works and reflects the continuous usage performance of the pavement. The model, trained on a dataset of five-year maintenance work data in Beijing, significantly improves the prediction accuracy of highway pavement performance using recurrent neural networks. The study demonstrates the effective use of data generated by maintenance units in predicting pavement performance.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
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)
