Article
Construction & Building Technology
Qian Huang, Xiaohong Zhu, Guangqi Xiong, Chaoqiang Wang, Dongsheng Liu, Liang Zhao
Summary: The study found that regardless of curing conditions, recycled mortars with dry WCB had higher mechanical properties and lower water absorption, while the opposite was true for pre-soaked WCB mortars. Although the internal curing effect of WCB was more pronounced under air curing, overall performance was better under standard curing conditions. Incorporation of dry or pre-soaked WCB increased the porosity of recycled mortars, which could be used for producing cleaner building materials.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Yan He, Shuhua Liu, R. D. Hooton, Xiong Zhang, Shun He
Summary: The effects of triethanolamine (TEA) on the rheological properties and hydration performance of lithium slag (LS) composite binder were examined. Proper amounts of TEA enhanced dissolution of Si4+ and Al3+ ions, promoting pozzolanic reactions and resulting in denser microstructure and increased mechanical strength, while excessive amounts delayed the hydration process and impaired early mechanical performance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Organic
Linh Tran Bao Nguyen, Cheng-Lin Wu, Tzu-Chau Lin, Manabu Abe
Summary: This study developed a simple and novel octupolar chromophore with potential as a two-photon probe for bioimaging. The compound exhibited comparable two-photon absorption performance to previous compounds. Additionally, ethylene glycol tetraacetic acid-substituted derivatives with octupolar or dipolar characteristics were synthesized and their ability to release calcium ions under one-photon and two-photon excitation was confirmed.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Engineering, Chemical
Shaokang Zhang, Ru Wang, Linglin Xu, Andreas Hecker, Horst-Michael Ludwig, Peiming Wang
Summary: The study aimed to investigate the influence of HEMC with different total substitution degrees and PAAm modification on steel slag cement mortar properties. Results showed that HEMC improved water retention rate, consistency, tensile bond strength, and flexibility, but reduced compressive strength and flexural strength. Total substitution degree or PAAm modification had minor effects on water retention rate, compressive strength, flexibility, and pore size distribution.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
P. A. Storozhenko, I. V. Zhigacheva, M. M. Rasulov
Summary: The study shows that Zitrimin can inhibit the activity of cholesterol esterase, helping to address subcellular structural issues during the development of atherosclerosis and providing prospects for the development of new drugs.
RUSSIAN CHEMICAL BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
P. A. Storozhenko, I. V. Zhigacheva, M. M. Rasulov
Summary: Zitrimin has the previously unknown ability to decrease cholesterol and total lipid levels in aortic tissue and reduce aortic damage with atherosclerotic plaques. The development of atherosclerosis is associated with an increase in acid lipase activity in the aortic intima.
RUSSIAN CHEMICAL BULLETIN
(2021)
Article
Nanoscience & Nanotechnology
Le Thi Mai Hoa
Summary: In this study, a facile method for surface functionalization of multi-walled carbon nanotubes (MWCNTs) with tris(2-aminoethyl)amine (TAA) was demonstrated. Characterization techniques such as FE-SEM, TEM, FTIR, Raman spectroscopy, and TGA were employed to evaluate the pristine MWCNTs and TAA-functionalized MWCNTs (MWCNTs-TAA). The results indicated a significant improvement in dispersion and surface properties of MWCNTs-TAA, as well as the successful grafting of amine groups onto the nanotubes' surfaces.
ADVANCES IN NATURAL SCIENCES-NANOSCIENCE AND NANOTECHNOLOGY
(2021)
Article
Mathematics, Interdisciplinary Applications
Zhu Huang, Tao Wang, Wei Liu, Luis Valencia-Cabrera, Mario J. Perez-Jimenez, Pengpeng Li
Summary: This paper proposes a fault analysis method for motors based on modified fuzzy reasoning spiking neural P systems with real numbers (rMFRSNPSs), aiming to improve the working safety, reliability, and economy of three-phase induction motors through fault prediction and abductive fault diagnosis. By introducing fault fuzzy production rules, the rMFRSNPS model, and reasoning algorithms, as well as conducting case studies, the feasibility and effectiveness of the proposed method are validated.
Article
Construction & Building Technology
Yang Xu, Ming Liu, Pengpeng Li, Li Zhu, Xiujian Xia, Chi Zhang, Yongjin Yu, Jintang Guo
Summary: The study evaluated the impact of different dispersants on the rheological and mechanical properties of nanosilica filled cementitious composites. It was found that PC and APC dispersants improved the flow properties of the composites and facilitated cement hydration and microstructure development. However, the PC dispersant's retardation effect could hinder early compressive strength development, which was mitigated by the introduction of cationic groups in APC dispersant.Overall, all dispersants enhanced the dispersion of nanosilica in cement and improved the mechanical properties of the composites.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Thermodynamics
Lei Zhang, Pengpeng Li, Jie Chen
Summary: This study investigates the conjugate heat transfer of nanofluids within fibrous medium at pore scales, utilizing correction terms projected into the thermal MRT LB scheme to handle heat flux discontinuities near complex interfaces. A random-walk-based stochastic model is used to generate the fibrous medium. The results show that for conjugate heat transfer without convective flow, steady-state temperature profiles are independent of the fiber-to-fluid thermal conductivity ratio, while for conjugate heat transfer with convective flow, heat transfer is enhanced with larger ratios. Additionally, high Reynolds numbers dominate the heat transfer process with a considerable decrease in temperatures for different ratios. The 3D pore-scale temperature distributions are provided to demonstrate the capability of the current conjugate thermal LB model.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Polymer Science
Shi Liu, Wenming Liu, Ben Qi, Zhihui Lin, Pengpeng Li, Chaoming Wu, Qingchang Zhang, Miaomiao Hu, Jintang Guo
Summary: By adding bisphenol F epoxy resin, dicyandiamide hardener, and urea accelerator, an epoxy resin system has been developed to prevent casing-casing annulus pressure. The system meets the requirements of on-site construction with initial consistency less than 30 Bc, thickening time of 3-4 hours, and compressive strength above 27 MPa at 90 degrees C.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Environmental Sciences
Linjun Li, Jinsuo Lu, Heliang Pang, Zhiqiang Zhang, Jing Yang, Pengpeng Li, Xiaoyu Yan, Miaomiao Fan
Summary: The components in tea react with the hardness and alkalinity of water, inhibiting the formation of scale and reducing the concentration of calcium ions and turbidity. They also decrease the alkalinity and pH of the water.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Guoliang Bai, Wei Wei, Benqiu Wang, Chunhua Wang, Na Liu, Jihu Jiang, Pengpeng Li
Summary: Monoclinic Li1+xV3O8 cathode materials synthesized by sol-gel method exhibit good electrochemical properties, including high initial discharge/charge specific capacities and cycle performance under 50 mA g(-1) current, along with good rate performance.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Psychology, Multidisciplinary
Fangqi Zhong, Pengpeng Li, Jinchao Xi
Summary: This study explores the correlation between social media use frequency, online political participation, social capital, and well-being. It proposes two socialization models that affect citizen well-being and provides strategic suggestions for democratic society construction and network management.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Psychology, Multidisciplinary
Peng-Peng Li, Fangqi Zhong
Summary: People's perceptions and behavioral cooperation greatly influence the effective control and mitigation of risk events. This study found that the frequency of media use significantly influences people's emotions and risk perceptions, and the perception of efficacy for risky events is the strongest predictor of risk control behavior.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Construction & Building Technology
Ming Liu, Miaomiao Hu, Pengpeng Li, Hang Zhang, Jiaqi Zhao, Jintang Guo
Summary: Enhanced autogenous healing using a cement-polymer composite additive (CPCA) was found to improve the durability and sustainability of cementitious materials. The addition of CPCA-4 improved the compressive strength of hardened cement and enhanced the autogenous healing effectiveness of the matrix.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Engineering, Environmental
Yajian Wang, PengPeng Li, Jianfeng Li
Summary: The deterioration of sewage pipes is a major factor in global asset losses and urban hazards. To better manage these pipes, various monitoring and non-destructive testing techniques have been developed for defect inspection and condition assessment. This paper provides an overview of sewage pipe monitoring methods and the fundamentals of different non-destructive testing techniques. It also discusses technologies that could be used to create a digital twin of the pipeline. Additionally, the capabilities and limitations of these technologies are discussed, and possible future developments in sewage pipe inspection and quantitative evaluation are suggested.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Yajian Wang, Huifang Liu, Pengpeng Li, Linbing Wang
Summary: This study investigated the contribution of different cross-linking structures to the dynamics and mechanical properties of EPDM. It was found that cross-linking had a positive influence on mechanical characteristics, but the relaxation inhibition effect varied.
Article
Public, Environmental & Occupational Health
Fangqi Zhong, Li Pengpeng, Zhuo Qianru
Summary: This study focuses on the daily interactions of cancer patients in a WeChat mutual help group and explores how social media technology can assist in the treatment and recovery process for cancer patients. The research finds that the WeChat group is a timely, popular, continuous, and accurate source of health knowledge for participating cancer patients. It also shows that the group provides patients with emotional support, recognition, and encouragement. In addition, the study reveals that the WeChat mutual aid group enhances patients' self-efficacy through successful experiences, imitating behavior, verbal persuasion, and emotional support.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Biochemical Research Methods
Ruibin Bai, Yanping Wang, Yangyang Cao, Huaqiao Yu, Pengpeng Li, Guolin Chai, Xiaodong Li, Wen Li, Fang Cui, Fangdi Hu
Summary: This study characterized the oligosaccharide fingerprints of different varieties of Codonopsis Radix (CR) and found that they contained inulin- and levan-type fructooligosaccharides (FOS) with variations in relative levels among the varieties. Through combined analysis, it was possible to accurately classify and identify the different CR varieties.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Construction & Building Technology
Yajian Wang, Fei Su, Pengpeng Li, Wentao Wang, Hailu Yang, Linbing Wang
Summary: Microbiologically induced concrete corrosion (MICC) and stress cracks are common structural defects in concrete sewer pipes. This study investigated the behavior of microbial corrosion in cracked concrete pipes under sustained loading. The results showed that stress levels slightly accelerated the pH drop on the surface, correlated with the corrosion product content, and caused stress-corrosion cracking of the semi-corrosive layer. However, stress had little effect on corrosion loss. Understanding these processes is important for improving the service life of sewage pipes.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Multidisciplinary
Ming Liu, Miaomiao Hu, Pengpeng Li, Qinglu Chang, Jintang Guo
Summary: In this study, an alkali-responsive mineral self-healing agent (AMS) was developed by loading phosphate into halloysite nanotubes (HNTs). The incorporation of AMS effectively reinforced the mechanical properties of cement pastes and promoted self-healing efficiency. XRD analysis showed the stability of phosphate encapsulated in AMS before crack occurrence. The presence of AMS in damaged cement pastes triggered autonomous healing and significantly improved self-healing efficiency.
COMPOSITES PART B-ENGINEERING
(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)
