Article
Construction & Building Technology
Shuai Zhang, Henglong Zhang, Mingyu Zhou
Summary: By using various experimental methods and analysis models, this study comprehensively investigated the high temperature resistance and fatigue resistance of cold mixed epoxy asphalt mixture. The results showed that different gradation types of mixture exhibited distinct performance characteristics under different conditions, providing references for their application and design.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Yu Xia, Xiaodong Li, Tianyu Xie, Ruizhao Zhu, Guanghao Wang, Guixiang Yi, Jiawei Li
Summary: This study evaluated the seismic performance of RC bent columns designed according to different versions of Chinese codes. The results showed that the constructional requirements in the latest version of the code can effectively reduce stress concentration and damage while improving energy dissipation and maximum bearing capacity.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Dunja Radenovic, Durda Kerkez, Dragana Tomasevic Pilipovic, Milos Dubovina, Milos Seslija, Slaven Tenodi, Igor Pesko
Summary: In recent years, sediment has been recognized as a problematic resource due to its potential harmful effects and large quantities in water bodies. This research investigates the effects of ageing and maturation of solidified/stabilized mixtures of contaminated sediment with fly ash and lime. The study shows that the use of fly ash and lime as binders promotes the permanent structural integrity of the sediment, and the treated material can be considered environmentally friendly and used as a fill material in road construction.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Liyong Zhao, Jian Wang, Pengfei Gao, Yongyu Yuan
Summary: In this study, the effects of water-cement ratio, thickness of concrete cover, and spacing and quantity of steel bars on the corrosion characteristics of steel bars were investigated through accelerated corrosion tests on reinforced concrete specimens. The results showed that these factors had varying influences on the mass loss of steel bars, the width of corrosion-induced cracks, and the corrosion depth. The corrosion depth followed a normal distribution, while the width of corrosion-induced cracks followed an exponential distribution.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Yu Xiang, Jionghuang He, Guangcheng Long, Youjun Xie, Jilin Wang
Summary: This study introduces a testing apparatus to characterize the internal stress in fresh concrete during the thermal treatment and explores the impact of water-to-cement ratio and paste-to-aggregate ratio on internal stress. It elucidates the developmental patterns of internal stress in concrete throughout the thermal treatment phase.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Parham Shoaei, Abazar Momenzadeh, Hamed Hosseini, Shahin Rajaei, Farshad Ameri, Shima Pilehvar
Summary: This study investigates the feasibility of using natural zeolite as a precursor for geopolymer mortars, finding that zeolite addition reduces workability but increases porosity in the mortar structure.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Yubo Jiao, Wenlong Du, Hua Yang, Hongjun Shi
Summary: This study investigated the reinforcing effect of glass fiber on failure behavior of asphalt concrete at low temperature using AE and DIC techniques. The results showed that AE parameters could effectively classify and characterize the failure processes. The effect of fiber length on the failure process was also studied.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Leiming Wang, Liang Cheng, Shenghua Yin, Peizheng Liu
Summary: This paper investigates the factors affecting the agglomeration of ores and proposes the optimal preparation conditions to improve the pore structure and leaching rate of heap leaching systems. The results show that well-shaped agglomerations significantly enhance the leaching efficiency of minerals, and the preparation conditions include curing time, binder concentration, inclined angle, and rolling speed.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Omer Mercimek, Yasar Erbas, Sercan Tuna Akkaya, Ozgur Anil, Mustafa Fener
Summary: This study investigates the adverse effects of openings in flat slabs through experiments and theoretical calculations, and considers the application of the superposition principle.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Bailin Li, Fei Luo, Xiaodong Li, Jiaming Liu
Summary: This paper presents an experimental study on the role of rice husk ash (RHA) in the mechanical improvement of soil. The results show that the incorporation of RHA substantially enhances the soil's strength, stiffness, and ductility. The study findings contribute to guiding the effective application of RHA in civil engineering and promoting the sustainable development of construction materials.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Tohid Yahyaee, Seyed Rahim Mofidi
Summary: This study investigates the potential of improving surface water quality through the use of porous concrete and other additives, as well as the impact of varying aggregate quantities and water-to-cement ratios on the mechanical properties of concrete. The results show that MWCNT is highly effective in removing COD and dye pollutants from surface runoff water.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Construction & Building Technology
Ziwei Cai, Xinzhi Duan, Lingfei Liu, Zhoudao Lu, Junhong Ye
Summary: This paper investigates the influence of shear span ratios, reinforcement ratios, and material types on the flexural and shear performance of UHPC beams. The findings show that appropriate LR and SR ratios can significantly increase the load capacity of the beams. UHPC beams made with a combination of polyethylene and steel fibers exhibit the highest load capacity.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2024)
Article
Engineering, Chemical
Chuannan Li, Jie Chen, Changbo Jiang, Xie Li, Zhiyuan Wu
Summary: This research investigates the incipient velocity of observation particles in two particle arrangements through water tunnel experiments. It proposes an equation based on the rolling instability mechanism to accurately predict the incipient velocity. The dispersive pressure is closely related to the flow state, particle size, and particle arrangement, and the interference particle angle of 45 degrees results in the minimum incipient velocity. The particle spacing and projected area directly influence the incipient velocity of observed particles.
Article
Engineering, Chemical
Chao Zheng, Edward Yost, Ariel R. Muliadi, Nicolin Govender, Ling Zhang, Chuan-Yu Wu
Summary: This paper analyzes the die filling process using a discrete element method, and evaluates the influence of different stirrer designs on the filling performance. The results show that the helical-ribbon stirrer design exhibits the highest filling ratio and is the most robust design. Furthermore, the stirrer speed and filling speed have an impact on the filling performance.
Article
Engineering, Chemical
Peikun Li, Yanchao Wang, Xiuyan Luo, Zixin Geng, Jiahui Jia, Ruirui Wang, Jiandong Cui, Hongjie Bian, Shiru Jia
Summary: A new nanozyme/natural enzyme hybrid biosensor was developed for ultrasensitive detection of L-glutamic acid (L-Glu). Fe3O4 nanoparticles with peroxidase-like activity and stability were used as a nanozyme and carrier to immobilize L-Glutamate oxidase (GLOD), forming a chem-enzyme cascade detector. The Fe3O4-GOLD showed a wide linear range and low detection limit, as well as excellent stability.
Article
Engineering, Chemical
Lan Zhou, Jingpeng Ye, Qinze Cai, Guojin Liu, Mehran Dadgar, Guocheng Zhu, Guoqing Zhang
Summary: A new formulation of mixed-colorants thermochromic core material is designed to expand the color-change range and make the discoloration temperature suitable for daily textiles. The morphology, encapsulation rate, non-isothermal crystallization behavior, and thermal stability of the MCTMs prepared by in-situ polymerization were studied using SEM, DSC, and TGA. The results show that MCTMs have good sphericity, uniform particle size, good thermal stability, and can achieve reliable and durable reversible color change.
Article
Engineering, Chemical
Jianpei Shi, Zhongde Shan, Haoqin Yang
Summary: In this study, the macro- and meso-mechanical properties of frozen sand molds were discussed using the HMB model. A parameter calibration methodology was proposed and the effects of mesoscopic parameter variations on the compressive strength and stress-strain gradient were investigated. The study also verified the reliability and effectiveness of the frozen sand mold HMB model through compression tests and simulations.
Article
Engineering, Chemical
Matthias Tyslik, Lukas Poertner, Siegmar Wirtz, Martin Schiemann
Summary: A novel test rig for investigating radiative heat transfer in packed beds is introduced, along with experimental results. The rig uses parallel rods to represent particles in a simplified manner, and employs various techniques such as thermocouples and infrared imaging to gather detailed information about heat transfer. The results demonstrate that different surface properties of particles significantly influence heat propagation and surface reflections.
Article
Engineering, Chemical
Zhilong Wang, Zhenzhen Zhao, Ye Yang, An Zhang, Xiayi Liu, Tong Zhao, Yahui Cui
Summary: This paper presents the effects of PVDF/CB ratio and mixing time on the dispersion mechanism of the cathode slurry of lithium-ion battery. The study reveals that under specific conditions, a stable gel structure and conductive network can be formed, which can improve the performance of the battery.
Article
Engineering, Chemical
Xing Li, Qun Chen, Zhaozhao Liu, Cheng Zhou, Chen Wang, Chen Chen
Summary: The particle size distribution (PSD) curve is an important expression of soil properties. However, existing characteristic parameters can only represent some points of the curve and fail to capture all the information. This paper introduces a new fraction characteristic parameter based on grading entropy and proposes a refined presentation method for the PSD curve. The new method not only represents the differences in curve width more accurately but also has higher discrimination ability. The application of this method in describing deposit distribution and predicting soil hydraulic conductivity is discussed. The research results can provide reference for the refined representation of PSD curves.
