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
Construction & Building Technology
Haoran Cheng, Denghu Jing
Summary: This study investigated the reinforcement and compressive behavior of rat-trap bond walls using steel plate frames. The results showed that the steel plate frame effectively enhanced the compressive peak load of the wall, and increasing the steel plate thickness improved compressive strength and confinement effect. Nonlinear relations were observed between the preload ratio and the peak load, and local buckling of the steel plate frame was affected by the preload ratio. Finite element models were used to verify the experimental results, and calculation formulas for predicting the compressive peak load were developed and found to be accurate.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
Mingzhen Wang, Eric Hu, Lei Chen
Summary: This study proposes an innovative and sustainable condenser-cooling approach called Radiation-enhanced Thermal Diode Tank (RTDT) to assist in energy-saving for Refrigeration and Air-conditioning (RAC) systems. The research finds that the RTDT-RAC system can save up to 40% energy compared to the reference RAC system, with a higher Coefficient of Performance (COP) of 5.34. Additionally, the parametric analysis shows that regions with larger day and night ambient temperature differences, higher room temperature setpoints, and increased RHP radiative surface areas can effectively increase energy savings.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
Panagiota Theodoropoulou, Eleonora Brembilla, Roel Schipper, Christian Louter
Summary: This study develops an optimized glare-based control strategy for Venetian blinds in real-life buildings, aiming to improve visual conditions while saving energy. The results show that the optimized algorithm can significantly improve visual conditions for different activities in the building, although it may increase the use of electric lighting in certain cases.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
Nari Yoon, Leslie Norford, Michael Wetter, Ali Malkawi
Summary: This study developed an analytical model for window operation schedules that leverages natural ventilation for different airflow rates, thermal masses, and climate variations. The research demonstrated that proper window scheduling can significantly reduce indoor temperature and save energy.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
M. I. Nizovtsev, A. N. Sterlyagov
Summary: The effect of adding a layer of phase change material on the thermal inertia properties of the outer wall in lightweight building was numerically studied. It was found that in the regime of indoor air conditioning, adding a layer of paraffin in a foamed polyurethane wall can significantly reduce heat flux fluctuations on the inner wall surface. Additionally, locating the phase change material on the inner surface of the wall in the regime of daily in-phase fluctuations in the indoor and outdoor air temperatures produces the best effect.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
Bangyu Cheng, Jinlong Yang, Yucheng Fan, Zhi Ni, Ziyan Hang, Bowen Zeng, Huanxun Liu, Chuang Feng
Summary: This study investigates the property-microstructure relationships in graphene nanoplatelet (GNP) reinforced cement composites (GNPRCCs) using three-dimensional finite element modeling and experiments. The results reveal that GNPs aligned at 45 degrees have the most significant impact on enhancing load-bearing capacity and damage resistance of the composites. A larger GNP diameter-to-thickness ratio is beneficial for crack bridging and propagation control. The orientation and porosity of pores have significant effects on the damage behaviors of the composites, while pore shape shows negligible effects. These findings provide key guidelines for optimizing microstructural features and improving the performance and durability of construction materials.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
Navid Moghaddas-Zadeh, Mahmood Farzaneh-Gord, William P. Bahnfleth
Summary: This study presents a general procedure for designing a hybrid chiller network using a Particle Swarm Optimization algorithm to determine the optimal configuration and chiller loading distribution. Life cycle cost analysis is used to select the optimal configuration. Simulations show that the best energy and economic choices depend on the natural gas and electricity price ratio.
JOURNAL OF BUILDING ENGINEERING
(2024)
Article
Construction & Building Technology
Carolina Briceno, Miguel Azenha, Graca Vasconcelos, Paulo B. Lourenco
Summary: The conditioning of the brick units has an influence on the shear bond behavior of the unit-mortar interface. Longer immersion time improves the shear bond properties, while the cohesion values of premixed mortars are affected by the conditioning time.
JOURNAL OF BUILDING ENGINEERING
(2024)
