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Article
Construction & Building Technology
Wanhui Feng et al.
Summary: The study investigated the mechanical characteristics of rubber-modified recycled aggregate concrete (RRAC) prepared from recycled aggregate (RA) and waste rubber particles (RPs) exposed to different temperatures. Results showed relationships between various parameters and established accurate predictive models for UCS and peak strain.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Benben Li et al.
Summary: The utilization of recycled aggregate concrete (RAC) is important for the development of green building materials as it allows for the full utilization of waste concrete. However, there is currently a limited understanding of the failure surface of RAC under different compression conditions. This study proposes equations for the compressive meridian and tensile meridian of RAC in octahedral stress space, taking into account the influence of high temperatures. Experimental validation of these equations for both room temperature and high temperatures was conducted.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Tao Shi et al.
Summary: The present study investigates the effects of different calcination temperatures on the appearance, mineral composition, and active SiO2 content in attapulgite. It also examines the influence of calcined attapulgite on the chemically bonded water content, hydration degree of cement paste, and mechanical properties of cement mortar. The results suggest that a calcination temperature of 500 degrees C yields the best enhancement in cement-based materials' hydration activity. This study highlights the potential of using calcined attapulgite clay to reduce energy consumption in the cement industry and promote the sustainable development of attapulgite clay.
INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS
(2022)
Article
Engineering, Civil
Wanhui Feng et al.
Summary: This study investigates the real strain-rate effects of rubberised concrete (RC) through experimental and numerical simulations. The results show that rubber particles effectively reduce the density and improve the deformation capacity of concrete, making it more rate-sensitive. Additionally, interface friction significantly contributes to lateral confinement in concrete.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Review
Construction & Building Technology
Xiuling Wang et al.
Summary: This paper reviews the compressive strength of circular concrete-filled steel tube stub columns (CFST-SCs) and evaluates the applicability and reliability of international design specifications for predicting compressive strength. The study reveals that all specifications yield conservative predictions on the strength capacity of CFST-SCs. Additionally, the paper provides recommendations for preventing buckling failure and assesses the applicability of existing guidelines for evaluating axial strength of CFST-SCs.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Geochemistry & Geophysics
Yanhui Guo et al.
Summary: This study develops fault similar materials and surrounding similar rock materials based on the fluid-solid coupling similarity theory. Through testing and analysis, the influence of red clay content and gravel substrate on the mechanical and hydraulic properties of the materials is revealed.
Article
Construction & Building Technology
Yongmin Yang et al.
Summary: In recent years, there has been significant development in marine engineering construction in China. This study focused on the development of low-shrinkage modified geopolymer (MGP) concrete and its potential applications in construction. The study evaluated the performance and effects of MGP concrete in the construction of the Xigang seawall in Guangdong Province, China. The results showed that MGP concrete had lower shrinkage, temperature rise, and risk of cracking compared to conventional geopolymer and portland cement concrete, making it suitable for rapid seawall construction.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Junbo Sun et al.
Summary: This study proposes methods for activating waste glass powder and combines experimental results, machine learning prediction, and multi-objective optimization design to provide a comprehensive basis for the practical application of activated waste glass powder concrete.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Junbo Sun et al.
Summary: Waste glass can be effectively utilized in construction by chemical activation and mechanical grinding. The optimal dosage of chemical activators and the combined activation method were determined. A multi-objective optimization model based on the firefly algorithm and machine learning was used to optimize the strength, alkali-silica reaction expansion, and cost of waste glass mixtures. The Pareto fronts for mortars containing different sizes of waste glass powder were successfully obtained, contributing to the practical application of waste glass in mortar production.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Genbao Zhang et al.
Summary: This study investigated the influence factors of glass fiber-reinforced polymer (GFRP) rebar reinforced cemented soil, revealing that mechanical properties positively responded to cement proportion and curing period, while negatively correlated to water content. Machine learning models were utilized for prediction and a multi-objective optimization approach was successfully implemented.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Civil
Yunchao Tang et al.
Summary: This study compares the performance differences between recycled aggregate concrete-filled steel tube columns (RACSTCs) and ordinary concrete-filled steel tube contrast columns (OCSTC) through low cycle reciprocating load tests. A vision measurement system was developed to track the full field deformations of specimens, and the results show that RACSTCs have good seismic and deformation performance. The proposed method of using vision measurement system can accurately measure the deformations of RACSTCs.
Review
Construction & Building Technology
Zhuojun Hu et al.
Summary: This paper discusses the importance of concrete in extraterrestrial construction, introduces the preparation methods and properties of different types of concrete, and mentions further research directions.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Geological
Yi Shan et al.
Summary: Microbially induced calcium carbonate precipitation (MICP) is a new, environmentally friendly treatment method for soil foundations, which can improve the resistance of calcareous sand foundations to liquefaction. This study investigated the effects of variable activated carbon contents on the liquefaction resistance of MICP-treated calcareous sand. The results showed that increasing activated carbon content improved the bacterial retention ratio, cyclic strength, and secant modulus of the samples, and the distribution of excessive activated carbon affected the connection between sand particles.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Runhong Zhang et al.
Summary: This study used the NGI-ADP soil model for finite element analysis to evaluate the effects of soft clay anisotropy on diaphragm wall deflections in braced excavation. Ensemble learning methods were employed to develop surrogate models for predicting wall deformation, which were compared with conventional soft computing methods. The research highlights the cutting-edge application of ensemble learning in geotechnical engineering and provides engineers with a fast, alternative way to determine wall deflection.
GEOSCIENCE FRONTIERS
(2021)
Article
Engineering, Civil
Hua Huang et al.
Summary: The study found that using high-performance ferrocement laminate and bond steel plate to reinforce pre-damaged reinforced concrete columns can effectively restore and improve their bearing capacity, ductility, energy dissipation, and stiffness. This strengthening method also significantly improves the shear capacity of the columns and changes the failure modes. Under different loading conditions, vertical eccentricity has minimal impact on seismic behavior, while horizontal eccentricity increases the length of the failure region and reduces seismic performance.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Yongtao Bai et al.
Summary: Fatigue resistance is crucial for the life-cycle sustainability of materials and structures, yet predicting the fatigue resistance of structural members subjected to flexural forces remains a challenge. Developing a general lumped damage simulation model can offer a new perspective for quantifying fatigue-induced remaining life for engineering structures across elastic and plastic amplitudes.
COMPUTERS & STRUCTURES
(2021)
Article
Engineering, Mechanical
Huailei Cheng et al.
Summary: The study found that the fatigue lives of compacted asphalt mixture samples under the single-axle wave are significantly higher than those under the haversine wave, while the tandem-axle wave results in the lowest fatigue life. Dissipated energy plays an important role in determining fatigue life and shows a unique relationship with the sample's fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Green & Sustainable Science & Technology
Yunchao Tang et al.
Summary: The research indicates that the impact of rubber particles on the unstable fracture toughness is greater than that on the initial cracking toughness of RAC after exposure to high temperatures. However, the enhanced effect of rubber on the fracture resistance decreases after subjecting it to high-temperature treatment due to the softening and eventual decomposition of rubber. Therefore, a rubber content of more than 4% is not recommended to avoid drawbacks introduced by rubber, considering the mechanical and fracture performance of RRAC.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Civil
Jiangang Wei et al.
Summary: This study investigates the compressive behavior of circular steel tube-confined reinforced ultra high-performance concrete columns through experiments. The addition of steel fibers significantly improves the strength and ductility of the columns. A new formula for predicting the bearing capacity of STCRU columns is provided, overcoming limitations of existing specifications.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Environmental
Junfei Zhang et al.
Summary: A multi-objective optimization model for optimizing the mixture proportions of silica fume concrete using machine learning techniques and a meta-heuristic algorithm is developed in this study. The proposed MOBAS algorithm shows superior computational efficiency and accuracy in predicting concrete strength, achieving a high correlation coefficient. The model successfully obtains the Pareto front of optimal silica fume concrete mixture proportions, improving efficiency in mixture optimization and facilitating appropriate decision making before construction.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Construction & Building Technology
Junbo Sun et al.
Summary: Land disposal of waste glass leads to environmental contamination, and recycling it as supplementary cementitious material in concrete is a sustainable solution. Different activation approaches were studied to mitigate alkali-silica reaction (ASR) in concrete with waste glass, with combined activation showing optimal improvement in mechanical properties. Hydrothermal activation reduced ASR expansion effectively, while chemical treatment could induce excessive expansion even at low WGP content.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
J. J. Xu et al.
Summary: This paper presents a Bayesian model updating approach for evaluating and updating existing deterministic models for the mechanical properties of recycled aggregate concrete (RAC), improving the accuracy and applicability of prediction performances. Using Bayesian parameter estimation technique, the important parameters in the updating process are assessed and the selected deterministic models for RAC mechanical performances are accordingly updated.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Jian Xu et al.
Summary: Engineering construction in loess areas often requires improvement of loess. Basalt fiber-reinforced soil exhibits improvement in shear strength of loess, but the effect varies in an inverted U-shaped pattern with fiber length and content; digital image technology can be used to analyze surface damage characteristics and strain fields.
KSCE JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Engineering, Marine
Hussein Ghanim Hasan et al.
Summary: This paper presents novel results on the bond-slip behavior of concrete filled double skin steel tubular (CFDST) columns through push-out tests, focusing on the impact of welded reinforcing bars and shear studs. The findings show that welding reinforcing bars or internal rings onto the inner steel tube significantly enhances bond strength, compressive strength, and eliminates local buckling of the inner tube in CFDST columns. Additionally, the use of embedded shear studs improves bond strength with less shear resistance compared to other interface types.
Article
Chemistry, Multidisciplinary
Tang Yunchao et al.
Summary: The combination of silica fume and nano-silica as additives improves the performance of recycled aggregate concrete in both early and later stages. These additives exhibit good pozzolanic activity, enhancing the secondary hydration reaction with calcium hydroxide to improve the properties of the interface transition zone.
NANOTECHNOLOGY REVIEWS
(2021)
Article
Construction & Building Technology
Fei Yin et al.
JOURNAL OF STRUCTURAL ENGINEERING
(2020)
Article
Engineering, Civil
Hong-Song Hu et al.
ENGINEERING STRUCTURES
(2020)
Article
Construction & Building Technology
Hua Huang et al.
JOURNAL OF STRUCTURAL ENGINEERING
(2020)
Article
Construction & Building Technology
Yu-Hang Wang et al.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2020)
Article
Engineering, Civil
J. J. Xu et al.
THIN-WALLED STRUCTURES
(2019)
Article
Computer Science, Artificial Intelligence
Changzhi Wu et al.
ADVANCED ENGINEERING INFORMATICS
(2019)
Article
Engineering, Geological
Yuantian Sun et al.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2019)
Article
Construction & Building Technology
Yun-Chao Tang et al.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2018)
Article
Materials Science, Multidisciplinary
Wengui Li et al.
MATERIALS & DESIGN
(2017)
Article
Construction & Building Technology
Yun-Chao Tang et al.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2017)
Review
Construction & Building Technology
Zongping Chen et al.
CONSTRUCTION AND BUILDING MATERIALS
(2016)
Article
Multidisciplinary Sciences
Merve Acikgenc et al.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2015)
Article
Construction & Building Technology
Zu-Yan Shen et al.
ADVANCES IN STRUCTURAL ENGINEERING
(2013)
Article
Computer Science, Information Systems
Paulo Cortez et al.
INFORMATION SCIENCES
(2013)