Article
Construction & Building Technology
Qiang Wang, Xiaowei Wang, Rongrong Li
Summary: Urbanization strengthens the positive correlation between economic growth and environmental quality, with economic growth having a greater impact on ecological footprint. Trade openness and natural resource rents increase environmental pressure, while population aging and renewable energy help improve environmental quality.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Construction & Building Technology
Yingxia Li, Shibin Ma, Guang Chen, Shuai Wang
Summary: This study investigates the effects of waste foundry sand (WFS) on the performance of cement-stabilised macadam (CSM). The results show that the addition of WFS reduces the mixture properties, but can be improved with increasing curing age and cement dosage. The optimum cement dosage is 4%, and the optimum WFS replacement level for natural fine aggregate is 15%.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2023)
Article
Construction & Building Technology
Rongrong Li, Lejia Li, Qiang Wang
Summary: Emissions from the transport sector contribute significantly to China's carbon emissions. This study examines the carbon emissions from the transportation industry in 30 Chinese provinces from 2005 to 2019 and finds that energy efficiency and urbanization have a limited inhibitory effect on carbon emissions compared to the promoting effect of income growth, private vehicles, and cargo turnover. Considering the nonlinear effects of carbon emissions is crucial for developing more effective policies to curb emissions in the transport sector.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Construction & Building Technology
Wei Jiang, Dongdong Yuan, Jinhuan Shan, Wanli Ye, Hehe Lu, Aimin Sha
Summary: The study found that in Porous ultra-thin asphalt overlay (PUAO), as the air voids increased, the high-temperature rutting dynamic stability decreased, the tensile strength ratio first decreased and then increased, and the acoustic absorption coefficient gradually increased, but the peak frequency value shifted. The PUAO/AC-13 double-layer specimens showed better performance in dynamic stability and low-temperature bending strength compared to the PUAO single-layer specimens, but had a smaller permeability coefficient. The International Friction Index results showed that PUAO material had excellent skid resistance performance.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Mohamed Amin, Abdullah M. Zeyad, Bassam A. Tayeh, Ibrahim Saad Agwa
Summary: This study introduces a new material, ferrosilicon slag, as a partial substitute for cement in ultra high-performance concrete (UHPC), with microparticles having a surface area of 12,850 (cm2/gm). Results show that increasing the replacement rates of ferrosilicon slag and silica fume by up to 25% can significantly enhance the compressive strength and transport properties of UHPC. This material also has an impact on the fresh concrete properties and mechanical properties of UHPC.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Construction & Building Technology
Shaker M. A. Qaidi, Bassam A. Tayeh, Haytham F. Isleem, Afonso R. G. de Azevedo, Hemn Unis Ahmed, Wael Emad
Summary: This paper provides a systematic review of the use of waste red mud and slag for the production of red mud-slag geopolymer. It discusses the economic and environmental impacts, physical and chemical properties, and potential applications of red mud. The study also presents recent advancements in the usage of red mud and slag for geopolymer production.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Ayaz Ahmad, Waqas Ahmad, Fahid Aslam, Panuwat Joyklad
Summary: This study utilized machine learning algorithms to predict the compressive strength of fly ash-based geopolymer concrete, with the bagging model showing superior performance in result prediction. Sensitivity analysis was conducted to determine the contribution of each parameter towards result prediction.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Review
Construction & Building Technology
Cheng Fang, Wei Wang, Canxing Qiu, Shuling Hu, Gregory A. MacRae, Matthew R. Eatherton
Summary: This paper summarizes recent technological advances in seismic resilient steel structures, covering aspects such as smart materials, novel members, and innovative design of structural systems. It also describes the challenges and areas for further development in incorporating these new design philosophies.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Review
Construction & Building Technology
Shanaka Kristombu Baduge, Sadeep Thilakarathna, Jude Shalitha Perera, Mehrdad Arashpour, Pejman Sharafi, Bertrand Teodosio, Amkit Shringi, Priyan Mendis
Summary: This article provides a state-of-the-art review of the applications of AI, ML, and DL in the building and construction industry, covering areas such as architectural design, material design, structural design, offsite manufacturing, construction management, smart operation, and circular economy. It also discusses data collection strategies, challenges in model development, and future trends in these domains.
AUTOMATION IN CONSTRUCTION
(2022)
Review
Construction & Building Technology
Bassam Tayeh, Abdullah A. Zeyad, Wael M. Emad, Shaker M. A. Qaidi, Afonso R. G. de Azevedo, Hemn Unis Ahmed
Summary: This article discusses recent advances in the production of mine tailings-based geopolymers composites (MT-GPC) as a potentially sustainable construction material, which transforms waste into value and reduces environmental hazards.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Lei Wang, Guoxin Li, Xiang Li, Fanxing Guo, Shengwen Tang, Xiao Lu, Asad Hanif
Summary: This study systematically investigated the effects of MgO on the shrinkage and crack resistance of face slab concrete. It was found that adding the appropriate amount of MgO can compensate for a certain proportion of shrinkage and improve crack resistance, with the reactive MgO (M60) performing the best and the weak reactive MgO (M300) reducing crack resistance.
CEMENT & CONCRETE COMPOSITES
(2022)
Review
Construction & Building Technology
Mugahed Amran, Roman Fediuk, Hakim S. Abdelgader, G. Murali, Togay Ozbakkaloglu, Y. Huei Lee, Y. Yong Lee
Summary: Alkali-activated materials (AAMs) and steel fibers together have great potential in modern construction due to their superior bond strength and good interaction, leading to improved tensile strength and durability. Additional research is needed to further explore the application possibilities of fiber-reinforced alkali-activated concrete (FR-AAC) in different environmental conditions.
JOURNAL OF BUILDING ENGINEERING
(2022)
Review
Construction & Building Technology
Xiaonan Wang, Wengui Li, Zhiyu Luo, Kejin Wang, Surendra P. Shah
Summary: This paper comprehensively reviews and discusses the characteristics, design and application methods of Phase Change Materials (PCMs) in building construction, as well as their effects on energy consumption and construction reliability. Promising research directions and areas for optimization are proposed, along with the future development and potential applications of PCMs in buildings.
ENERGY AND BUILDINGS
(2022)
Article
Construction & Building Technology
Zhiming Ma, Jiaxin Shen, Changqing Wang, Huixia Wu
Summary: This study proposes an innovative method to crush recycled coarse aggregate into recycled manufactured sand, which can be used to prepare high-quality recycled mortar with high strength and good durability. The recycled manufactured sand has superior properties compared to recycled fine aggregate, and can significantly improve the performance of recycled mortar.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Reza Sarkhani Benemaran, Mahzad Esmaeili-Falak, Akbar Javadi
Summary: Resilient modulus (M-R) is crucial in the evaluation and design of flexible pavement foundations. Traditional experiment-based methods for determining M-R are time-consuming and expensive. In this study, an extreme gradient boosting-based (XGB) model is proposed to predict the resilient modulus of flexible pavement foundations. The model is optimized using various optimization methods and a large database. The results show that the proposed method accurately predicts the M-R of flexible pavement foundations.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Review
Construction & Building Technology
Asam Ahmed, Tianshu Ge, Jinqing Peng, Wei-Cheng Yan, Boon Tuan Tee, Siming You
Summary: Decarbonizing the building sector is crucial for mitigating climate change, and net-zero energy buildings are a promising approach to achieve this by reducing energy consumption and increasing the use of renewable energy. The design of net-zero energy buildings should consider various factors and utilize multi-criteria decision analysis methods.
ENERGY AND BUILDINGS
(2022)
Article
Construction & Building Technology
Lina Gao, Fei Tao, Runrui Liu, Zilong Wang, Hongjun Leng, Tong Zhou
Summary: With the expansion of economic activities in cities, the ecological environment is gradually being destructed, and urban planning plays an important role in solving these issues. This study uses the PLUS model to simulate and evaluate the land use situation of Nanjing in 2025 under different scenarios, finding that the ecological risk levels vary under different scenarios. In densely populated areas with concentrated built-up land, attention should be paid to ecological environment protection and the construction of ecological corridors.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Construction & Building Technology
Razak Olu-Ajayi, Hafiz Alaka, Ismail Sulaimon, Funlade Sunmola, Saheed Ajayi
Summary: This study employs machine learning techniques to predict annual building energy consumption, finding Deep Neural Network as the most efficient predictive model, aiding in energy optimization at the early design phase.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Jiangyu Wu, Hongwen Jing, Yuan Gao, Qingbin Meng, Qian Yin, Yue Du
Summary: This paper investigates the mechanical properties and microstructure of cemented rockfill reinforced by carbon nanotubes (CNTs) and fractal aggregates. The study reveals the strengthening and deterioration mechanisms of CNT dosage on cemented rockfill, as well as the influence of aggregate size distribution.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Minfei Liang, Ze Chang, Zhi Wan, Yidong Gan, Erik Schlangen, Branko Savija
Summary: This study aims to predict the creep behavior of concrete using machine learning techniques, specifically EML models such as RF, XGBoost, and LGBM, with high accuracy achieved through Bayesian Optimization and cross-validation. The SHAP values highlight the significant influence of parameters like time, compressive strength, age, humidity, and temperature on concrete creep compliance, indicating the reasonableness of the EML model predictions.
CEMENT & CONCRETE COMPOSITES
(2022)
