Article
Construction & Building Technology
Marie-Lise Pannier, Patrick Schalbart, Bruno Peuportier
Summary: Building LCA aims to guide designers towards sustainable projects by considering uncertainties in the environmental modelling. This study compares seven statistical metrics for sensitivity and uncertainty analyses, allowing for the identification of reliable indicators. A new SA method is used to determine which uncertain factors influence decisions, and more precise data is collected on these factors. The Heijungs significance metric and distribution of relative differences were found to be the most appropriate for assessing uncertainty analysis results. This methodology enhances decisions by considering uncertainties and selecting the best alternative based on environmental performance.
BUILDING AND ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
A. Abulibdeh, R. N. Jawarneh, T. Al-Awadhi, M. M. Abdullah, R. Abulibdeh, A. M. El Kenawy
Summary: This study evaluated the carbon footprint emissions of different types of urban buildings in Doha City and identified the major contributors to high emissions. Residential villas and the commercial sector had the highest electricity consumption, while hotels had the lowest. The study also identified the spatial distribution of carbon footprint hotspots from residential and commercial buildings in different areas of the city.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
W. Pan, Y. Teng
Summary: This study identified 11 variables affecting the results of embodied carbon assessment in buildings and found that after normalization, the average embodied carbon in the manufacturing, transportation, and construction stages significantly decreased. Noteworthy variations in assessment results were observed as a result of changes in modeling approaches, emission factor databases, and building structures.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Construction & Building Technology
Julie Hansted Andersen, Nana Lin Rasmussen, Morten Walbech Ryberg
Summary: The study found that using cross laminated timber (CLT) as the main structural material in buildings performed the best in environmental impacts, with the lowest impact scores in 11 out of 18 affected categories including Global warming. Operational energy use was identified as the main contributor to overall impact, followed closely by impacts from materials.
ENERGY AND BUILDINGS
(2022)
Article
Environmental Studies
John Akana, Bushra Marium Islam, Kartik Patel, Ikjot Saini, Gyan Chhipi-Shrestha, Rajeev Ruparathna
Summary: The heavy reliance on ICT has increased the importance of cyber security. However, the environmental and economic impact of cyber security solutions has been rarely studied. This research investigates the impact of these solutions through a Life Cycle Assessment, comparing their environmental and economic performance. The findings show that Next Generation DataGuard is the most energy-efficient and economically viable solution among the three compared.
ENVIRONMENTAL IMPACT ASSESSMENT REVIEW
(2023)
Article
Construction & Building Technology
Yubing Zhang, Xiaoyan Jiang, Caiyun Cui, Martin Skitmore
Summary: This study presents a method for integrating the life cycle carbon emissions and costs of buildings to assess their carbon emission intensity based on BIM technology. Through a case study, the feasibility of the method is verified, and the conversion of high carbon emission materials is explored. The proposed methodology provides solutions for achieving low carbon emissions and costs throughout the building life cycle.
BUILDING AND ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Xian Xu, Jianzhou You, Yafeng Wang, Yaozhi Luo
Summary: This study conducts a life cycle assessment of the carbon emission of space frame structures, and finds that lower material consumption does not always lead to lower carbon emission, suggesting the need for evaluating the life-cycle carbon emission in the low-carbon design of space frame structures.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
S. Mahdi Hosseinian, Mohammadreza Faghani
Summary: The building industry has traditionally focused on cost and time metrics, but environmental concerns are gaining attention. This paper proposes that selecting appropriate structural parameters and building sites can achieve low carbon footprint buildings.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
M. A. Parvez Mahmud, Shahjadi Hisan Farjana
Summary: The choice of power plants in different nations depends on the availability, abundance, and reliability of resources. Renewable energy generation systems provide a more sustainable solution than fossil fuels, but they also have overall environmental impacts. This paper addresses the environmental effects caused by different types of renewable energy generation systems through life-cycle impact analysis. A comparative study is carried out among wind, photovoltaic, biomass, and hydro power. The key findings reveal the environmental impacts of different technologies and conclude that hydropower plants are more environment-friendly.
Article
Construction & Building Technology
Zhuocheng Duan, Qiong Huang, Qiming Sun, Qi Zhang
Summary: This study examines the life cycle greenhouse gas emissions (LCGHGE) and life cycle primary energy (LCPE) of three high-rise residential buildings in cold regions of China. The results show that cross laminated timber (CLT) buildings and hybrid CLT buildings have lower LCGHGE compared to conventional reinforced concrete (RC) buildings. Additionally, the operational phase of RC buildings has lower energy consumption and greenhouse gas emissions compared to CLT alternatives. CLT demonstrates great recycling potential and biomass residues during the end-of-life stage.
JOURNAL OF BUILDING ENGINEERING
(2022)
Review
Construction & Building Technology
Haibo Feng, Jianfeng Zhao, Haonan Zhang, Shiyao Zhu, Dezhi Li, Niraj Thurairajah
Summary: This paper systematically reviews existing publications on whole-building life cycle assessment (WBLCA), discusses its status and challenges, and presents a framework that helps LCA practitioners understand the correlation between WBLCA uncertainties and solutions.
JOURNAL OF BUILDING ENGINEERING
(2022)
Review
Chemistry, Multidisciplinary
Boyang Li, Yiqun Pan, Linxue Li, Mingshu Kong
Summary: Life cycle building carbon assessment plays an important role in promoting carbon emission reduction. The main difficulties in the assessment process lie in boundary selection and inventory collection, especially in the early stages of design and construction, as well as calculations involving disposal and refurbishment. Making full use of design documents, standard documents, and related software is significant. This study focuses on the assessment of carbon emissions in the life cycle of building refurbishment, using a zero-carbon pavilion refurbishment project as a case study. The findings show that the refurbishment of existing buildings can significantly reduce carbon dioxide emissions during the construction phase, and the application of a photovoltaic system can save energy consumption and carbon emissions during the operational phase.
APPLIED SCIENCES-BASEL
(2022)
Article
Construction & Building Technology
Bojana Petrovic, Ola Eriksson, Xingxing Zhang
Summary: The aim of this study was to investigate the impact of building design changes, differentiation of biogenic carbon from fossil carbon, and inclusion of external benefits on the carbon accounting of a wooden single-family house. Life cycle assessment (LCA) was used to analyze the greenhouse gas emissions of different building design scenarios, while life cycle cost (LCC) was used to assess the costs. The results showed that an improved building design with positive and negative emissions considered in scenario 4 had the lowest embodied GHG emissions.
BUILDING AND ENVIRONMENT
(2023)
Article
Engineering, Civil
Menghan Zhao, You Dong, Hongyuan Guo
Summary: This paper presents a comparative life-cycle assessment and life-cycle cost analysis of three composite columns, showing that CFFT and DSTC are more economic and environmentally-friendly alternatives compared to CFST.
ENGINEERING STRUCTURES
(2021)
Article
Environmental Sciences
Lu Zhang, Jorge Ruiz-Menjivar, Qingmeng Tong, Junbiao Zhang, Meng Yue
Summary: This study quantified greenhouse gas emissions from rice production-consumption in Hubei province using Life Cycle Assessment. Results showed that the growth stage of rice production was the main source of emissions, providing insight for future policies and targeted initiatives in agricultural carbon emissions reduction in China.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Construction & Building Technology
Kaihua Liu, Chaoying Zou, Xiaocun Zhang, Jiachuan Yan
Summary: This study used three soft computing methods to investigate the frost durability of recycled aggregate concrete, and the results showed that the models could accurately predict the durability factor values, with the artificial neural network model showing the highest prediction accuracy.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Mechanics
Zihua Zhang, Chunheng Zhou, Albert Saputra, Zhenjun Yang, Chongmin Song
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Materials Science, Multidisciplinary
Zihua Zhang, Jialong Guo, Zhenwen Zhang, Xiaogang Song
Summary: A novel method named improved random walking algorithm (IRWA) is proposed to explicitly build the mesostructure of concrete, allowing users to conveniently control parameters and achieve high volume fraction of aggregate with remarkable efficiency. The approach demonstrates good mesh independence and performance in simulating progressive damage of concrete at mesoscale through four benchmarks.
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2021)
Article
Construction & Building Technology
Chi Chiu Lam, Xuan Wang, Zihua Zhang, Yaohong Zhu
Summary: The study found that using recycled glass sand and partially replacing cement with lime in TRM systems leads to a decrease in mortar strength, with the maximum reduction being 73.4%. Additionally, the tensile behavior of steel-TRM with different mix proportions was experimentally studied, showing good agreement with the three-phase tensile behavior. Analytical and numerical models were developed to understand the stress-strain responses and crack patterns of different TRM samples in tension.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Xiaocun Zhang, Xueqi Zhang
Summary: This study evaluated the emissions and costs of rural residential construction in China, finding that block masonry structures have the lowest carbon emissions and costs. By proposing contribution indicators and conducting uncertainty analysis, the research results indicate that the comparisons and findings are reliable at current technical levels.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Xiaocun Zhang, Jie Xu, Xueqi Zhang, Yushun Li
Summary: This study compared the life cycle emissions of a steel-bamboo composite frame structure and a general concrete frame structure, finding that the former is more carbon-friendly. The production phase is a significant contributor to emissions, highlighting the importance of emission reduction in structural design.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Mechanics
Jianghuai Li, Zihua Zhang, Zhenwen Zhang
Summary: This paper presents new shell elements for the analysis of functionally graded plates and shells with varying material properties through the thickness. The shell element is treated as a three-dimensional linear elastic body and its middle surface is represented with a quadrilateral spectral element. The shell geometry is described by scaling the middle surface and the displacements are approximated using quadratic Lagrange shape functions. The developed shell elements eliminate various locking phenomena and require only the shell mid surface to be discretized. The formulation is validated through benchmark examples and gravity load problems.
COMPOSITE STRUCTURES
(2022)
Article
Computer Science, Interdisciplinary Applications
Jianghuai Li, Zihua Zhang, Lei Liu
Summary: This paper introduces new variable-order shell elements that only require the discretization of the shell mid-surface, utilize the assumed natural strain method to eliminate locking effects, and demonstrate superior performance in terms of applicability, accuracy, and efficiency.
COMPUTERS & STRUCTURES
(2022)
Article
Construction & Building Technology
Xiaocun Zhang, Xueqi Zhang
Summary: The study utilized a multi-objective genetic algorithm for sustainable design of reinforced concrete members and compared solutions for singly and doubly reinforced concrete beams. Results showed that an additional cost of 5-6% can result in a emission reduction of up to 14.7%. Detailed parametric analyses were conducted to explore the main factors influencing sustainable beam design.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Engineering, Civil
Zhen-wen Zhang, Zi-hua Zhang, Xuan Wang, Chun-heng Zhou
Summary: This study conducted dynamic and static single-lap shear tests on 144 CFRP-concrete specimens subjected to freeze-thaw cycles. The interfacial bonding properties were analyzed based on various parameters, and the study found that the resistance to freeze-thaw cycles of concrete was the most important factor affecting the static and dynamic properties of the CFRP-concrete interface. The freeze-thaw cycle caused embrittlement of the interface and decreased its dynamic energy absorbing ability.
Article
Construction & Building Technology
Chunheng Zhou, Jinjing Pan, Zihua Zhang, Yaohong Zhu
Summary: This study aimed to investigate the residual tensile performances of GFRP bars under and after high temperature exposure. The mechanical properties, degradation mechanisms, and stress-strain relationships of GFRP bar specimens were tested and compared. The results showed that the residual tensile strengths and ultimate strains of GFRP bars after high temperatures were greater than those under high temperatures, indicating the importance of considering these different values in the analysis of fire resistance and post-fire identification of structures reinforced with GFRP bars.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Marine
Xiaoqian Wang, Zihua Zhang, Ping Zhuge
Summary: This study proposes a new anti-typhoon full submersible platform that combines the advantages of carbon-fiber-reinforced polymer tendons and various types of floating wind turbine foundations, showing promising potential and competitiveness in offshore wind structures.
Article
Construction & Building Technology
Chunheng Zhou, Jiazhang Cao, Zihua Zhang, Yaohong Zhu
Summary: The increasing construction activities on islands have led to the promising use of FRP reinforced coral aggregate concrete (CAC). To improve the bond properties between CAC and GFRP bars, fibers were added as reinforcement in CAC. Pull-out tests were conducted to study the effect of fiber reinforcement on the bond behavior between CAC and GFRP bars, while the mechanical properties of fiber reinforced coral aggregate concrete (FRCAC) were also investigated. The results showed that adding fibers as reinforcement can inhibit crack development in FRCAC, change the failure mode of bonding specimens, and improve the mechanical and bond properties of CAC. Among the fiber types, basalt fiber and copper-surfaced steel fiber demonstrated a more significant reinforcing effect on bond properties.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)