The fresh and durability properties of alkali activated mortar were investigated in this study. Ground granulated blast furnace slag (GGBFS) was used as a binder material. Both carbon fiber (CF) and polypropylene fibers (PP) were added with a ratio of (0, 0.75, 1.0, and 1.25)% to the weight of the binder. Simultaneously, hybrid fiber was also used (CF-1.0 and PP-0.25; CF-0.5, and PP-0.5; CF-0.25 and PP-1.0). The fresh property of the composite was investigated in terms of flow test. Whereas, the durability properties like fire resistance, water sorptivity, water absorption, density, porosity, efflorescence and sulphate attack were also investigated. According to the findings, increasing the fiber content reduces the flowability of the mixture. Simultaneously, the best fiber content studied was 1%, which significantly enhanced durability properties. In addition, both fibers had achieved excellent improvement. Whereas carbon fiber had more influence than polypropylene fiber regarding durability properties.
{"title":"Durability and fire resistance performance of slag based geopolymer composite","authors":"A. O. Mawlod, Dillshad K. H. Bzeni","doi":"10.1680/jensu.22.00009","DOIUrl":"https://doi.org/10.1680/jensu.22.00009","url":null,"abstract":"The fresh and durability properties of alkali activated mortar were investigated in this study. Ground granulated blast furnace slag (GGBFS) was used as a binder material. Both carbon fiber (CF) and polypropylene fibers (PP) were added with a ratio of (0, 0.75, 1.0, and 1.25)% to the weight of the binder. Simultaneously, hybrid fiber was also used (CF-1.0 and PP-0.25; CF-0.5, and PP-0.5; CF-0.25 and PP-1.0). The fresh property of the composite was investigated in terms of flow test. Whereas, the durability properties like fire resistance, water sorptivity, water absorption, density, porosity, efflorescence and sulphate attack were also investigated. According to the findings, increasing the fiber content reduces the flowability of the mixture. Simultaneously, the best fiber content studied was 1%, which significantly enhanced durability properties. In addition, both fibers had achieved excellent improvement. Whereas carbon fiber had more influence than polypropylene fiber regarding durability properties.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"22 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91172057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
How do we engage public and community support for and co-create action on climate and environmental change, resilient water management and sustainable critical infrastructure? The answer to this often-asked question, as expected, is not simple yet also not complicated – just a complex layering of scales and dimensions from engineering, environmental and social sciences, science communication and intergenerational recognition that there is not a ‘one size fits all’ approach – just as with technical infrastructures. With these perspectives in mind, this paper shares best practice on mobilising the co-creation of sustainable water resilient communities in the South West of England. Consideration of evidence and engagement across multiple scales and dimensions is positioned through exploration and evaluation of projects undertaken through the Westcountry Rivers Trust’s Water Resilient Communities programme in two counties (Devon and Somerset). The projects cover town-based Sustainable Drainage Systems (SuDS) co-created with residents; schools-based SuDS co-created with children and teachers; and a Water Resilience Summit and associated Hub co-created with communities and businesses. Over 400 people were directly engaged in exploring, planning and co-creating different aspects, which met intended objectives. Learning points were uncovered and reflected on to take forward into future projects to enable further mobilisation of sustainable water resilient communities.
{"title":"Mobilising sustainable, water resilient communities: evidence and engagement across scales","authors":"S. Ward, N. Paling, A. Rogers","doi":"10.1680/jensu.21.00095","DOIUrl":"https://doi.org/10.1680/jensu.21.00095","url":null,"abstract":"How do we engage public and community support for and co-create action on climate and environmental change, resilient water management and sustainable critical infrastructure? The answer to this often-asked question, as expected, is not simple yet also not complicated – just a complex layering of scales and dimensions from engineering, environmental and social sciences, science communication and intergenerational recognition that there is not a ‘one size fits all’ approach – just as with technical infrastructures. With these perspectives in mind, this paper shares best practice on mobilising the co-creation of sustainable water resilient communities in the South West of England. Consideration of evidence and engagement across multiple scales and dimensions is positioned through exploration and evaluation of projects undertaken through the Westcountry Rivers Trust’s Water Resilient Communities programme in two counties (Devon and Somerset). The projects cover town-based Sustainable Drainage Systems (SuDS) co-created with residents; schools-based SuDS co-created with children and teachers; and a Water Resilience Summit and associated Hub co-created with communities and businesses. Over 400 people were directly engaged in exploring, planning and co-creating different aspects, which met intended objectives. Learning points were uncovered and reflected on to take forward into future projects to enable further mobilisation of sustainable water resilient communities.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"98 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79954272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The growing depletion of natural geomaterials has forced scientists and engineers to look for alternate sustainable backfill materials in large-scale practical applications. The study presents the experimental and numerical investigation on the performance of two sustainable backfills, namely steel slag and construction and demolition waste (CDW) for possible Mechanically Stabilized Earth (MSE) wall backfill application. A detailed characterization followed by the performance evaluation of the materials using extensive laboratory experiments, encompassing the strength and drainage criteria is presented. Results of the triaxial and California Bearing Ratio (CBR) strength tests highlighted the superior performance of the sustainable backfill materials as compared to the traditional backfill material. The adequate drainage capacity of slag and CDW reflected encouraging possibility of utilising the materials as alternate backfills. In addition, the strength enhancement options of sustainable backfills using geogrid reinforcement have been evaluated. Finally, the feasibility of utilising the materials in a prototype MSE wall was investigated with the help of finite element numerical analysis. Hardening Soil model was used to effectively capture the non-linear stress-strain behaviour of these materials. Results obtained from finite element analysis demonstrated multiple benefits of sustainable backfill materials. In comparison to the standard backfill, MSE walls with slag and CDW backfill demonstrated 56% and 70% reductions in horizontal wall displacements, respectively. Moreover, lower reinforcement strains were observed in walls with sustainable backfills.
{"title":"Performance assessment of mechanically stabilised earth walls with sustainable backfills: experimental and numerical approach","authors":"Pushpraj Mandloi, Sanjana Sarkar, A. Hegde","doi":"10.1680/jensu.22.00012","DOIUrl":"https://doi.org/10.1680/jensu.22.00012","url":null,"abstract":"The growing depletion of natural geomaterials has forced scientists and engineers to look for alternate sustainable backfill materials in large-scale practical applications. The study presents the experimental and numerical investigation on the performance of two sustainable backfills, namely steel slag and construction and demolition waste (CDW) for possible Mechanically Stabilized Earth (MSE) wall backfill application. A detailed characterization followed by the performance evaluation of the materials using extensive laboratory experiments, encompassing the strength and drainage criteria is presented. Results of the triaxial and California Bearing Ratio (CBR) strength tests highlighted the superior performance of the sustainable backfill materials as compared to the traditional backfill material. The adequate drainage capacity of slag and CDW reflected encouraging possibility of utilising the materials as alternate backfills. In addition, the strength enhancement options of sustainable backfills using geogrid reinforcement have been evaluated. Finally, the feasibility of utilising the materials in a prototype MSE wall was investigated with the help of finite element numerical analysis. Hardening Soil model was used to effectively capture the non-linear stress-strain behaviour of these materials. Results obtained from finite element analysis demonstrated multiple benefits of sustainable backfill materials. In comparison to the standard backfill, MSE walls with slag and CDW backfill demonstrated 56% and 70% reductions in horizontal wall displacements, respectively. Moreover, lower reinforcement strains were observed in walls with sustainable backfills.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"28 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83627683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Tien, S. Wei, T. Chow, J. Darkwa, Christopher Wood, J. Calautit
Occupant behaviour is one of the key parameters that significantly impact the operation of heating, ventilation, and air-conditioning (HVAC) systems and the energy performance of buildings. The detailed occupancy information can improve HVAC operation and utilisation of building spaces. Strategies such as vision-based occupancy detection and recognition have recently garnered much interest. This study investigates the performance of a vision-based deep learning detection technique for enhancing building system operations and energy performances. The model used was the Faster RCNN with Inception V2. Two occupancy detection model configurations were developed, tested and evaluated. Both models were analysed based on the application of the detector within a selected case study building, along with the evaluation based on the different evaluation metrics. Results suggest that the occupancy detector (Model 1) provided an overall accuracy of 95.23% and an F1 score of 0.9756, while the occupancy activity detector (Model 2) provided an accuracy of 89.37% with an F1 score of 0.8298. Building Energy Simulation (BES) was used to evaluate and compare the impact of such an approach on the indoor occupancy heat gains. The study highlighted the potential of the detection approaches, but further development is necessary, including optimisation of the model, full integration with HVAC controls and further model training and field testing.
{"title":"Enhancing the detection performance of a vision-based occupancy detector for buildings","authors":"P. Tien, S. Wei, T. Chow, J. Darkwa, Christopher Wood, J. Calautit","doi":"10.1680/jensu.22.00013","DOIUrl":"https://doi.org/10.1680/jensu.22.00013","url":null,"abstract":"Occupant behaviour is one of the key parameters that significantly impact the operation of heating, ventilation, and air-conditioning (HVAC) systems and the energy performance of buildings. The detailed occupancy information can improve HVAC operation and utilisation of building spaces. Strategies such as vision-based occupancy detection and recognition have recently garnered much interest. This study investigates the performance of a vision-based deep learning detection technique for enhancing building system operations and energy performances. The model used was the Faster RCNN with Inception V2. Two occupancy detection model configurations were developed, tested and evaluated. Both models were analysed based on the application of the detector within a selected case study building, along with the evaluation based on the different evaluation metrics. Results suggest that the occupancy detector (Model 1) provided an overall accuracy of 95.23% and an F1 score of 0.9756, while the occupancy activity detector (Model 2) provided an accuracy of 89.37% with an F1 score of 0.8298. Building Energy Simulation (BES) was used to evaluate and compare the impact of such an approach on the indoor occupancy heat gains. The study highlighted the potential of the detection approaches, but further development is necessary, including optimisation of the model, full integration with HVAC controls and further model training and field testing.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"124 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73946367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Several countries have introduced, and several kinds of research have discussed the performance of Building Information Modelling (BIM) as an information technology trend. Despite its potential impact on construction performance, this concept has not attracted the attention of many countries like Morocco. COVID-19 broke out when the architecture, engineering, and construction (AEC) industry was suffering from several shortcomings, mainly the poor technology exploitation cited in the literature. Although this has weakened the sector, it is a real opportunity to assimilate and understand the role of technology, especially BIM. In this context, the main objective is to draw to draw conclusions on the role of BIM during and after COVID-19 through the analysis of the AEC industry in Morocco and the benchmarking of BIM contributions during this health crisis. A qualitative approach was conducted, including the analysis of the pre-COVID, during COVID, the post-epidemic phase, and the benchmarking of BIM’s contribution. This study demonstrates the inevitability of adopting critical thinking when it comes to solutions about the evolution of the construction sector and the practical implications for a successful revival of the AEC industry post-COVID-19. It contributes to the body of knowledge on AEC in the face of this universal pandemic. The findings are relevant to all countries where information technology exploitation is absent or weak.
{"title":"Building Information Modelling: a key approach for the recovery of the architecture, engineering construction industry post Covid-19","authors":"Khalil Idrissi Gartoumi, M. Aboussaleh, S. Zaki","doi":"10.1680/jensu.22.00014","DOIUrl":"https://doi.org/10.1680/jensu.22.00014","url":null,"abstract":"Several countries have introduced, and several kinds of research have discussed the performance of Building Information Modelling (BIM) as an information technology trend. Despite its potential impact on construction performance, this concept has not attracted the attention of many countries like Morocco. COVID-19 broke out when the architecture, engineering, and construction (AEC) industry was suffering from several shortcomings, mainly the poor technology exploitation cited in the literature. Although this has weakened the sector, it is a real opportunity to assimilate and understand the role of technology, especially BIM. In this context, the main objective is to draw to draw conclusions on the role of BIM during and after COVID-19 through the analysis of the AEC industry in Morocco and the benchmarking of BIM contributions during this health crisis. A qualitative approach was conducted, including the analysis of the pre-COVID, during COVID, the post-epidemic phase, and the benchmarking of BIM’s contribution. This study demonstrates the inevitability of adopting critical thinking when it comes to solutions about the evolution of the construction sector and the practical implications for a successful revival of the AEC industry post-COVID-19. It contributes to the body of knowledge on AEC in the face of this universal pandemic. The findings are relevant to all countries where information technology exploitation is absent or weak.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"82 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84008467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Núria Biosca Amat, Luis Rojas Bonilla, J. Parkinson
Climate risk and vulnerability assessments were undertaken in the Caribbean for national ministries, with funding from the Caribbean Development Bank. The studies evaluated the impacts of climate-related natural hazards on road transport infrastructure and identified measures to strengthen resilience. Geographic information systems were used to map infrastructure assets and structural condition, and climate-related variables were then integrated to model current and future hazard scenarios. The datasets were analysed to identify hotspot areas of the road network where adaptation interventions were proposed, and to prioritise climate-resilient investments. The assessment findings helped decision makers to understand system resilience, adaptive capacity and how critical risk hotspot areas could be mitigated. Improved road infrastructure design and a more proactive approach to road and structure maintenance will help increase the resilience of the road networks by reducing vulnerability to hazards and minimising the impact of climate change.
{"title":"Using climate risk and vulnerability assessments to prioritise Caribbean road investments","authors":"Núria Biosca Amat, Luis Rojas Bonilla, J. Parkinson","doi":"10.1680/jensu.21.00008","DOIUrl":"https://doi.org/10.1680/jensu.21.00008","url":null,"abstract":"Climate risk and vulnerability assessments were undertaken in the Caribbean for national ministries, with funding from the Caribbean Development Bank. The studies evaluated the impacts of climate-related natural hazards on road transport infrastructure and identified measures to strengthen resilience. Geographic information systems were used to map infrastructure assets and structural condition, and climate-related variables were then integrated to model current and future hazard scenarios. The datasets were analysed to identify hotspot areas of the road network where adaptation interventions were proposed, and to prioritise climate-resilient investments. The assessment findings helped decision makers to understand system resilience, adaptive capacity and how critical risk hotspot areas could be mitigated. Improved road infrastructure design and a more proactive approach to road and structure maintenance will help increase the resilience of the road networks by reducing vulnerability to hazards and minimising the impact of climate change.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"6 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86392203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-01DOI: 10.1680/jensu.2022.175.3.111
W. Pan
{"title":"Editorial: Innovative methodology for measuring and predicting engineering sustainability","authors":"W. Pan","doi":"10.1680/jensu.2022.175.3.111","DOIUrl":"https://doi.org/10.1680/jensu.2022.175.3.111","url":null,"abstract":"","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"10 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82726858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As the push to reduce global carbon emissions intensifies, infrastructure managers are rethinking how maintenance is planned and executed to minimise greenhouse gases without sacrificing the performance of their infrastructure networks. This paper addresses this need. The work includes a detailed description of the estimation of greenhouse gas emissions that arise from common sewer maintenance interventions. These detailed estimates were subsequently used to project emissions from three maintenance scenarios for a large sewer network. The study found that emissions from maintenance mainly originate from materials, and that emissions from transport, traffic congestion, and machinery were of secondary importance. The current practice promises the lowest emissions up to 2035 but does not address the ageing pipe network. As a consequence, the network condition and performance deteriorate further as failures rapidly accumulate. Embracing preventive maintenance coupled with circular economy thinking is shown to be an effective solution to improve the network condition and performance, while at the same time offering savings of 6222 t carbon dioxide a year. These findings provide infrastructure managers with a detailed example of the potential of circular economy thinking in reducing long-term emissions along with insights into the expected trade- offs that arise with network performance and resource utilisation.
{"title":"Estimating greenhouse gas emissions arising from the maintenance of sewer networks","authors":"John R. Hacker, Sean Kerwin, B. Adey","doi":"10.1680/jensu.21.00105","DOIUrl":"https://doi.org/10.1680/jensu.21.00105","url":null,"abstract":"As the push to reduce global carbon emissions intensifies, infrastructure managers are rethinking how maintenance is planned and executed to minimise greenhouse gases without sacrificing the performance of their infrastructure networks. This paper addresses this need. The work includes a detailed description of the estimation of greenhouse gas emissions that arise from common sewer maintenance interventions. These detailed estimates were subsequently used to project emissions from three maintenance scenarios for a large sewer network. The study found that emissions from maintenance mainly originate from materials, and that emissions from transport, traffic congestion, and machinery were of secondary importance. The current practice promises the lowest emissions up to 2035 but does not address the ageing pipe network. As a consequence, the network condition and performance deteriorate further as failures rapidly accumulate. Embracing preventive maintenance coupled with circular economy thinking is shown to be an effective solution to improve the network condition and performance, while at the same time offering savings of 6222 t carbon dioxide a year. These findings provide infrastructure managers with a detailed example of the potential of circular economy thinking in reducing long-term emissions along with insights into the expected trade- offs that arise with network performance and resource utilisation.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"62 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84973569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Covid-19 highlighted shortcomings in the ability of critical infrastructure organisations to manage and operate their systems and assets. While the possibility of a pandemic was not unknown, management protocols fell short of preparing for this ‘tail-risk’ scenario. This paper assesses organisational response to the global pandemic and what this reveals in terms of: (a) attitudes towards risks that do not typically manifest as operational priorities to address and (b) the implications for organisational resilience. Covid-19 impact management strategies developed by critical infrastructure organisations and their potential implications on wider risks and management capabilities are reviewed. The complex and evolving nature of critical infrastructure system management is demonstrated through examples of risk interconnectivity and resource scarcity. For example, the pandemic did not directly impact physical infrastructure, yet cascading issues are revealed that relate to the forced delay of planned asset maintenance and the impacts of supply chain disruptions. This paper demonstrates the need for holistic, multi-hazard management approaches in critical infrastructure organisations to ensure a level of operational resilience that is required for the 21st Century. This paper also views critical infrastructure organisations as sociotechnical entities and highlights how building a resilience-oriented working culture can support effective risk planning and investment decisions.
{"title":"Pandemic response in the energy sector and implications for critical infrastructure resilience management","authors":"Sally O’Brien, Kristen MacAskill","doi":"10.1680/jensu.21.00094","DOIUrl":"https://doi.org/10.1680/jensu.21.00094","url":null,"abstract":"Covid-19 highlighted shortcomings in the ability of critical infrastructure organisations to manage and operate their systems and assets. While the possibility of a pandemic was not unknown, management protocols fell short of preparing for this ‘tail-risk’ scenario. This paper assesses organisational response to the global pandemic and what this reveals in terms of: (a) attitudes towards risks that do not typically manifest as operational priorities to address and (b) the implications for organisational resilience. Covid-19 impact management strategies developed by critical infrastructure organisations and their potential implications on wider risks and management capabilities are reviewed. The complex and evolving nature of critical infrastructure system management is demonstrated through examples of risk interconnectivity and resource scarcity. For example, the pandemic did not directly impact physical infrastructure, yet cascading issues are revealed that relate to the forced delay of planned asset maintenance and the impacts of supply chain disruptions. This paper demonstrates the need for holistic, multi-hazard management approaches in critical infrastructure organisations to ensure a level of operational resilience that is required for the 21st Century. This paper also views critical infrastructure organisations as sociotechnical entities and highlights how building a resilience-oriented working culture can support effective risk planning and investment decisions.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"46 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79734872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the continuous advancement of urbanization, a large amount of construction and demolition waste (CDW) is generated in large-scaled construction activities, which has aggravated the problems of environmental pollution, resources waste and ecological damage. The recycling of CDW can effectively solve such problems, and research on this topic has important practical significance. The paper selects 1090 articles on CDW recycling included in the core database of Web of Science from 2000 to 2021 as samples, and uses two sorts of bibliometric analysis software, VOSviewer and CiteSpace, to obtain the annual publication volume, country, journal, author, institution, keywords, and co-citation visualization atlas, analyzing the hotspots and development trends of CDW recycling research from two dimensions of time and space. The analysis results show that compared with developed countries, the research on CDW recycling and utilization started late, and the phenomenon of focusing on construction and ignoring environmental protection is obvious in China. At present, relevant research mainly focuses on three aspects: the performance of recycled aggregates, the management of CDW recycling and the improvement strategy of CDW recycling. The bibliometric analysis results help scholars in this field to quickly clarify the development trend of CDW recycling, provide research directions for China’s CDW recycling and point out research hotspots, aiming to improve China’s CDW recycling rate and promote sustainable social development.
随着城市化进程的不断推进，大规模建设活动中产生了大量的建筑拆迁垃圾，加剧了环境污染、资源浪费和生态破坏问题。CDW的回收利用可以有效地解决这些问题，研究这一课题具有重要的现实意义。本文选取Web of Science核心数据库2000 - 2021年收录的1090篇关于CDW回收的文章为样本，利用VOSviewer和CiteSpace两种文献计量分析软件，获取年度出版数量、国家、期刊、作者、机构、关键词、共被引可视化图谱，从时间和空间两个维度分析CDW回收研究的热点和发展趋势。分析结果表明，与发达国家相比，中国对CDW回收利用的研究起步较晚，重建设、轻环保的现象明显。目前，相关研究主要集中在再生骨料性能、CDW回收管理和CDW回收改进策略三个方面。文献计量分析结果有助于该领域的学者快速厘清CDW回收的发展趋势，为中国CDW回收提供研究方向，指出研究热点，旨在提高中国CDW回收率，促进社会可持续发展。
{"title":"Bibliometric analysis of construction and demolition waste recycling and utilization: review and prospect","authors":"Zhiguo Shao, Mengdi Li, Dehu Yu","doi":"10.1680/jensu.21.00089","DOIUrl":"https://doi.org/10.1680/jensu.21.00089","url":null,"abstract":"With the continuous advancement of urbanization, a large amount of construction and demolition waste (CDW) is generated in large-scaled construction activities, which has aggravated the problems of environmental pollution, resources waste and ecological damage. The recycling of CDW can effectively solve such problems, and research on this topic has important practical significance. The paper selects 1090 articles on CDW recycling included in the core database of Web of Science from 2000 to 2021 as samples, and uses two sorts of bibliometric analysis software, VOSviewer and CiteSpace, to obtain the annual publication volume, country, journal, author, institution, keywords, and co-citation visualization atlas, analyzing the hotspots and development trends of CDW recycling research from two dimensions of time and space. The analysis results show that compared with developed countries, the research on CDW recycling and utilization started late, and the phenomenon of focusing on construction and ignoring environmental protection is obvious in China. At present, relevant research mainly focuses on three aspects: the performance of recycled aggregates, the management of CDW recycling and the improvement strategy of CDW recycling. The bibliometric analysis results help scholars in this field to quickly clarify the development trend of CDW recycling, provide research directions for China’s CDW recycling and point out research hotspots, aiming to improve China’s CDW recycling rate and promote sustainable social development.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"12 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81835978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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