首页 > 最新文献

Proceedings of the Institution of Civil Engineers-Engineering Sustainability最新文献

英文 中文
Thermal conductivity of an external wall with simulated smart Aerogel insulation system 采用模拟智能气凝胶隔热系统的外墙的导热性能
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-04-27 DOI: 10.1680/jensu.23.00064
Kaveh Iravani
Modern technologies are more than ever adopting intelligent designs that respond to environmental variants to produce more desirable outcomes. In the building and housing industries, intelligent designs aim to conserve energy through temperature controls and energy storage and distribution systems. In this context, an intelligent Aerogel insulation system is modelled and studied for the exterior building walls. Aerogel with a thermal conductivity of about 0.012 W/m-K has a superior insulating property, and an intelligent design built around it would introduce additional energy storage and delivery enhancements to the system. In this study, a test room and a control room in an open urban environment were built, and the intended intelligence, first considered by choosing Aerogel that has the potential to be engineered with smart properties according to researchers in composite material science, and second was considered by automation which was applied manually to the test room. The calculated thermal conductivity of an external wall with intelligent Aerogel insulation is -(1.83 ± 0.06) × 10−1 W/m. The negative sign is an attribute of a system function rather than of a material. The external wall with intelligent Aerogel insulation, in comparison to an identical non-insulated wall, exhibited 2.7 times better energy conservation.
现代技术比以往任何时候都更多地采用智能设计,以应对环境变化,产生更理想的结果。在建筑和住房行业,智能设计旨在通过温度控制、能源储存和分配系统来节约能源。在此背景下,我们对建筑外墙的智能气凝胶隔热系统进行了建模和研究。气凝胶的导热系数约为 0.012 W/m-K,具有优异的隔热性能,围绕气凝胶的智能设计将为系统带来额外的能量储存和输送功能。在这项研究中,我们在一个开放的城市环境中建造了一个测试室和一个控制室,为了实现智能化,我们首先根据复合材料科学研究人员的研究,选择了具有智能特性工程潜力的气凝胶,其次考虑了在测试室中手动应用的自动化。经计算,使用智能气凝胶隔热材料的外墙导热系数为-(1.83 ± 0.06) × 10-1 W/m。负号是系统功能而非材料的属性。采用智能气凝胶隔热材料的外墙与相同的非隔热外墙相比,节能效果提高了 2.7 倍。
{"title":"Thermal conductivity of an external wall with simulated smart Aerogel insulation system","authors":"Kaveh Iravani","doi":"10.1680/jensu.23.00064","DOIUrl":"https://doi.org/10.1680/jensu.23.00064","url":null,"abstract":"Modern technologies are more than ever adopting intelligent designs that respond to environmental variants to produce more desirable outcomes. In the building and housing industries, intelligent designs aim to conserve energy through temperature controls and energy storage and distribution systems. In this context, an intelligent Aerogel insulation system is modelled and studied for the exterior building walls. Aerogel with a thermal conductivity of about 0.012 W/m-K has a superior insulating property, and an intelligent design built around it would introduce additional energy storage and delivery enhancements to the system. In this study, a test room and a control room in an open urban environment were built, and the intended intelligence, first considered by choosing Aerogel that has the potential to be engineered with smart properties according to researchers in composite material science, and second was considered by automation which was applied manually to the test room. The calculated thermal conductivity of an external wall with intelligent Aerogel insulation is -(1.83 ± 0.06) × 10<sup>−1</sup> W/m. The negative sign is an attribute of a system function rather than of a material. The external wall with intelligent Aerogel insulation, in comparison to an identical non-insulated wall, exhibited 2.7 times better energy conservation.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"4 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801837","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}
引用次数: 0
Life cycle based considerations in design of driven piles in sand 基于生命周期的砂土打桩设计考虑因素
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-04-20 DOI: 10.1680/jensu.23.00099
Dora L de Melo, Jason T DeJong, Alissa Kendall, Barry M Lehane
This study conducts a life cycle assessment to evaluate the environmental impacts of driven shafts across twelve different siliceous sand sites, selected from a database of static load pile tests. Through parametric studies, this paper investigates the influence of soil properties, pile geometry, and on-site activities on environmental impacts. For a single pile, findings demonstrate that material production is the most impactful phase, contributing 88.4% of global warming potential (GWP) per unit capacity, while on-site operations contribute minimally at 1%. Sensitivity analyses show that variations in fuel consumption by ± 25% and linear interpolations of blow counts result in negligible difference in GWP (less than 0.1% and 1%, respectively). On average, the total GWP for steel and concrete piles is approximately 4.3 and 0.92 kg CO2e per kN capacity, respectively. Although various factors influence pile design and installation, the results presented herein provide a foundational framework for geotechnical engineers to integrate environmental impacts into project planning, design, and construction considerations.
本研究进行了一项生命周期评估,以评价打入式竖井在 12 个不同的硅质砂地点对环境的影响,这些地点是从静载荷桩测试数据库中挑选出来的。通过参数研究,本文探讨了土壤特性、桩的几何形状和现场活动对环境影响的影响。对于单根桩而言,研究结果表明,材料生产是影响最大的阶段,占单位容量全球升温潜能值(GWP)的 88.4%,而现场作业影响最小,仅占 1%。敏感性分析表明,燃料消耗量 ± 25% 的变化和打击次数的线性插值导致的全球升温潜能值差异可以忽略不计(分别小于 0.1% 和 1%)。平均而言,钢桩和混凝土桩的总全球升温潜能值分别约为每千牛桩容量 4.3 千克二氧化碳当量和 0.92 千克二氧化碳当量。尽管影响桩基设计和安装的因素多种多样,但本文介绍的结果为岩土工程师将环境影响纳入项目规划、设计和施工考虑提供了一个基础框架。
{"title":"Life cycle based considerations in design of driven piles in sand","authors":"Dora L de Melo, Jason T DeJong, Alissa Kendall, Barry M Lehane","doi":"10.1680/jensu.23.00099","DOIUrl":"https://doi.org/10.1680/jensu.23.00099","url":null,"abstract":"This study conducts a life cycle assessment to evaluate the environmental impacts of driven shafts across twelve different siliceous sand sites, selected from a database of static load pile tests. Through parametric studies, this paper investigates the influence of soil properties, pile geometry, and on-site activities on environmental impacts. For a single pile, findings demonstrate that material production is the most impactful phase, contributing 88.4% of global warming potential (GWP) per unit capacity, while on-site operations contribute minimally at 1%. Sensitivity analyses show that variations in fuel consumption by ± 25% and linear interpolations of blow counts result in negligible difference in GWP (less than 0.1% and 1%, respectively). On average, the total GWP for steel and concrete piles is approximately 4.3 and 0.92 kg CO<sub>2</sub>e per kN capacity, respectively. Although various factors influence pile design and installation, the results presented herein provide a foundational framework for geotechnical engineers to integrate environmental impacts into project planning, design, and construction considerations.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"3 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140629988","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}
引用次数: 0
Establishing preference ranking for town water supply in remote areas: case study in Taiwan 偏远地区城镇供水偏好排序:台湾案例研究
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-04-18 DOI: 10.1680/jensu.23.00033
Jieh-Haur Chen, Andina Mugi Utami, Jui-Pin Wang, Chien-Ming Huang, Lian Shen
This study aims to develop a Preference Ranking Model (PRM) using the Analytic Hierarchy Process (AHP) for expanding tap water utilities. The literature review identifies six aspects and fifteen factors influencing the prioritization and decisions regarding the extension of tap water pipelines. A pilot study involving eight officials yielded a Consistency Index (CI) of 0.070, which is below the threshold of 0.1, supporting the feasibility of the AHP questionnaire. The formal AHP questionnaire, targeting 30 officials with over six years of work experience, resulted in a CI of 0.062 and a CR of 0.050, both meeting the criteria of being less than 0.1. The established priority ranking places emphasis on: (1) Aspects - water source > construction period > population > residential type > political matter > constructability; and (2) factor preference rankings within each aspect. The outcome undergoes evaluation based on 26 empirical cases to determine its potential approval by the central government. Apart from the costly construction in the top three cases, the acceptance rate sees an approximately 60% increase compared to previous rates. These findings promise to enhance operational efficiency, saving both time and manpower in practical applications.
本研究旨在利用层次分析法(AHP)为自来水设施扩建开发一个偏好排序模型(PRM)。文献综述确定了影响自来水管道扩建优先次序和决策的六个方面和十五个因素。由八名官员参与的试点研究得出的一致性指数(CI)为 0.070,低于 0.1 的临界值,证明了 AHP 问卷的可行性。正式的 AHP 问卷调查针对的是 30 名有六年以上工作经验的官员,其结果是 CI 为 0.062,CR 为 0.050,均符合小于 0.1 的标准。所确定的优先排序侧重于(1) 各个方面--水源、施工期、人口、住宅类型、政治因素、可施工性;(2) 各个方面中的因素优先排序。根据 26 个经验案例对结果进行评估,以确定中央政府是否可能批准。除了前三个案例的建设成本较高外,验收率比以前提高了约 60%。这些发现有望在实际应用中提高运营效率,节省时间和人力。
{"title":"Establishing preference ranking for town water supply in remote areas: case study in Taiwan","authors":"Jieh-Haur Chen, Andina Mugi Utami, Jui-Pin Wang, Chien-Ming Huang, Lian Shen","doi":"10.1680/jensu.23.00033","DOIUrl":"https://doi.org/10.1680/jensu.23.00033","url":null,"abstract":"This study aims to develop a Preference Ranking Model (PRM) using the Analytic Hierarchy Process (AHP) for expanding tap water utilities. The literature review identifies six aspects and fifteen factors influencing the prioritization and decisions regarding the extension of tap water pipelines. A pilot study involving eight officials yielded a Consistency Index (CI) of 0.070, which is below the threshold of 0.1, supporting the feasibility of the AHP questionnaire. The formal AHP questionnaire, targeting 30 officials with over six years of work experience, resulted in a CI of 0.062 and a CR of 0.050, both meeting the criteria of being less than 0.1. The established priority ranking places emphasis on: (1) Aspects - water source &gt; construction period &gt; population &gt; residential type &gt; political matter &gt; constructability; and (2) factor preference rankings within each aspect. The outcome undergoes evaluation based on 26 empirical cases to determine its potential approval by the central government. Apart from the costly construction in the top three cases, the acceptance rate sees an approximately 60% increase compared to previous rates. These findings promise to enhance operational efficiency, saving both time and manpower in practical applications.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"47 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140623582","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}
引用次数: 0
Performance evaluation of prefabricated retaining wall systems based on centrifuge tests 基于离心试验的预制挡土墙系统性能评估
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-02-14 DOI: 10.1680/jensu.23.00072
Honglue Qu, Wangwang Dong, Zhaolong Li, Gopal Santana Phani Madabhushi
Prefabricated and assembled retaining wall systems are gradually becoming the choice for slope stabilisation and earth-retaining structures. However, current prefabricated retaining wall systems are often difficult to apply in complex and variable construction sites due to issues such as inconsistent production dimensions and transportation difficulties. This paper presents a novel prefabricated retaining wall system and reports centrifuge model tests performed to analyse its overall performance. The influence of different infill materials on the performance of the prefabricated retaining wall system was studied. The research findings reveal that the retaining wall system provides significant slope stabilisation effects and can withstand up to four times the stress level of a natural slope. Moreover, the stability of the retaining wall system is more than twice better when infilled with frictional soil compared with that when clay infill is used. Due to its unique structure, it can not only reduce material consumption and carbon dioxide emissions by around 63.94% but also allow planting of green plants in the gaps of components, thereby providing a more sustainable alternative to conventional concrete gravity wall systems.
预制和装配式挡土墙系统正逐渐成为边坡加固和土方保持结构的首选。然而,由于生产尺寸不一致和运输困难等问题,目前的预制挡土墙系统往往难以应用于复杂多变的施工现场。本文介绍了一种新型预制挡土墙系统,并报告了为分析其整体性能而进行的离心机模型试验。研究了不同填充材料对预制挡土墙系统性能的影响。研究结果表明,挡土墙系统具有显著的斜坡稳定效果,可承受高达天然斜坡四倍的应力水平。此外,与使用粘土填充物相比,用摩擦土填充挡土墙系统的稳定性要好两倍以上。由于其独特的结构,它不仅能减少约 63.94% 的材料消耗和二氧化碳排放,还能在构件间隙种植绿色植物,从而为传统的混凝土重力墙系统提供了一个更具可持续性的替代方案。
{"title":"Performance evaluation of prefabricated retaining wall systems based on centrifuge tests","authors":"Honglue Qu, Wangwang Dong, Zhaolong Li, Gopal Santana Phani Madabhushi","doi":"10.1680/jensu.23.00072","DOIUrl":"https://doi.org/10.1680/jensu.23.00072","url":null,"abstract":"Prefabricated and assembled retaining wall systems are gradually becoming the choice for slope stabilisation and earth-retaining structures. However, current prefabricated retaining wall systems are often difficult to apply in complex and variable construction sites due to issues such as inconsistent production dimensions and transportation difficulties. This paper presents a novel prefabricated retaining wall system and reports centrifuge model tests performed to analyse its overall performance. The influence of different infill materials on the performance of the prefabricated retaining wall system was studied. The research findings reveal that the retaining wall system provides significant slope stabilisation effects and can withstand up to four times the stress level of a natural slope. Moreover, the stability of the retaining wall system is more than twice better when infilled with frictional soil compared with that when clay infill is used. Due to its unique structure, it can not only reduce material consumption and carbon dioxide emissions by around 63.94% but also allow planting of green plants in the gaps of components, thereby providing a more sustainable alternative to conventional concrete gravity wall systems.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"23 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199890","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}
引用次数: 0
Urban microclimate analysis: residential block morphology impact on outdoor thermal comfort 城市微气候分析:住宅区形态对室外热舒适度的影响
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-02-07 DOI: 10.1680/jensu.22.00042
Golbarg Sadeghian, Mansoureh Tahbaz, Pantea Hakimian
In many cities, protracted exposure of urban structures to excessive solar radiation and the urban heat island (UHI) phenomenon may cause thermal discomfort for pedestrians in outdoor spaces, particularly in hot-arid regions. This study investigated the impact of urban residential block morphology on microclimate in Isfahan, Iran, using ENVI-met numerical models. The predicted mean vote (PMV) model for residential outdoor spaces was calculated using simulation data for the hottest day of the summer to assess outdoor thermal comfort. Comparison of the alternatives – namely, diagonal blocks, compact linear blocks, continuous curved blocks and dispersed cubic blocks – showed that the microclimate performance of the diagonal type was better than those of the other design options, as the PMV index represented the minimum distance from the ideal thermal comfort range due to a lower sky view factor (SVF) and optimal orientation. The curved blocks performed better in urban open spaces, promoting airflow and reducing UHI, than linear and cubic blocks. The results showed that the PMV index could predict thermal comfort in various urban design patterns and could be affected by the morphology of urban blocks. Variations in building morphology alter the SVF and microclimate parameters, which have an impact on outdoor thermal comfort.
在许多城市,城市结构长期暴露在过量的太阳辐射和城市热岛(UHI)现象下,可能会给室外空间的行人带来热不适,尤其是在炎热干旱地区。本研究利用 ENVI-met 数值模型研究了伊朗伊斯法罕城市住宅区形态对微气候的影响。利用夏季最热一天的模拟数据计算了住宅室外空间的预测平均投票(PMV)模型,以评估室外热舒适度。对对角线砌块、紧凑线性砌块、连续曲线砌块和分散立方体砌块等备选方案进行比较后发现,对角线砌块的微气候性能优于其他设计方案,因为 PMV 指数代表了由于较低的天空视线系数(SVF)和最佳朝向而与理想热舒适范围之间的最小距离。与直线型和立方型砌块相比,弧形砌块在城市开放空间中的表现更好,可以促进空气流通,减少 UHI。结果表明,PMV 指数可以预测各种城市设计模式下的热舒适度,并可能受到城市街区形态的影响。建筑形态的变化会改变 SVF 和微气候参数,从而对室外热舒适度产生影响。
{"title":"Urban microclimate analysis: residential block morphology impact on outdoor thermal comfort","authors":"Golbarg Sadeghian, Mansoureh Tahbaz, Pantea Hakimian","doi":"10.1680/jensu.22.00042","DOIUrl":"https://doi.org/10.1680/jensu.22.00042","url":null,"abstract":"In many cities, protracted exposure of urban structures to excessive solar radiation and the urban heat island (UHI) phenomenon may cause thermal discomfort for pedestrians in outdoor spaces, particularly in hot-arid regions. This study investigated the impact of urban residential block morphology on microclimate in Isfahan, Iran, using ENVI-met numerical models. The predicted mean vote (PMV) model for residential outdoor spaces was calculated using simulation data for the hottest day of the summer to assess outdoor thermal comfort. Comparison of the alternatives – namely, diagonal blocks, compact linear blocks, continuous curved blocks and dispersed cubic blocks – showed that the microclimate performance of the diagonal type was better than those of the other design options, as the PMV index represented the minimum distance from the ideal thermal comfort range due to a lower sky view factor (SVF) and optimal orientation. The curved blocks performed better in urban open spaces, promoting airflow and reducing UHI, than linear and cubic blocks. The results showed that the PMV index could predict thermal comfort in various urban design patterns and could be affected by the morphology of urban blocks. Variations in building morphology alter the SVF and microclimate parameters, which have an impact on outdoor thermal comfort.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"143 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316421","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}
引用次数: 0
Analysis of floating photovoltaic systems on hydro reservoirs 水电站浮动光伏系统分析
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-01-29 DOI: 10.1680/jensu.23.00047
G Mamatha, P S Kulkarni
Floating solar photovoltaic (FSPV) systems offer a more sustainable energy option than ground-mounted ones by avoiding land use and enabling decentralised power generation. This paper presents a conceptual hybrid design for an actual hydropower plant and a simulated FSPV plant, considering relevant factors. Five significant reservoir dams in India were chosen to test the proposed design, and as a novelty, the cooling effect was considered. In general, the cooling impact is dependent on the kind of supporting structure. Metrics such as generation, carbon dioxide (CO2) reductions, water savings and extra hydropower were computed in this work by considering two kinds of floating structures. The results indicate that with a total coverage of less than 20%, the hydroelectric reservoirs can double their installed power capacity. In terms of energy gain, the hydroelectric plant generated 92% more energy on average after integrating floating solar power. Furthermore, the capacity factor of the plant grew by an average of 18.43%. The total water savings in this scenario are 134.6 million m3, resulting in an additional 34.97 GWh of annual hydroelectricity generation. The cost–benefit analysis shows that the energy produced by FSPV is the most cost effective, ranging from 2.65 to 3.05 Indian rupees/kWh (US$0.03–0.04/kWh), depending on the FSPV platform.
与地面安装的太阳能光伏发电系统相比,浮动太阳能光伏发电(FSPV)系统可避免占用土地,实现分散式发电,是一种更具可持续性的能源选择。考虑到相关因素,本文介绍了实际水电站和模拟 FSPV 电站的概念性混合设计。本文选择了印度五座重要的水库大坝来测试所提出的设计,作为一项创新,还考虑了冷却效应。一般来说,冷却效果取决于支撑结构的类型。在这项工作中,通过考虑两种浮动结构,计算了发电量、二氧化碳(CO2)减排量、节水量和额外水力发电量等指标。结果表明,在总覆盖率小于 20% 的情况下,水力发电站水库的装机容量可增加一倍。在能量增益方面,水电站在整合浮动太阳能发电后,平均多发电 92%。此外,水电站的容量因子平均提高了 18.43%。该方案的节水总量为 1.346 亿立方米,年水力发电量增加 34.97 千兆瓦时。成本效益分析表明,快热式可再生能源发电站生产的能源最具成本效益,根据快热式可再生能源发电站平台的不同,成本效益在 2.65 至 3.05 印度卢比/千瓦时(0.03-0.04 美元/千瓦时)之间。
{"title":"Analysis of floating photovoltaic systems on hydro reservoirs","authors":"G Mamatha, P S Kulkarni","doi":"10.1680/jensu.23.00047","DOIUrl":"https://doi.org/10.1680/jensu.23.00047","url":null,"abstract":"Floating solar photovoltaic (FSPV) systems offer a more sustainable energy option than ground-mounted ones by avoiding land use and enabling decentralised power generation. This paper presents a conceptual hybrid design for an actual hydropower plant and a simulated FSPV plant, considering relevant factors. Five significant reservoir dams in India were chosen to test the proposed design, and as a novelty, the cooling effect was considered. In general, the cooling impact is dependent on the kind of supporting structure. Metrics such as generation, carbon dioxide (CO<sub>2</sub>) reductions, water savings and extra hydropower were computed in this work by considering two kinds of floating structures. The results indicate that with a total coverage of less than 20%, the hydroelectric reservoirs can double their installed power capacity. In terms of energy gain, the hydroelectric plant generated 92% more energy on average after integrating floating solar power. Furthermore, the capacity factor of the plant grew by an average of 18.43%. The total water savings in this scenario are 134.6 million m<sup>3</sup>, resulting in an additional 34.97 GWh of annual hydroelectricity generation. The cost–benefit analysis shows that the energy produced by FSPV is the most cost effective, ranging from 2.65 to 3.05 Indian rupees/kWh (US$0.03–0.04/kWh), depending on the FSPV platform.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"2015 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199907","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}
引用次数: 0
Implementing responsible sourcing in the architecture, engineering and construction sector 在建筑、工程和施工领域实施负责任的采购
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2023-12-19 DOI: 10.1680/jensu.23.00042
Sophie Ball, Colin A Booth, Abdul-Majeed Mahamadu, Jacqueline Glass
The last decade has witnessed an urgency to adopt integrated and sustainable practices within construction manufacturing processes. With this in mind, this study examines individuals’ experiences of the sector’s uptake of BES 6001 to determine themes and propose methods for improving the process driving towards a sustainable future. Using a phenomenological methodology and a strategy for purposive sampling of architecture, engineering and construction industry professionals involved in the certification of products under the BES 6001 framework, semi-structured interviews (n = 6) were used to collect ‘lived-experience’ data. The key benefits of implementation include (a) management belief; (b) BES 6001 providing automated, transparent and accountable reporting; and (c) BES 6001 providing assurance to stakeholders. Meanwhile, the key barriers include (a) the complexity and cost of administration of the assessment; (b) access for small and medium-sized enterprises/small supply chain members being challenging; and (c) the perception of value. Based on the findings, the following recommendations are proposed: (a) there should be consultation and assessment of planned future revisions of the BES 6001 standard; (b) there should be analysis of evidence production for BES 6001 accreditation, with a view to provide in-depth support to organisations – such as a guidance manual or similar; and (c) a clear and integrated approach to responsible sourcing should be explored, considering multiple third-party accreditations.
在过去的十年中,在建筑生产过程中采用综合的可持续实践已成为当务之急。有鉴于此,本研究对该行业采用 BES 6001 的个人经验进行了调查,以确定主题并提出改进方法,从而推动可持续发展的未来。本研究采用现象学方法,对参与 BES 6001 框架下产品认证的建筑、工程和施工行业专业人士进行有目的的抽样调查,并通过半结构化访谈(n = 6)收集 "生活经验 "数据。实施的主要益处包括:(a) 管理信念;(b) BES 6001 提供自动化、透明和负责任的报告;以及 (c) BES 6001 为利益相关者提供保证。与此同时,主要障碍包括:(a) 评估的复杂性和管理成本;(b) 中小型企业/小型供应链成员难以获得评估;以及 (c) 价值感。根据调查结果,提出了以下建议:(a) 应对 BES 6001 标准未来的修订计划进行咨询和评估;(b) 应对 BES 6001 认证的证据生产进行分析,以便为组织提供深入支持--如指导手册或类似文件;(c) 应考虑多个第三方认证,探索负责任采购的清晰综合方法。
{"title":"Implementing responsible sourcing in the architecture, engineering and construction sector","authors":"Sophie Ball, Colin A Booth, Abdul-Majeed Mahamadu, Jacqueline Glass","doi":"10.1680/jensu.23.00042","DOIUrl":"https://doi.org/10.1680/jensu.23.00042","url":null,"abstract":"The last decade has witnessed an urgency to adopt integrated and sustainable practices within construction manufacturing processes. With this in mind, this study examines individuals’ experiences of the sector’s uptake of BES 6001 to determine themes and propose methods for improving the process driving towards a sustainable future. Using a phenomenological methodology and a strategy for purposive sampling of architecture, engineering and construction industry professionals involved in the certification of products under the BES 6001 framework, semi-structured interviews (<i>n</i> = 6) were used to collect ‘lived-experience’ data. The key benefits of implementation include (<i>a</i>) management belief; (<i>b</i>) BES 6001 providing automated, transparent and accountable reporting; and (<i>c</i>) BES 6001 providing assurance to stakeholders. Meanwhile, the key barriers include (<i>a</i>) the complexity and cost of administration of the assessment; (<i>b</i>) access for small and medium-sized enterprises/small supply chain members being challenging; and (<i>c</i>) the perception of value. Based on the findings, the following recommendations are proposed: (<i>a</i>) there should be consultation and assessment of planned future revisions of the BES 6001 standard; (<i>b</i>) there should be analysis of evidence production for BES 6001 accreditation, with a view to provide in-depth support to organisations – such as a guidance manual or similar; and (<i>c</i>) a clear and integrated approach to responsible sourcing should be explored, considering multiple third-party accreditations.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"123 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138740960","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}
引用次数: 0
Investigation of the pore structure performance of dune sand mortar with ceramic waste 陶瓷废料沙丘砂砂浆孔隙结构性能研究
IF 1.2 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2023-12-06 DOI: 10.1680/jensu.23.00024
Abderrahmane Ghrieb, Yacine Abadou, Rosa Bustamante, María Isabel Sánchez de Rojas
The use of construction waste in creating concrete and mortar is an important process that not only offers economic benefits but also helps protect the environment by reducing waste in rural and urban areas. This experimental study aims to investigate the effect of adding crushed ceramic waste (CCW) and crushed brick waste (CBW) on the bulk density, workability, compressive and flexural strengths, water absorption and microstructural properties of dune sand mortar. To determine changes in porosity, the study uses the mercury intrusion porosimetry technique to measure porosity and pore size distribution. Scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses are conducted to examine the microstructure and size of the voids using an electron microscope, and photographs of voids in the mortar matrix are taken. By replacing 15% of the sand with CCW and CBW, the compactness and mechanical strength of the dune sand mortar are enhanced, increasing the dynamic modulus of elasticity by around 29 and 26%, respectively. This is due to the pozzolanic activity of these residues, which mainly occur in the form of medium and small capillaries in all the mortars studied, reducing the diameter of the pores.
利用建筑垃圾制造混凝土和砂浆是一个重要的过程,不仅提供经济效益,而且通过减少农村和城市地区的浪费来帮助保护环境。本实验旨在研究陶瓷碎渣(CCW)和砖碎渣(CBW)的加入对沙丘砂砂浆的容重、和易性、抗压和抗折强度、吸水率和微观结构性能的影响。为了确定孔隙度的变化,本研究采用压汞法测量孔隙度和孔径分布。利用扫描电子显微镜和能量色散x射线能谱分析对砂浆基质中的孔洞进行了微观结构和尺寸分析,并拍摄了孔洞的照片。用CCW和CBW替代15%的砂,提高了沙丘砂砂浆的密实度和机械强度,动态弹性模量分别提高了29%和26%左右。这是由于这些残留物的火山灰活性,这些残留物主要以中小毛细血管的形式出现在所有研究的砂浆中,减少了孔隙的直径。
{"title":"Investigation of the pore structure performance of dune sand mortar with ceramic waste","authors":"Abderrahmane Ghrieb, Yacine Abadou, Rosa Bustamante, María Isabel Sánchez de Rojas","doi":"10.1680/jensu.23.00024","DOIUrl":"https://doi.org/10.1680/jensu.23.00024","url":null,"abstract":"The use of construction waste in creating concrete and mortar is an important process that not only offers economic benefits but also helps protect the environment by reducing waste in rural and urban areas. This experimental study aims to investigate the effect of adding crushed ceramic waste (CCW) and crushed brick waste (CBW) on the bulk density, workability, compressive and flexural strengths, water absorption and microstructural properties of dune sand mortar. To determine changes in porosity, the study uses the mercury intrusion porosimetry technique to measure porosity and pore size distribution. Scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses are conducted to examine the microstructure and size of the voids using an electron microscope, and photographs of voids in the mortar matrix are taken. By replacing 15% of the sand with CCW and CBW, the compactness and mechanical strength of the dune sand mortar are enhanced, increasing the dynamic modulus of elasticity by around 29 and 26%, respectively. This is due to the pozzolanic activity of these residues, which mainly occur in the form of medium and small capillaries in all the mortars studied, reducing the diameter of the pores.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"30 3","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524908","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}
引用次数: 0
Improving energy efficiency and thermal comfort of building by natural fibre insulation materials 利用天然纤维保温材料提高建筑的能源效率和热舒适性
4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2023-11-08 DOI: 10.1680/jensu.21.00003
Kadi Yasmina, Ammar Korichi, Chadi Maalouf
As part of the energy transition and global environmental problems, improving the energy efficiency of buildings has become an imperative aspect for the architecture, engineering and construction industries. Furthermore, the energy performance of a building depends directly on the quality of its thermal envelope and the insulation material applied. Therefore, the main aim of this study is to assess by means of simulations the impact of ecological insulation materials on thermal comfort and energy efficiency in the case of a residential building in a Mediterranean climate. The results of the simulation show that optimising envelope design parameters can reduce annual energy loads for heating and for cooling. The most efficient strategies for achieving this reduction involve the use of ecological thermal insulation of external walls, optimising glazing settings and use of efficient shading devices.
作为能源转型和全球环境问题的一部分,提高建筑物的能源效率已成为建筑、工程和建筑行业的一个重要方面。此外,建筑的能源性能直接取决于其隔热层和保温材料的质量。因此,本研究的主要目的是通过模拟来评估生态保温材料对地中海气候下住宅建筑的热舒适和能源效率的影响。仿真结果表明,优化围护结构设计参数可以减少供暖和制冷的年能量负荷。实现这种减少的最有效策略包括使用外墙的生态隔热,优化玻璃设置和使用有效的遮阳设备。
{"title":"Improving energy efficiency and thermal comfort of building by natural fibre insulation materials","authors":"Kadi Yasmina, Ammar Korichi, Chadi Maalouf","doi":"10.1680/jensu.21.00003","DOIUrl":"https://doi.org/10.1680/jensu.21.00003","url":null,"abstract":"As part of the energy transition and global environmental problems, improving the energy efficiency of buildings has become an imperative aspect for the architecture, engineering and construction industries. Furthermore, the energy performance of a building depends directly on the quality of its thermal envelope and the insulation material applied. Therefore, the main aim of this study is to assess by means of simulations the impact of ecological insulation materials on thermal comfort and energy efficiency in the case of a residential building in a Mediterranean climate. The results of the simulation show that optimising envelope design parameters can reduce annual energy loads for heating and for cooling. The most efficient strategies for achieving this reduction involve the use of ecological thermal insulation of external walls, optimising glazing settings and use of efficient shading devices.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":" 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293272","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}
引用次数: 0
A literature review: asphalt pavement repair technologies and materials 文献综述:沥青路面修补技术与材料
4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2023-11-06 DOI: 10.1680/jensu.22.10000
Hui Yao, Yiran Wang, Pengrui Ma, Xin Li, Zhanping You
Asphalt pavement is the most widely used type of pavement in the world and is mainly utilized in the construction of infrastructures such as highways, urban roads, parking lots, and airstrips. The pavement maintenance technology and materials are gradually developing towards systematization and diversification with the extensive use of asphalt pavement. Choosing more economical technologies, and fast and sustainable materials is the future of asphalt pavement maintenance work. This paper provides an overview of asphalt pavement repair technology and asphalt pavement repair materials. We categorize and summarize the pavement repair technologies, which include cost-effective technologies such as crack sealing, overlay, seal coat, and hot-in-place recycling. Further, we summarized the repair materials applied in the repair technologies and compared the performance, cost-effectiveness, and sustainability of each type of material. The study shows that asphalt and cement are the most commonly used repair materials. The more potential, economical, and sustainable materials for asphalt pavement repair include epoxy resin, polyurethane, and hydrogel. The future of asphalt pavement repair requires advancing towards rapid, sustainable, environmentally friendly, and economical. The survey indicates that in addition to improving the performance of existing repair materials (e.g., modified asphalt, binder processes, material composition or ratios), attention can be given to new materials such as polyurethanes and hydrogels that have the potential for rapid repair and at low cost. More research can be done to perfect the application of new materials in road engineering.
沥青路面是世界上使用最广泛的路面类型,主要用于高速公路、城市道路、停车场和飞机跑道等基础设施的建设。随着沥青路面的广泛使用,路面养护技术和养护材料正逐步向系统化、多样化方向发展。选择更经济的技术,快速和可持续的材料是沥青路面养护工作的未来。本文对沥青路面修补技术和沥青路面修补材料进行了综述。我们对路面修复技术进行了分类和总结,其中包括具有成本效益的技术,如裂缝密封、覆盖、密封涂层和就地热回收。在此基础上,我们总结了修复技术中应用的修复材料,并对每种材料的性能、成本效益和可持续性进行了比较。研究表明,沥青和水泥是最常用的修复材料。更有潜力、更经济、更可持续的沥青路面修复材料包括环氧树脂、聚氨酯和水凝胶。未来的沥青路面修复需要朝着快速、可持续、环保、经济的方向发展。调查表明,除了改善现有修复材料的性能(例如,改性沥青、粘合剂工艺、材料成分或比例)外,还可以关注聚氨酯和水凝胶等具有快速修复和低成本潜力的新材料。在完善新材料在道路工程中的应用方面,还有待进一步的研究。
{"title":"A literature review: asphalt pavement repair technologies and materials","authors":"Hui Yao, Yiran Wang, Pengrui Ma, Xin Li, Zhanping You","doi":"10.1680/jensu.22.10000","DOIUrl":"https://doi.org/10.1680/jensu.22.10000","url":null,"abstract":"Asphalt pavement is the most widely used type of pavement in the world and is mainly utilized in the construction of infrastructures such as highways, urban roads, parking lots, and airstrips. The pavement maintenance technology and materials are gradually developing towards systematization and diversification with the extensive use of asphalt pavement. Choosing more economical technologies, and fast and sustainable materials is the future of asphalt pavement maintenance work. This paper provides an overview of asphalt pavement repair technology and asphalt pavement repair materials. We categorize and summarize the pavement repair technologies, which include cost-effective technologies such as crack sealing, overlay, seal coat, and hot-in-place recycling. Further, we summarized the repair materials applied in the repair technologies and compared the performance, cost-effectiveness, and sustainability of each type of material. The study shows that asphalt and cement are the most commonly used repair materials. The more potential, economical, and sustainable materials for asphalt pavement repair include epoxy resin, polyurethane, and hydrogel. The future of asphalt pavement repair requires advancing towards rapid, sustainable, environmentally friendly, and economical. The survey indicates that in addition to improving the performance of existing repair materials (e.g., modified asphalt, binder processes, material composition or ratios), attention can be given to new materials such as polyurethanes and hydrogels that have the potential for rapid repair and at low cost. More research can be done to perfect the application of new materials in road engineering.","PeriodicalId":49671,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Engineering Sustainability","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634570","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}
引用次数: 0
期刊
Proceedings of the Institution of Civil Engineers-Engineering Sustainability
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1