Developments in the Built Environment最新文献

{"title":"Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures","authors":"Rami Hawileh,&nbsp;Hind Alharmoodi,&nbsp;Abdallah Hajjaj,&nbsp;Abdulaziz Aljarwan,&nbsp;Sumit Sahoo,&nbsp;Jamal Abdalla","doi":"10.1016/j.dibe.2025.100654","DOIUrl":"10.1016/j.dibe.2025.100654","url":null,"abstract":"<div><div>Lightweight concrete has proven effective material due to its high strength-to-weight ratio, cost-effectiveness, improved sound insulation, and fire resistance. However, there is scarce data on the confinement behaviour of the lightweight concrete (LWC) exposed to elevated temperatures, particularly when wrapped with fiber-reinforced polymers (FRP). This study explores the behaviour of LWC strengthened and repaired with carbon FRP (CFRP) laminates tested under elevated temperatures. LWC specimens wrapped with CFRP laminates are tested experimentally under temperatures varying from 20 °C to 800 °C. Parameters like compressive strength, stress-strain behaviour, elastic modulus, and failure modes are evaluated as a function of increasing temperature. Analytical models are developed to estimate the degradation on compressive strength and elastic modulus with temperature and validated against experimental data. The outcomes from this study support the use of CFRP wraps to partially restore the strength and elasticity in LWC compression members at moderate temperatures, enhancing its resilience in fire-prone applications.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100654"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hygro-Thermal and Acoustic performances of recycled textile-based materials for building applications","authors":"Alessandro Dama ,&nbsp;Shiva Khoshtinat ,&nbsp;Andrea Alongi ,&nbsp;Claudia Marano ,&nbsp;Adriana Angelotti","doi":"10.1016/j.dibe.2025.100657","DOIUrl":"10.1016/j.dibe.2025.100657","url":null,"abstract":"<div><div>This study presents an experimental investigation of the heat transfer and acoustic properties of semi-finished panels obtained from post-consumer textile waste. Their different compositions (mostly polyester, mostly cotton, and mixed fabric) and different densities, in a range from 50 to 150 kg/m³, were considered. The transient “hot disk” method was used for thermal conductivity and diffusivity measurements and a Kundt's tube for sound absorption. Moreover, hygroscopic characterizations of moisture absorption and its kinetics were carried out. Overall, good thermal insulation (thermal conductivity between 0.042 and 0.062 W/K/m) and medium acoustic performances (sound absorption classes C and D) were observed, suitable for building applications. Thermal conductivity was found to linearly increase with the density and to increase with the relative humidity, in line with the analysed hygroscopic behaviour of the porous matrix. On average, the polyester-based panels showed the lowest thermal conductivity, followed by the mixed fabric.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100657"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of using high strength low alloy steel on reducing the embodied energy, carbon, and water impacts of building structures: A case study","authors":"Manish Kumar Dixit ,&nbsp;Pranav Pradeep Kumar ,&nbsp;Sarbajit Banerjee","doi":"10.1016/j.dibe.2025.100671","DOIUrl":"10.1016/j.dibe.2025.100671","url":null,"abstract":"<div><div>Buildings consume embodied energy (EE) and embodied water (EW) during construction due to the use of materials like steel, adding embodied carbon (EC) to the atmosphere. Using high strength low alloy (HSLA) steel can save steel requirements; however, this potential of HSLA steel to decrease steel use has not been evaluated thoroughly. Using a cradle-to-site system boundary, this paper applies input-output-based hybrid (IOH) modeling to measure savings in steel and EE, EC, and EW use due to using HSLA steel in a reinforced concrete and steel structure. The IOH model integrates macro-economic input-output data with structural analysis to quantify these savings in embodied impacts. Results show that HSLA steel decreases the requirements of steel sections and rebar by 2.5 %–7 % and 6 %–40 %, respectively. These savings generate 2 %–6 % decrease in EE and EC for steel sections and 6 %–18 % for rebar, reducing EW by 2 %–6 % and 5 %–18 % for steel sections and rebar, respectively.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100671"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computing green remodeling construction cost for public buildings based on genetic algorithm and case-based reasoning","authors":"Sojin Park ,&nbsp;Soyeon Park ,&nbsp;Hanbyeol Jang ,&nbsp;Yonghan Ahn ,&nbsp;Nahyun Kwon","doi":"10.1016/j.dibe.2025.100655","DOIUrl":"10.1016/j.dibe.2025.100655","url":null,"abstract":"<div><div>As a first step in considering the budget limitations caused by public funds, a systematic method for estimating the green remodeling construction costs during the planning stage must be established first. In this research, we developed models to predict the construction costs of green remodeling by applying case-based reasoning and genetic algorithm. The applicability of the models was experimentally evaluated, wherein 15 datasets were randomly selected to validate the estimated preliminary construction costs. The average similarities of the retrieved cases were higher than 97 %. The overall performances of the models were evaluated, and the mean absolute error rates for 1-, 3-, 5-, and 10-nearest neighbors were 10.38 %, 7.15 %, 6.91 %, and 9.45 %, respectively. This research contributes to literature of building retrofit cost management in construction by not only offering the systematic approach for estimating the preliminary construction cost, but also providing as foundational data when deriving budgeting strategies.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100655"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semantic mapping-based comparison of digital building LogBook and energy performance certificate models - envisaging data reuse","authors":"Sara karami ,&nbsp;José-Paulo de Almeida ,&nbsp;Claire Ellul ,&nbsp;Alberto Cardoso","doi":"10.1016/j.dibe.2025.100674","DOIUrl":"10.1016/j.dibe.2025.100674","url":null,"abstract":"<div><div>Building information is essential for making informed decisions about overall energy efficiency, performance, and sustainability over the lifecycle of a building. Energy Performance Certificate (EPC) and Digital Building LogBook (DBL) are the two main approaches to capture and manage building data effectively across the life cycle of buildings. While various initiatives proposed different LogBook data models, there are still drawbacks, such as heterogeneity and consensus about elements and categories (group of elements), lack of identifying the key DBL elements, lack of effectively incorporating the main elements of EPC, and providing data dictionaries. The main contribution of this ongoing research is to compare the current DBL and EPC data models through a semi-automatic and knowledge-based approach. As a result, a list of matched and unmatched elements per category was created. The comparison list provided information on the available and common elements, most representative categories and elements, and correlation between models. It also helps to include additional relevant information without causing disagreements. This paper aims to contribute to a step forward in creating a harmonized LogBook data model that may help the reuse of existing data, and hence reduction of data carbon footprint, to move forward to achieve Net-zero objectives.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100674"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructural changes in carbonation-cured slag-blended calcium sulfoaluminate cements under electrically accelerated leaching","authors":"Jin-Ho Bae ,&nbsp;Daeik Jang ,&nbsp;Naru Kim ,&nbsp;Jihoon Park ,&nbsp;Sungsik Choi ,&nbsp;Seonhyeok Kim ,&nbsp;Joonho Seo","doi":"10.1016/j.dibe.2025.100664","DOIUrl":"10.1016/j.dibe.2025.100664","url":null,"abstract":"<div><div>Microstructural changes in carbonation-cured slag-blended calcium sulfoaluminate (CSA) cements under electrically accelerated leaching were investigated in this study. The CSA cement was replaced with slag at mass levels of 0, 30, and 50 %. The paste samples underwent normal or carbonation curing for 28 d and were subsequently exposed to electrically accelerated leaching. The test results of the samples before and after the accelerated leaching test indicated significant decomposition of ettringite in the normally cured samples upon leaching, whereas the formation of ettringite was suppressed in the carbonation-cured samples. However, leaching caused a slight growth of ettringite in the carbonation-cured samples. The reactivities of belite and slag in the carbonation-cured samples increased significantly upon leaching, leading to an increase in C-(A)-S-H and strätlingite contents. Carbonation curing reduced the number of leached ions, and this reduction was more notable with the incorporation of slag.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100664"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying barriers and enablers for emerging value chains in open-loop mineral wool waste recycling within the construction sector","authors":"Anastasija Komkova ,&nbsp;Sophie Krog Agergaard ,&nbsp;Birgitte Holt Andersen ,&nbsp;Guillaume Habert","doi":"10.1016/j.dibe.2025.100662","DOIUrl":"10.1016/j.dibe.2025.100662","url":null,"abstract":"<div><div>Global objectives to mitigate climate change, minimise waste, and ensure the efficient use of resources require urgent actions in multiple sectors, including construction and buildings. Currently, rock wool and glass wool are widely used as insulation materials in the building stock across Europe, while in multiple countries are still landfilled at their end-of-life. Within a recent research project, mineral wool waste has proved to be recyclable as a precursor in an alternative binder to carbon-intensive conventional cement, such as alkali-activated materials (AAMs). This open-loop recycling of mineral wool in AAMs is associated with the creation of new value chains within the circular economy that can trigger symbiotic relationships between urban areas and industries. Stakeholders who produce mineral wool waste–based alkali-activated construction materials at a pilot scale in 5 European countries were interviewed to evaluate their environmental, economic and social performance using selected circular economy indicators. Strengths, weaknesses, opportunities, and threats (SWOT) analysis was applied to identify common trends across pilot-scale productions and potential industrial up-scales. While common barriers include limited economic viability at the pilot scale, which can be addressed through industrial upscaling with optimised supply chains, there is also variability in consumer acceptance of waste-based materials across countries. Finally, potential solutions to the identified barriers along each step of the value chain are proposed. The results show that combined actions of industry, cities, and policymakers are required to overcome barriers and nudge the transition towards a circular economy. This can be achieved by using economic incentives to enhance the cost-competitiveness of alternative construction materials, promoting green public procurement, and raising public awareness.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100662"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering and sustainability performance of geopolymer concrete blended with sodium silicate effluent","authors":"Balamurali Kanagaraj ,&nbsp;R. Samuvel Raj ,&nbsp;N. Anand ,&nbsp;Eva Lubloy","doi":"10.1016/j.dibe.2025.100678","DOIUrl":"10.1016/j.dibe.2025.100678","url":null,"abstract":"<div><div>Geopolymer concrete (GPC), is found to be one of the suitable alternatives, which reduces the carbon emission due to utilization industrial by-products. Due to over use of conventional filler materials, there exists a demand. Therefore, conventional coarse aggregate was substituted with sodium silicate effluent (SSE). The SSE was employed in the range from 0 % to 50 %; to examine the engineering performance of GPC. Increasing the dose of SSE decreases the slump from 75 mm to 60 mm for the concrete with 50 % SSE, and also decreases the strength from 36 MPa (concrete with 0 % SSE) to 17 MPa (concrete with 50 % SSE). The GPC samples with and without SSE were immersed in acid and salt solutions; the acid used in the present study was sulfuric acid (H₂SO₄) and nitric acid (HNO₃). The salts employed for the study were magnesium sulfate (MgSO₄) and sodium chloride (NaCl). Approximately, 43 % of the original concrete (0 % SSE) strength was degraded after 360-d of H₂SO₄ immersion, whereas 50 % SSE shows a loss of 71 %. For HNO₃ immersion, the loss was found to be 40.8 % for 0 % SSE mix and 55 % for 50 % SSE mix. 35 % and 42 % loss in strength was observed for the concrete with 0 % and 50 % SSE after exposed to MgSO₄ solution, and 25–35 % loss was seen for the mix with and without SSE.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100678"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Life cycle assessment of construction and demolition waste upcycling: A critical review of studies from 2010 to 2025","authors":"Ying Chen,&nbsp;Yifu Ou,&nbsp;M. Shadi Mohamed,&nbsp;Zhikang Bao","doi":"10.1016/j.dibe.2025.100685","DOIUrl":"10.1016/j.dibe.2025.100685","url":null,"abstract":"<div><div>Upcycling construction and demolition waste (CDW) not only enhances material performance and functional value, but also offers environmental co-benefits, thereby promoting a circular economy within the construction industry. Life Cycle Assessment (LCA) has gained widespread recognition as an effective tool for evaluating the environmental impacts of CDW upcycling. Although the body of research in this area has expanded in recent years, a systematic understanding of how LCA is applied across different upcycling practices remains limited. To address this gap, this paper aims to examine how LCA has been used to evaluate the environmental impacts of CDW upcycling. A systematic literature review was conducted, covering 46 studies published between 2010 and 2025, identified through searches in Scopus and the Web of Science Core Collection. The review reveals that recycled concrete waste materials are the primary focus of upcycling research. Among the three main upcycling methods, physical processing is the most commonly used due to its fundamental role in material transformation. A significant proportion of upcycled CDW materials is applied in structural applications, particularly as load-bearing components in buildings and infrastructure. Since upcycling technologies are still in the developmental stage, existing studies mainly focus on the environmental benefits from resource extraction to production, with particular emphasis on the impacts of CDW upcycling on air pollution and climate change. Accordingly, this study develops a Structural Framework for Upcycling and a Technical Framework for LCA, aiming to systematically integrate LCA research for CDW upcycling. Future research should concentrate on three key areas: (1) establishing a comprehensive LCA framework, (2) optimizing the sustainability of upcycling processes, and (3) improving the accuracy of LCA calculations. This study provides a valuable roadmap for researchers and practitioners to enhance LCA applications in CDW upcycling, thereby accelerating the transition toward a circular economy in the construction sector.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100685"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achieving ultra-ductility exceeding 13 % and cost efficiency with rubberized alkali-activated slag-based cement-free composites","authors":"Quang-Hiếu Lương ,&nbsp;Huy Hoàng Nguyễn ,&nbsp;Phương Hoàng Nguyễn ,&nbsp;Se-Eon Park ,&nbsp;Youngsang Kim ,&nbsp;Bang Yeon Lee","doi":"10.1016/j.dibe.2025.100677","DOIUrl":"10.1016/j.dibe.2025.100677","url":null,"abstract":"<div><div>This study introduces novel ultra-ductile rubberized alkali-activated slag composites (UD-RSCs) reinforced by normal polyethylene (NPE) and selvage PE-based (SPE) fibers. Five mixtures with different sand-to-binder <em>(s/b)</em> and water-to-binder <em>(w/b)</em> ratios, as well as fiber reinforcements were designed. Then density, compressive strength, and tensile properties of UD-RSCs were measured. Mineralogy analysis was also performed to determine typical morphologies and chemical compositions of UD-RSCs. The PE fiber-reinforced UD-RSC with a sand-to-binder ratio of 0.8 showed a tensile strain capacity of up to 15.6 %, higher than the minimum extensibility of rebar. SPE fiber-reinforced UD-RSC also showed a tensile strain capacity of 13.4 %. Based on a comprehensive comparison, SPE-UD-RSC exhibited improved sustainability while maintaining high mechanical performance compared to PE-UD-RSCs and other ductile composites reinforced by recycled fibers. Through mineralogy analyses, robust fiber bridging behavior was elucidated and C-A-S-H gels were confirmed as the dominant hydration product of UD-RSCs.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"22 ","pages":"Article 100677"},"PeriodicalIF":6.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}