Developments in the Built Environment最新文献

{"title":"Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects","authors":"Marta Urdanpilleta ,&nbsp;Itsaso Leceta ,&nbsp;Alexander Martín-Garín ,&nbsp;José Antonio Millán-García ,&nbsp;Pedro Guerrero ,&nbsp;Koro de la Caba","doi":"10.1016/j.dibe.2025.100608","DOIUrl":"10.1016/j.dibe.2025.100608","url":null,"abstract":"<div><div>In the search for sustainable and environmentally friendly alternatives for building insulation materials, biocomposites of sheep wool embedded in a polymer matrix were prepared by freeze-drying, combining soy protein with 7, 10, 15 and 20 wt % sheep wool. In addition, in order to protect these biocomposites against insects, coffee grounds were incorporated into the formulation. Thermal conductivity characterization revealed values in the order of other natural insulating materials. Additionally, coefficients of absorption at normal incidence, with values up to 0.96, showed a competitive performance of the biocomposites, in the same line of the samples without coffee grounds. Furthermore, the test of resistance against insects, with 2B classification according to ISO 3998, showed a good protection against keratophagous insects, especially against carpet beetle (<em>Anthrenus flavipies</em>). Consequently, biocomposites with an entirely renewable and eco-friendly composition, which valorize biowaste from different sources, were found to be functional as thermal and acoustic insulators towards more sustainable materials in the building sector.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100608"},"PeriodicalIF":6.2,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Addition of silane nanoparticles combined with mechanical activation for efficient reuse of sulfidic tailings for concrete construction","authors":"Alieh Saedi,&nbsp;Ahmad Jamshidi-Zanjani","doi":"10.1016/j.dibe.2025.100606","DOIUrl":"10.1016/j.dibe.2025.100606","url":null,"abstract":"<div><div>This study proposes mechanical activation process to structurally modify the tailings containing high sulfide content. X-ray diffraction analysis indicated that the mechanical activation of the tailings caused a phase transformation in the samples, and the alite phase formed in the control sample transformed to the hatrurite phase in the sample containing 20% activated tailings. The presence of silane nanoparticles enhances the hydration process, forming hydrated calcium silicate gels, resulting in a substantial reduction in porosity. According to the results of the toxicity characteristic leaching procedure, the reduction of heavy metals leaching was observed as a conclusion of the combination of tailings activation and the addition of nano-silane. As a result of the bonding between silane nanoparticles and the hydration products, the sample incorporating 20% and 40% activated tailings demonstrated approximately 30% and 15% higher strength, respectively, compared to the control sample after a curing period of 90 days.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100606"},"PeriodicalIF":6.2,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global and regional estimation and evaluation of suitable roof area for solar and green roof applications","authors":"Diana Ürge-Vorsatz ,&nbsp;Souran Chatterjee ,&nbsp;Luisa F. Cabeza ,&nbsp;Gergely Molnár","doi":"10.1016/j.dibe.2025.100607","DOIUrl":"10.1016/j.dibe.2025.100607","url":null,"abstract":"<div><div>Buildings contribute to 40% of energy consumption and 30% of CO₂ emissions in 2019 globally, therefore it is necessary to exploit different solutions to decrease the corresponding energy demand, including green and cool roofs as well as on-site energy generation. To evaluate the potential of such technologies, one major input data for models and calculations is the available roof area, yet the literature shows a huge knowledge gap in this regard. Therefore, this paper contributes to filling this gap by estimating the roof availability over the period 2022–2060, using the detailed regional projections of the BISE (Building Integrated Solar Energy) model. Our results show that the roof area is likely to increase globally and in most of the analysed regions over the forthcoming decades, driven primarily by newly built tertiary buildings. In European context, the future increase of commercial/public rooftops is projected to be more pronounced for the western countries, although the overall growth is predicted to be slightly offset by shrinking residential rooftops both in the western and eastern regions. This study also demonstrates that despite the shading-related uncertainties of the estimation, the dimension of the available rooftop area could ensure significant potential for energy production and thermal regulation.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100607"},"PeriodicalIF":6.2,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-sintered artificial aggregates made of ternary alkali-activated materials with natural carbonated MSWI fly ash incorporations","authors":"Jing Gong ,&nbsp;Mengmeng Wang ,&nbsp;Guo Yang ,&nbsp;Han Guo ,&nbsp;Jie Yao ,&nbsp;Yaxin Tao ,&nbsp;Jing Zhong ,&nbsp;Yubo Sun","doi":"10.1016/j.dibe.2025.100603","DOIUrl":"10.1016/j.dibe.2025.100603","url":null,"abstract":"<div><div>This study investigates the utilization of municipal solid waste incineration (MSWI) fly ash (MFA) to produce non-sintered artificial aggregates (AAs) through alkali activation. To enhance its suitability, MFA underwent a six-month natural carbonation process to remove leachable salts and stabilize heavy metals, during which significant phase transformations were observed. The AAs were fabricated using ternary alkali-activated materials (AAMs) with varying MFA proportions through spray pelletization. Although higher MFA content reduced the strength of the AAs, this effect was counterbalanced by increasing the silicate modulus in the activators. The resulting AAs demonstrated mechanical strength comparable to or exceeding that of natural granite aggregates and recycled aggregates derived from concrete demolition waste. Furthermore, the study examined the reaction products and microstructural characteristics of the AAs. Leachate analysis confirmed compliance with environmental standards for heavy metal content, highlighting the potential of these AAs as a sustainable alternative aggregate resource for the construction industry.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100603"},"PeriodicalIF":6.2,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-TiO₂-treated recycled aggregate-based photocatalytic mortar: Efficient NOx removal and mathematical modeling across diverse operational scenarios","authors":"Xue-Fei Chen ,&nbsp;Xiu-Cheng Zhang ,&nbsp;Xiangping Xian ,&nbsp;S Thomas Ng","doi":"10.1016/j.dibe.2025.100604","DOIUrl":"10.1016/j.dibe.2025.100604","url":null,"abstract":"<div><div>Nano-TiO₂-treated (NT) recycled concrete aggregates (RA) were successfully integrated into the built environment by producing green photocatalytic mortar. Employing various microstructural characterization techniques, it was revealed that the old mortar layer of the RA possessed a porous surface structure, providing a significant specific surface area conducive to effective NT loading. A stable Ti-O-Si chemical bond was established between the surface of the RA and the NT through a hydroxylation treatment process, ensuring the durability of the green photocatalytic mortar during its manufacture and deployment within the built environment. This innovative mortar demonstrated an exceptional NOx removal efficiency of c.a. 90.75%. A predictive model was developed using the Back Propagation Neural Network, integrating experimental and theoretical data to optimize mortar performance across various scenarios. The findings mark a significant advancement in using RA in construction, contributing to sustainable development in the built environment.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100604"},"PeriodicalIF":6.2,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheology, mechanical properties and microstructure characterization of limestone calcined clay cement (LC3) incorporated sustainable lightweight self-compacting concrete","authors":"Snigdhajit Mukherjee ,&nbsp;Rajesh Kumar ,&nbsp;Monalisa Behera ,&nbsp;Arpit Goyal ,&nbsp;Md Reyazur Rahman","doi":"10.1016/j.dibe.2025.100601","DOIUrl":"10.1016/j.dibe.2025.100601","url":null,"abstract":"<div><div>In recent years, there has been growing interest in the possibility of achieving zero-emission goals using environmentally friendly building materials. Significantly, the concrete industry utilizes numerous alternatives as supplementary cementitious materials (SCMs) for development in construction sector. The integrity of these materials has the potential to alter the rheological properties of fresh concrete with ease of their chemical reactivity over time. The physico-chemical behavior of limestone calcined clay cement (LC³) and lightweight expanded clay aggregate (LECA) provides significant information about the intrinsic material characteristics including rheological attributes, of novel lightweight self-compacting concrete (LWSCC) of a target strength of 25 MPa. Primarily, the ease of flow in concrete is governed by the thixotropy and rheological parameters under dynamic motion. Secondarily, the perfect flow model is essential for determining the change in non-linearity in the mixes, leading to shear thickening. Therefore, the overall rheological behavior was determined through slump flow, L-box, U-box, V funnel, and shear flow curve tests using a coaxial vane rheometer with the help of Reiner-Riwlin (R-R) equations. Herschel-Bulkley (H-B) and Modified Bingham (M − B) equations numerically validates non-linearity with flow index (n) ranging between 1.52 and 1.79 with c<strong>/</strong>μ &gt;0. For optimized LWSCC mix; the dynamic yield stresses varied by 20% owing to hydration acceleration and surface charge of metakaolin with an increase in plastic viscosity by 25% under low shear rate. It was found that the extent of flocculation and particle mitigation governs particle interactions in binders at low shear rates. Moreover, the significant reduction in fresh density by 35% (as compared to control mix) and the measurement of thermal conductivity through transient-state method explain the anisotropic structure effect of silicate layers in the heterogeneous LC³ system. A Microstructure study was employed to understand the contribution of secondary calcium silicate hydrate (C-S-H), chemical interaction of metakaolin, and interfacial transition zone (ITZ) through scanning electron microscopy (SEM). Finally, embodied energy assessment and cost analysis showed reduction in carbon dioxide (CO₂) emission and cost by nearly 16% and 13%, respectively, leading to a step toward global net zero emission with sustainability.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100601"},"PeriodicalIF":6.2,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decision support model for evaluating circular economy strategies in private residential construction","authors":"Hsin-Yi Kung ,&nbsp;Yi-Kai Juan ,&nbsp;Daniel Castro-Lacouture","doi":"10.1016/j.dibe.2025.100602","DOIUrl":"10.1016/j.dibe.2025.100602","url":null,"abstract":"<div><div>The circular economy (CE) presents a promising approach to mitigating resource scarcity and environmental impacts. However, implementing CE in the housing market is challenging due to the lack of tools for effectively evaluating and prioritizing CE strategies. This study utilizes a QFD-TOPSIS approach to develop a practical decision support model for a housing project, facilitating the evaluation of CE building strategies by considering technical difficulties, costs, economic benefits, circularity potential, and market demand. Case study results indicate that prioritizing CE strategies with high circularity potential, low cost, and low technical difficulty is crucial for successful implementation. Sensitivity analyses further demonstrate that increased circularity potential facilitates CE implementation. Furthermore, considerable potential exists for future improvements in market demand and technological advancement. Incorporating these principles into architectural design and construction can yield a healthier and more resource-efficient built environment, thereby realizing the value of CE in the construction industry.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100602"},"PeriodicalIF":6.2,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers","authors":"Ali Mardani ,&nbsp;Hatice Gizem Şahin ,&nbsp;Yahya Kaya ,&nbsp;Naz Mardani ,&nbsp;Joseph J. Assaad ,&nbsp;Hilal El-Hassan","doi":"10.1016/j.dibe.2024.100599","DOIUrl":"10.1016/j.dibe.2024.100599","url":null,"abstract":"<div><div>Recycled fine aggregates (RFA) are often prohibited in new construction applications because of their poor physical properties. This paper assesses the feasibility of incorporating steel fibers, silica fume, and latex polymers to mitigate the drop in mechanical properties and durability of RFA-modified cementitious matrices. Testing was conducted on concrete-equivalent mortars with 80–100 MPa compressive strength and later validated on corresponding concrete mixtures. Results showed that the mechanical strengths, drying shrinkage, abrasion, and freeze/thaw resistance degraded when the natural sand was replaced by 100% RFA. The use of steel fibers or silica fume was efficient in restoring these properties within ±8% of the control mix. Meanwhile, latex polymers were more efficient in enhancing the permeability and bond properties with steel reinforcement within ±5% of the control mix. The optimum percentage of steel fibers determined from the TOPSIS method was 0.5% by volume, while the silica fume and latex optimum percentages were 6% and 2.5% of binder mass, respectively.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100599"},"PeriodicalIF":6.2,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A data-driven approach for spectrum-matched earthquake ground motions with physics-informed neural networks","authors":"Ju-Hyung Kim ,&nbsp;Young Hak Lee ,&nbsp;Jang-Woon Baek ,&nbsp;Dae-Jin Kim","doi":"10.1016/j.dibe.2024.100598","DOIUrl":"10.1016/j.dibe.2024.100598","url":null,"abstract":"<div><div>This study presents a novel data-driven approach for generating spectrum-matched earthquake ground motions using physics-informed neural networks (PINNs). The methodology leverages real recorded earthquake data and employs singular value decomposition for dimensionality reduction, enabling the extraction of eigen motions that capture correlated temporal patterns. By combining PINNs with these eigen motions, spectrum matching is achieved with clear physical interpretability. The generated motions balance conventional linear scaling and spectrum matching, with the degree of matching dependent on the input motions, while retaining the realistic non-stationary features inherent in the input data. The adequacy of the post-matched motions is evaluated through various measures and incremental dynamic analysis to identify any potential biases introduced by the spectral matching process. The findings indicate that, despite some deviations in spectral shape, the overall performance of the spectrum-matched motions remains acceptable, without introducing significant bias.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100598"},"PeriodicalIF":6.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Damage evolution and avalanche characteristics of concrete under salt-freezing action by acoustic emission","authors":"Yunfeng Zhao ,&nbsp;Minghui Chen ,&nbsp;Xiang Jiang ,&nbsp;Xuepeng Cao ,&nbsp;Binbin Qin","doi":"10.1016/j.dibe.2024.100600","DOIUrl":"10.1016/j.dibe.2024.100600","url":null,"abstract":"<div><div>Concrete structures in saline-alkali areas will suffer from salt freezing and cause diseases. In this paper, experiments of concrete deterioration under the coupling action of sulfate attack and freeze-thaw cycles were carried out. The avalanche characteristics of acoustic emission (AE) signals generated during concrete failure were analyzed statistically by avalanche dynamics theory, and compared with traditional AE analysis methods. The results show that with the increase of cycle times, the proportion of shear cracks in the failure process of concrete specimens gradually increases, and the AE <em>b</em>-value increases. the energy distribution exponent, amplitude distribution exponent, and duration distribution exponent of concrete specimens gradually increase, while the correlation exponent between amplitude and absolute energy decreases, and the correlation exponent between duration and amplitude fluctuates within a certain range. The distribution exponent of waiting time shows robustness. Avalanche exponents can be applied to the quantitative characterization of concrete damage under the salt-freezing action.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100600"},"PeriodicalIF":6.2,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}