Developments in the Built Environment最新文献

Shining the dynamics of the Economic Complexity Index on the European Union's climate change strategy: Evidence from the novel approach of MMQR 经济复杂性指数对欧盟气候变化战略的影响：来自MMQR新方法的证据

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-16 DOI: 10.1016/j.dibe.2025.100830

Ömer Faruk Kömürcüoğlu , Elif Duygu Kömürcüoğlu , Sinem Koçak , Dilek Çi̇l , Çiğdem Karış , Aykut Fatih Güven , Mohit Bajaj , Vojtech Blazek

For the European countries, the issue of combating climate change has become a matter of existence. Therefore, it is of extreme importance to present economic–based evidence for these countries' climate action. One emerging yet underexplored area is the environmental implications of the Economic Complexity Index (ECI), which reflects the knowledge intensity embedded in a country's production structure. Despite its relevance, studies examining the relationship between ECI and environmental degradation (ED) in the European context remain scarce. This paper aims to fill this gap by investigating the impact of ECI on ED between 1995 and 2021, focusing on the European Union countries recognized for their environmental sustainability efforts. For this purpose, the relationship between ECI and two of the pioneer indicators of ED—ecological footprint (EFP) and carbon emissions (CO₂)—is assessed through two separate models. To address the dynamic and heterogeneous structure of the relationship, the novel Method of Moments Quantile Regression (MMQR) approach is employed. Empirical evidence suggests that ECI contributes to ED, with a stronger impact observed on CO₂ emissions than on EFP. Another key finding is that higher levels of ED limit the negative environmental effects of ECI. However, the robustness of the findings is confirmed using the Driscoll–Kraay (D–K) standard error estimator and also, the symmetric causality test of Dumitrescu–Hurlin (D–H). As global leaders in environmental initiatives, EU countries must guarantee the availability and variety of green financing sources to expedite the transition to sustainable production methods in sectors impacting the ECI index via the European Investment Bank and the EU Innovation Fund.

Policymakers can provide favorable tax incentives to industries that implement eco-friendly production methods to lower their expenses, thereby rewarding these industries and fostering acceptance of this strategy among sectors beyond this framework. Achieving higher ECI scores through the integration of renewable energy and green technologies is therefore essential for EU countries striving for a greener and more resilient future.

对于欧洲国家来说，应对气候变化问题已经成为一个存在的问题。因此，为这些国家的气候行动提供基于经济的证据是极其重要的。经济复杂性指数（ECI）对环境的影响是一个新兴但尚未得到充分开发的领域，它反映了一个国家生产结构中蕴含的知识强度。尽管具有相关性，但在欧洲背景下检查ECI与环境退化（ED）之间关系的研究仍然很少。本文旨在通过调查1995年至2021年间ECI对经济发展的影响来填补这一空白，重点关注欧盟国家在环境可持续性方面的努力。为此，ECI与生态足迹（EFP）和碳排放（CO2）的两个先锋指标之间的关系通过两个独立的模型进行评估。为了解决动态和异构结构的关系，采用了新的矩量分位数回归方法（MMQR）。经验证据表明，ECI对ED有贡献，对CO2排放的影响大于对EFP的影响。另一个重要发现是，较高水平的ED限制了ECI对环境的负面影响。然而，研究结果的稳健性是通过driscolli - kraay （D-K）标准误差估计量和dumitrescui - hurlin （D-H）的对称因果检验来证实的。作为环境倡议的全球领导者，欧盟国家必须通过欧洲投资银行和欧盟创新基金保证绿色融资来源的可用性和多样性，以加快影响ECI指数的部门向可持续生产方法的过渡。政策制定者可以为实施环保生产方法以降低成本的行业提供优惠的税收激励，从而奖励这些行业，并促进这一框架之外的部门接受这一战略。因此，通过整合可再生能源和绿色技术来获得更高的ECI分数，对于欧盟国家争取更绿色、更有弹性的未来至关重要。

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引用次数: 0

Fabrication of superhydrophobic cellulose aerogel from peanut husk biomass for energy-efficient and environmental applications 花生壳生物质超疏水纤维素气凝胶的制备及其节能环保应用

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-14 DOI: 10.1016/j.dibe.2025.100829

Ubolluk Rattanasak , Thanaphat Thetpitak , Pumipat K. Pachana , Kamchai Nuithitikul , Peerapong Jitsangiam , Vanchai Sata , Chai Jaturapitakkul , Prinya Chindaprasirt

The growing need for sustainable materials in the built environment has intensified interest in upcycling biomass waste into high-performance construction products. This study introduces a novel approach to valorize peanut husks, which is an abundant but underutilized agricultural residue, by extracting cellulose and converting it into multifunctional aerogels. Peanut husk-derived cellulose was combined with sodium alginate/CaCl₂ as a green gelation system, and aerogels with varying cellulose contents (2.5 %, 5 %, 7.5 %, and 10 %) were fabricated via freeze-drying. The samples were further surface-modified with methyltrichlorosilane (MTCS) using a chemical vapor deposition (CVD) method. The resulting aerogels exhibited low densities (0.047–0.130 g/cm³), excellent thermal insulation (0.017–0.029 W m⁻¹ K⁻¹), and high decomposition temperatures (∼336 °C). The MTCS-CVD treatment produced superhydrophobic surfaces (contact angle >150°) with high solvent adsorption capacity (up to 16 × their weight). These results demonstrate a technically feasible route for producing multifunctional cellulose aerogels from agricultural waste, emphasizing material design and process optimization for sustainable applications in energy-efficient and environmentally friendly building materials.

建筑环境中对可持续材料的需求日益增长，这增强了人们对将生物质废物升级为高性能建筑产品的兴趣。花生壳是一种丰富但未被充分利用的农业残留物，本研究介绍了一种新的方法，即提取纤维素并将其转化为多功能气凝胶。花生壳衍生纤维素与海藻酸钠/CaCl2结合作为绿色凝胶体系，通过冷冻干燥制备了不同纤维素含量（2.5 %,5 %，7.5 %和10 %）的气凝胶。采用化学气相沉积法（CVD）对样品进行甲基三氯硅烷（MTCS）表面改性。所得气凝胶具有低密度（0.047-0.130 g/cm3）、优异的绝热性（0.017-0.029 W m−1 K−1）和高分解温度（~ 336 °C）。MTCS-CVD处理产生的超疏水表面（接触角>；150°）具有高溶剂吸附能力（高达16 × 其重量）。这些结果展示了从农业废弃物中生产多功能纤维素气凝胶的技术可行途径，强调了材料设计和工艺优化在节能环保建筑材料中的可持续应用。

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引用次数: 0

Large eddy simulation of optimized air curtain separation via secondary co-flowing jets 二次共流射流优化气幕分离的大涡模拟

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-13 DOI: 10.1016/j.dibe.2025.100826

Claudio Alanis Ruiz , Twan van Hooff , Bert Blocken , GertJan van Heijst

Unconditioned air infiltration through frequently used entrance doors can degrade building energy performance, indoor air quality, and thermal comfort. Air curtains mitigate these effects and are also critical in smoke and dust control, cleanrooms, and cold rooms. Their performance is commonly expressed as separation efficiency, which depends on jet dynamics and entrainment. While most studies consider single-jet air curtains, this work investigates secondary co-flowing jets as a design strategy to reduce entrainment and enhance separation efficiency. Large eddy simulations (LES), validated against a dedicated particle image velocimetry (PIV) dataset of plane turbulent impinging co-flowing jets, assess the influence of key jet parameters: velocity ratio (R), secondary-jet width (W_s), and inter-jet spacing (d). The results indicate that incorporating secondary jets under suitable discharge conditions increases infiltration-based separation efficiency by up to 5.4 % without compromising the combined infiltration–exfiltration metric; the latter can also improve by up to 3 %. Given baseline efficiencies of 86.2 % (infiltration) and 78.7 % (combined) for an optimized single-jet curtain, these gains are significant.

未经调节的空气通过经常使用的入口门渗透会降低建筑的能源性能、室内空气质量和热舒适性。空气帘减轻了这些影响，在烟尘控制、洁净室和冷室中也很重要。它们的性能通常表示为分离效率，这取决于射流动力学和夹带。虽然大多数研究考虑的是单射流气幕，但这项工作研究了二次共流射流作为减少夹带和提高分离效率的设计策略。针对平面湍流撞击共流射流的专用粒子图像测速（PIV）数据集验证了大涡模拟（LES），评估了关键射流参数的影响：速度比(R)、二次射流宽度（Ws）和射流间距(d)。结果表明，在适当的流量条件下，在不影响渗滤综合指标的情况下，引入二次射流可使基于渗透的分离效率提高5.4 %；后者也可以提高高达3 %。考虑到优化的单射流幕的基线效率为86.2 %（渗透）和78.7% %（综合），这些增益是显著的。

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引用次数: 0

Enhancing self-healing concrete performance through optimized bacterial spore encapsulation using response surface methodology 利用响应面法优化细菌孢子包封，提高混凝土自愈性能

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-13 DOI: 10.1016/j.dibe.2025.100828

Jirapa Intarasoontron , Pitcha Jongvivatsakul , Pattharaphon Chindasiriphan , Suched Likitlersuang , Pranee Rojsitthisak , Wiboonluk Pungrasmi

This study presents the optimization of alginate-encapsulated bacterial spores (AEBS) for self-healing concrete. Bacillus sphaericus LMG 22257 spores were encapsulated in alginate microcapsules using ionotropic gelation, followed by freeze-drying. Response surface methodology was employed to determine the optimal conditions for bacterial spore microencapsulation, considering alginate concentration, calcium chloride concentration, and spore inoculum. The resulting AEBS were characterized in terms of encapsulation yield, capsule hardness, and swelling capacity. Statistical analysis revealed the significance and validity of the model. In addition, colorimetric urea analysis showed that AEBS decomposed urea more effectively than non-encapsulated bacterial spores. The self-healing performance was assessed via image processing and microstructural analysis. The mortar specimens treated with AEBS exhibited a complete crack-healing ratio (100 %) within 14 days, with the formation of CaCO₃ confirmed as the healing product. These findings indicate that AEBS prepared under optimal conditions have a strong potential for crack repair in concrete structures.

本研究提出了海藻酸盐包封细菌孢子（AEBS）自愈混凝土的优化。将球形芽孢杆菌LMG 22257孢子包封在海藻酸盐微胶囊中，然后进行冷冻干燥。考虑海藻酸盐浓度、氯化钙浓度和孢子接种量，采用响应面法确定细菌孢子微囊化的最佳条件。所得的AEBS在包封率、胶囊硬度和溶胀能力方面进行了表征。统计分析显示了模型的显著性和有效性。此外，尿素比色分析表明，AEBS比未包封的细菌孢子更有效地分解尿素。通过图像处理和显微结构分析评估了自愈性能。经AEBS处理的砂浆试件在14天内具有完全的裂纹愈合率（100 %），CaCO3的形成被证实为愈合产物。这些结果表明，在最佳条件下制备的AEBS具有很强的修补混凝土结构裂缝的潜力。

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引用次数: 0

Intelligent diagnosis of water supply pipe leakage based on multi-modal information fusion and improved heterogeneous temporal graph neural network 基于多模态信息融合和改进异构时态图神经网络的供水管道泄漏智能诊断

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-11 DOI: 10.1016/j.dibe.2025.100825

Su Changwang , Shan Changxi , Hu Shaowei , Pan Fuqu , Zheng Zhichao , Ye Yuxiao , Zhang Haifen

Leakage detection and diagnosis of water supply pipe are crucial for ensuring urban water safety and reducing waste of water resources. Nowadays, pipe leakage is mainly detected using single-modal information (such as images, sound, etc.) combined with various numerical models or algorithms. However, there are many factors that affect pipe leakage in real environment. It is difficult for single-modal data to reflect the true information of pipe leakage accurately, and the collected data often have the problem of asymmetric information or partial missing. To address these challenges, an improved heterogeneous graph neural network model (p-HTGNN) with multi-modal information fusion is proposed, and the leakage monitoring experiment of the water supply pipe is carried out. The experimental and analytical results show that p-HTGNN achieves an F-score of 88.5 % for the classification of leakage defects and an F-score of 86.5 % for the diagnosis of leakage risk level. The recognition accuracy for different features all exceeds 95 %, with overall performance superior to other traditional detection algorithms. This work provides a novel method for accurately reflecting the actual situation of water supply pipe leakage and for carrying out leakage diagnosis intelligently and efficiently.

供水管道泄漏检测与诊断对于保障城市用水安全和减少水资源浪费至关重要。目前，管道泄漏检测主要采用单模态信息（如图像、声音等）结合各种数值模型或算法进行检测。然而，在实际环境中，影响管道泄漏的因素很多。单模态数据难以准确反映管道泄漏的真实信息，采集到的数据往往存在信息不对称或部分缺失的问题。针对这些问题，提出了一种基于多模态信息融合的改进异构图神经网络模型（p-HTGNN），并进行了供水管道泄漏监测实验。实验和分析结果表明，p-HTGNN对泄漏缺陷的分类f值为88.5 %，对泄漏风险等级的诊断f值为86.5 %。对不同特征的识别准确率均超过95% %，整体性能优于其他传统检测算法。为准确反映供水管道泄漏的实际情况，智能高效地进行泄漏诊断提供了一种新的方法。

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引用次数: 0

Evaluating the impact of aggregate size and reinforcement on alkali-silica reaction in concrete through nondestructive testing techniques 通过无损检测技术评价骨料尺寸和配筋对混凝土中碱-硅反应的影响

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-11 DOI: 10.1016/j.dibe.2025.100824

Li Ai , David Bianco , Vafa Soltangharaei , Rafal Anay , Mahmoud Bayat , Paul Ziehl

This research investigates different nondestructive evaluation (NDE) methods to assess concrete under alkali-silica reaction (ASR) development. Four methods including acoustic emission (AE), ultrasonic pulse velocity (UPV), crack width measurement, and strain measurement were applied to reactive and control specimens under accelerated ASR conditioning. The innovation lies in using NDE methods to monitor concrete with varying aggregate sizes, quantifying method sensitivity through measured indices, and highlighting the effectiveness of each method to capture ASR development. The results indicate that the unconfined reactive fine-aggregate sample exhibited isotropic expansion, while coarse-aggregate specimens showed around 50 % greater longitudinal expansion and AE cumulative signal strength up to 3.2 times higher. Furthermore, the reinforcing effect was more significant in the reactive coarse aggregate samples compared to the reactive fine aggregate ones. The ASR detection effectiveness for the four methods is 67 % for AE, 51 % for strain measurement, 12 % for crack width measurement, and 1 % for UPV.

研究了碱-硅反应（ASR）发展过程中混凝土的无损评价方法。采用声发射（AE）、超声脉冲速度（UPV）、裂纹宽度测量和应变测量四种方法对反应性和对照试样在加速ASR条件下进行测量。创新之处在于使用NDE方法监测不同骨料尺寸的混凝土，通过测量指标量化方法的敏感性，并突出每种方法捕捉ASR发展的有效性。结果表明：无约束反应性细骨料试样表现为各向同性膨胀，粗骨料试样纵向膨胀幅度约为50 %，声发射累计信号强度提高3.2倍；活性粗骨料比活性细骨料的补强效果更显著。四种方法的ASR检测效率分别为声发射的67 %、应变测量的51 %、裂缝宽度测量的12 %和UPV的1 %。

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引用次数: 0

Layout optimization of the grid-shaped metamaterial-based resonators for frequency tuning 基于网格的超材料谐振器的频率调谐布局优化

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-11 DOI: 10.1016/j.dibe.2025.100823

Jiheum Han , Jewoo Choi , Hyo Seon Park

Elastic metamaterials have emerged as a promising approach for addressing vibration problems in engineering structures, yet practical devices and automated or optimized design methodologies for their frequency tuning remain insufficiently explored in the literature. Motivated by this gap, this study proposes a grid-shaped metamaterial and an automated layout optimization method for frequency tuning. The structure, composed of intersecting grid lines, attenuates structural vibrations through its dynamic interaction and enables intuitive frequency tuning owing to its small set of design variables. Numerical and experimental results confirmed that the optimized layouts effectively matched the target frequency, with errors below 0.3 %. The best configuration achieved a 58.95 % reduction in vibration amplitude. A parameter study revealed the influence of the numbers of rows and columns and the line thickness on the frequency. Overall, the study provides an efficient and practical pathway for tuning metamaterials for vibration mitigation.

弹性超材料已经成为解决工程结构振动问题的一种很有前途的方法，但在文献中，用于其频率调谐的实用设备和自动化或优化设计方法仍然没有得到充分的探索。基于这一空白，本研究提出了一种网格状的超材料和一种用于频率调谐的自动布局优化方法。该结构由相交的网格线组成，通过其动态相互作用来衰减结构振动，并由于其设计变量集小而实现直观的频率调谐。数值和实验结果表明，优化后的布局能有效匹配目标频率，误差在0.3 %以下。最佳配置实现了58.95 %的振动幅度减少。参数研究揭示了行、列数和线粗细对频率的影响。总体而言，该研究为调谐超材料减振提供了一条有效而实用的途径。

引用次数: 0

Innovative reaction-rejuvenation of aged SBS modified asphalt binder: From physico-rheological behavior to rejuvenation mechanism 创新反应-老化SBS改性沥青粘结剂的再生：从物理流变行为到再生机理

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-10 DOI: 10.1016/j.dibe.2025.100822

Shanshan Li , Jianying Yu , Ren Wei , Rui Li , Anand Sreeram , Xiong Xu

Recycling waste SBS-modified asphalt (SBSMA) is crucial, yet conventional oil-based rejuvenators severely compromise its high-temperature deformation resistance, limiting its reuse in pavements. The study proposed a new reaction-rejuvenation approach through combining reactive chemicals of 1,4-butanediol diglycidyl ether (BUDGE) and pre-polymerized polyurethane (Pre-PU) with physical rejuvenator of heat transfer oil (HTO) residue to reach the performance optimization of reaction-rejuvenated SBSMA (RRSBSMA) binder. Comprehensive evaluation of the rejuvenated binder's physical and rheological properties demonstrates that this method successfully balances performance. The reactive chemicals effectively mitigate the decline in high-temperature stability, while the HTO residue appropriately improves workability. Mechanism analysis revealed that the chemicals form a rigid, gel-like molecular structure. This network maintains a high modulus, providing excellent rutting resistance—confirmed by complex modulus and accumulated strain results—while simultaneously absorbing the softening HTO residue. This breakthrough enables the high-performance recycling of waste SBSMA, advancing the development of more durable and sustainable asphalt pavements.

回收废弃sbs改性沥青（SBSMA）至关重要，但传统的油基再生剂严重损害了其耐高温变形能力，限制了其在路面中的再利用。本研究提出了将1,4-丁二醇二缩水甘油醚（BUDGE）和预聚合聚氨酯（Pre-PU）的活性化学物质与导热油（HTO）残渣的物理再生剂相结合，以达到反应再生SBSMA （RRSBSMA）粘结剂性能优化的新方法。对再生粘合剂的物理和流变特性的综合评价表明，该方法成功地平衡了性能。反应性化学物质有效地缓解了高温稳定性的下降，而HTO残留物适当地改善了和易性。机理分析表明，这些化学物质形成一种刚性的凝胶状分子结构。该网络保持了高模量，提供了优异的车辙抗力-由复合模量和累积应变结果证实-同时吸收软化的HTO残留物。这一突破使SBSMA废物的高性能回收成为可能，推动了更耐用和可持续的沥青路面的发展。

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引用次数: 0

High-rise timber buildings against wind-induced vibration: A comprehensive study on design criteria, design codes and design cases 高层木结构建筑抗风振设计准则、设计规范和设计案例的综合研究

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-02 DOI: 10.1016/j.dibe.2025.100815

Haoze Chen , Libo Yan , Junaid Ajaz Dand

Timber construction offers significant environmental advantages, and the recent rise of timber buildings, culminating in record-setting high-rises, demonstrates a growing trend toward tall timber structures. However, the low self-weight of timber material makes high-rise timber buildings particularly vulnerable to wind-induced vibrations, which often governs design. Compounding this challenge, the principal design codes and criteria do not offer comprehensive, specific provisions for combined wind-vibration effects from the perspective of timber building. This study aims to 1) evaluate design of timber buildings against wind-induced vibration to provide practical guidance, 2) catalogs current serviceability criteria (i.e. ISO 10137, ISO 6897, AIJ-Guidelines, NBCC-Guidelines, ASCE 7–22, AS/NZS 1170.0 and 1170.2, Eurocode 5) for wind-generated accelerations and displacements of buildings, 3) identify gaps of wind-induced vibration design methods outlined in leading international codes (i.e. Eurocode 1–4, ASCE 7–22, AIJ-RBL, NBCC, AS/NZS 1170.2) from regions actively engaged in timber construction, and 4) analyze the wind-design strategies employed in five completed high-rise timber building projects. Results show that current code methods are constrained by simplified assumptions with strict requirement on building dimensions and profile, lacking timber-specific parameters, e.g. damping and natural frequency. Existing codes do not yet provide sufficiently comprehensive methods for evaluating combined vibration effects, and most realized projects have only partially considered the serviceability requirements, which, although, are not mandatory in current design practice. By integrating these criteria, highlighting the limitations of existing codes, and drawing lessons from existing tall timber structures, this study offers clear guidance for engineers seeking to evaluate and mitigate wind-induced vibrations of timber buildings, thereby supporting the reliable design of future high-rise timber buildings.

木结构建筑具有显著的环境优势，最近木结构建筑的兴起，在创纪录的高层建筑中达到高潮，表明了向高层木结构发展的趋势。然而，木材材料的自重较低，使得高层木结构建筑特别容易受到风振的影响，而风振往往影响设计。使这一挑战更加复杂的是，主要设计规范和标准并没有从木结构建筑的角度对综合风振效应提供全面、具体的规定。本研究旨在1)评估木结构建筑抗风致振动的设计，提供实用指导；2)对建筑风致加速度和位移的现行适用性标准（即ISO 10137、ISO 6897、AIJ-Guidelines、NBCC- guidelines、ASCE 7-22、AS/NZS 1170.0和1170.2、欧洲规范5）进行分类；3)识别主要国际规范(即欧洲规范1 - 4、ASCE 7-22、AIJ-RBL、NBCC、AS/NZS 1170.2)从积极从事木结构建筑的地区，4)分析了五个已完成的高层木结构建筑项目中采用的风力设计策略。结果表明，现有的规范方法受到简化假设的约束，对建筑尺寸和外形要求严格，缺乏木材特有的参数，如阻尼和固有频率。现有的规范还没有提供足够全面的方法来评估组合振动效应，而且大多数已实现的项目只是部分地考虑了可用性要求，尽管在当前的设计实践中不是强制性的。通过整合这些标准，突出现有规范的局限性，并从现有高层木结构中吸取教训，本研究为寻求评估和减轻木结构建筑风振的工程师提供了明确的指导，从而支持未来高层木结构建筑的可靠设计。

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引用次数: 0

Synergistic application of modified zeolite and biochar in improving the performance of sandy vegetation concrete 改性沸石与生物炭在改善砂质植被混凝土性能中的协同应用

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment

Pub Date : 2025-12-01 DOI: 10.1016/j.dibe.2025.100821

Daxiang Liu , Yexiong Zhou , Xiuzheng Zhang , Chao Kang , Zhiyou Huang , Kaile Wang , Boyang Xu , Zuosen Luo , Dong Xia , Mingyi Li , Xudong Hu , Wennian Xu , Yueshu Yang

The combined use of zeolite (ZL) and biochar (BC) can effectively address the problems of poor anti-erodibility and fertility retention capacity of vegetation concrete (VC) prepared from sandy soil. Natural ZL (NZL), especially clinoptilolite, has some disadvantages, such as presence of numerous impurities distributed in the pores and low surface activity, which lead to insufficient adsorption ability. To fully utilize the synergistic effect of ZL and BC, NZL was modified into physical (PZL), chemical (CZL), and composite-modified ZL (SZL). Results showed trend in the average pore size was SZL > CZL > PZL > natural ZL, and the changes in the functional groups on the surface of SZL was the most significant. Modified ZLs enhanced VC performance: PZL had the strongest effect on anti-erodibility, while SZL was most effective in improving fertility and retention. Our results provided a useful method for treating engineering defects in VC prepared using sandy soil.

沸石（ZL）与生物炭（BC）的联合使用，可以有效解决沙土植被混凝土（VC）抗蚀性和保肥力差的问题。天然ZL (NZL)，特别是斜沸石，存在着一些缺点，如存在大量的杂质分布在孔隙中，表面活性较低，导致吸附能力不足。为了充分利用ZL和BC的协同作用，将NZL改性为物理改性（PZL）、化学改性（CZL）和复合改性ZL （SZL）。结果表明，平均孔径变化趋势为SZL >； CZL >； PZL >； 天然ZL，其中SZL表面官能基团变化最为显著。改良zl提高VC性能：PZL对抗蚀性的影响最大，而SZL对肥力和保墒的影响最大。本研究结果为处理砂质土制备的VC的工程缺陷提供了有益的方法。

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引用次数: 0