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THE IMPACT OF CLIMATE CHANGE ON PAVEMENT TEMPERATURES AND ASPHALT BINDER GRADE SELECTION IN ESTONIA BASED ON DIFFERENT CLIMATE CHANGE SCENARIOS

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Baltic Journal of Road and Bridge engineering 2025年第1期20卷 94-113页

作者： Kontson, Karli Lill, Kristjan Ellmann, Artu Aavik, Andrus Department of Civil Engineering and Architecture Tallinn University of Technology Tallinn Estonia

This paper examines the impact of climate change on asphalt pavement temperatures and Superpave asphalt binder Performance Grade (PG) selection in Estonia. Pavement temperatures were estimated using statistical-empirical pavement temperature prediction models tailored for Estonian conditions. The impact of climate change on pavement temperatures was assessed based on the latest climate change models, assuming three different climate change scenarios for the near, medium and long terms. Projected changes ref lect warming trends, with both coastal and mainland areas experiencing substantial shifts in binder grades. Asphalt binder low temperature PG grades are more significantly inf luenced by climate change, leading to narrower pavement temperature ranges in the region. © 2025 The Author(s).

关键词： Superpave

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Effect of a Carbon Fibre-steel Fibre-graphite Conductive Filler on the Electrothermal Properties of Cementitious Materials

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 141-151页

作者： FAN Yanan WEI Hong ZHENG Hongyong DU Hongxiu Department of Architecture and Environmental Engineering Taiyuan UniversityTaiyuan 030032China College of Civil Engineering Taiyuan University of TechnologyTaiyuan 030032China

Carbon fibre,steel fibre and graphite were used as conductive fillers to prepare cementitious materials with excellent electrothermal *** electrically conductive cementitious materials with different volume dosages were analysed through compressive and flexural strength,electrochemical impedance spectroscopy and temperature rise *** equivalent circuit model was established to study the electrically conductive heat generation mechanism in the electrically conductive cementitious *** results indicate that the mechanical properties of cementitious composite materials with a ternary conductive phase are better than those of pristine cementitious materials because the fibrous filler improves their mechanical ***,the incorporation of graphite in the material reduces its *** fibrous and point-like conductive phase materials into the cementitious material enhances the overall conductive pathway and considerably reduces the electrical resistance of the cementitious material,enhancing its conductive *** volume ratios of carbon fibre,steel fibre and graphite that achieve an optimal complex doping in the cementitious material were 0.35%,0.6%and 6%,*** was determined using the mutation point of each circuit element parameter as the percolation *** addition,at a certain safety voltage,there is a uniform change between the internal and surface temperatures of the conductive cementitious material,and the heating effect in this materialis is considerably better than that in the pristine cementitious material.

关键词： cementitious composites conductive fillers electrothermal properties electrochemical impedance spectroscopy

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Stochastic response of steel columns subjected to lateral blast based on modified single degree of freedom (MSDOF) method

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Resilient Cities and Structures 2025年第1期4卷 1-15页

作者： Momeni, Mohammad Bedon, Chiara Hadianfard, Mohammad Ali Malekpour, Sina Department of Civil Engineering Faculty of Engineering Fasa University Fasa Iran Department of Engineering and Architecture University of Trieste Trieste Italy Department of Civil and Environmental Engineering Shiraz University of Technology Shiraz Iran

This paper aims to evaluate the stochastic response of steel columns subjected to blast loads using the modified single degree of freedom (MSDOF) method, which assessed towards the conventional single degree of freedom (SDOF) and the experimentally validated Finite Element (FE) methods (LSDYNA). For this purpose, special attention is given to calculating the response of H-shaped steel columns under blast. The damage amount is determined based on the support rotation criterion, which is expressed as a function of their maximum lateral mid-span displacement. To account for uncertainties in input parameters and obtain the failure probability, the Monte Carlo simulation (MCS) method is employed, complemented by the Latin Hypercube Sampling (LHS) method to reduce the number of simulations. A parametric analysis is hence performed to examine the effect of several input parameters (including both deterministic and probabilistic parameters) on the probability of column damage as a function of support rotation. First, the MSDOF method confirms its higher accuracy in estimating the probability of column damage due to blast, compared to the conventional SDOF. The collected results also show that uncertainties of several input parameters have significant effects on the column behavior. In particular, geometric parameters (including cross-sectional characteristics, boundary conditions and column length) have major effect on the corresponding column response, in the same way of input blast load parameters and material properties. © 2024 The Author(s)

关键词： Monte Carlo methods

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Effect of thermal bridges on the energy performance of Chinese residential buildings

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Energy and Built Environment 2025年第3期6卷 545-554页

作者： Chen, Guojie Hou, Yifan Ge, Hua Zhang, Shuyan Liu, Xiangwei Guo, Xingguo Xie, Dong School of Civil Engineering University of South China Hengyang China Department of Building Civil and Environmental Engineering Concordia University Canada School of Civil Engineering and architecture Nanchang University Nanchang China

Thermal bridges may represent up to 50 % of the building's envelope area and may increase the energy consumption of buildings by up to 30 %, however their impact is often not taken into account adequately in China. In this study, the energy performance of a typical two-story residential building under four different Chinese climate zones is investigated using WUFI Plus program in terms of annual heating and cooling energy demands. Several typical thermal bridges were taken into consideration. Two methods were used to evaluate the effect of thermal bridges on the building energy performance, the simplified method commonly used in China and the dynamic 3D modelling method, and were compared to do not consider thermal bridge. Also, two different types of building envelope, brick wall and aerated concrete wall, were used to evaluate the effect. The results show that by taking into account the thermal bridges, the annual heating energy demands of residential building increase 21.2 %, 24.8 %, 27.8 %, and 16.6 % under the four Chinese climate zones. Therefore, attention should be paid in the building envelope design to reduce thermal bridges. Compared to the dynamic 3D modelling method, the simplified method underestimates annual heating and cooling energy demands. © 2024

关键词： Energy utilization

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Exploring the stainless-steel beam-to-column connections response:A hybrid explainable machine learning framework for characterization

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Frontiers of Structural and civil engineering 2025年第1期19卷 34-59页

作者： Sina SARFARAZI Rabee SHAMASS Federico GUARRACINO Ida MASCOLO Mariano MODANO Department of Structures for Engineering and Architecture University of Naples"Federico II"Naples 80125Italy Department of Civil and Environmental Engineering Brunel University LondonLondon UB83PHUK

Stainless-steel provides substantial advantages for structural uses,though its upfront cost is notably ***,it’s vital to establish safe and economically viable design practices that enhance material *** development relies on a thorough understanding of the mechanical properties of structural components,particularly *** research advances the field by investigating the behavior of stainless-steel connections through the use of a four-parameter fitting technique and explainable artificial intelligence *** was conducted on eight different machine learning algorithms,namely,Decision Tree,Random Forest,K-nearest neighbors,Gradient Boosting,Extreme Gradient Boosting,Light Gradient Boosting,Adaptive Boosting,and Categorical *** Additive Explanations was applied to interpret model predictions,highlighting features like spacing between bolts in tension and end-plate height as highly impactful on the initial rotational stiffness and plastic moment *** showed that Extreme Gradient Boosting achieved a coefficient of determination score of 0.99 for initial stiffness and plastic moment resistance,while Gradient Boosting model had similar performance with maximum moment resistance and ultimate rotation.A user-friendly graphical user interface(GUI)was also developed,allowing engineers to input parameters and get rapid moment–rotation *** framework offers a data-driven,interpretable alternative to conventional methods,supporting future design recommendations for stainless-steel beam-to-column connections.

关键词： steel connections stainless-steel machine learning explainable models moment-rotation response

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Infrared-transparent bubble wrap assisted high-intensity radiant cooling

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Building Simulation 2025年第1期18卷 47-63页

作者： Xudong Wei Huijun Wu Ke Du Jiaan Gu Gongsheng Huang Xinhua Xu School of Civil Engineering and Transportation Guangzhou UniversityGuangzhou510006China Department of Architecture and Civil Engineering City University of Hong KongHong KongChina Department of Building Environment&Energy Engineering Huazhong University of Science&TechnologyWuhan430074China

Covering the radiant cooling surface with infrared-transparent membrane effectively improves the condensation resistance and cooling capacity of radiant ***,the air layer structure formed by the infrared-transparent and double-layer hollow membranes is easy to destroy,resulting in condensation *** by the hollow structure of natural bamboo,an infrared-transparent bubble wrap assisted radiant cooling panel(BWRCP)aiming at improving the strength and cooling capacity was proposed by using the infrared-transparent bubble wrap consisting of infrared-transparent membrane and air-filled pores to layer the radiant cooling *** experimental investigation and numerical calculation of the cooling capacity of the infrared-transparent bubble wrap assisted radiant cooling system were carried *** results showed that the cooling capacity of BWRCP at condensation-free condition was 93.54 W/m^(2),which was 33%higher than traditional radiant cooling without covering infrared-transparent bubble *** results showed that the air-contact surface temperature of the infrared-transparent bubble wrap was higher than the dew point *** provides condensation-free operation in the thermal environment of 26℃and 45%–80%***,compared with traditional radiant cooling,BWRCP significantly improves the cooling capacity at condensation-free *** demonstrated a novel structure design and operation guidance for the high-performance radiant cooling technology.

关键词： infrared-transparent bubble wrap radiant cooling condensation cooling capacity

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Preparation of modified silica superhydrophobic coating for exterior wall decoration and its stain resistance

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International Journal of Microstructure and Materials Properties 2025年第1-2期18卷 59-72页

作者： Chen, Lili Department of Architecture and Civil Engineering Hope College Southwest Jiaotong University Sichuan Chengdu610400 China

In order to optimise the application of modified silica superhydrophobic coating for building exterior wall decoration, the research on the preparation of modified silica superhydrophobic coating and its pollution resistance was carried out. First, select material to prepare modified nano SiO2 particles. Then, use the modified nano SiO2 particles, PVDF and DMF components with excellent superhydrophobic properties of modified silica coating preparation. Finally, explore the influence of different SiO2 particles on the performance of coating and coating on different substrate film drying time and stain resistance. The test results show that when the SiO2 particle addition amount is 80 wt% and the matrix is horse mouth iron, the superhydrophobic performance, wear resistance and stain resistance of the coating reach the best. Copyright © 2025 Inderscience Enterprises Ltd.

关键词： Walls (structural partitions)

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Analysis of Rivers’ Hidden Cooling Potential on a River Front City- a Case Study on Vijayawada City, Andhra Pradesh, India

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Journal of The Institution of Engineers (India): Series A 2025年第1期106卷 59-69页

作者： Nekkanti, Haripavan Radhakrishnan, Nisha D, Kannamma Department of Civil Engineering National Institute of Technology Tiruchirappalli India Department of Civil Engineering Shri Vishnu Engineering College for Women Andhra Pradesh Bhimavaram534202 India Department of Architecture National Institute of Technology Tiruchirappalli India

The importance in studying issues like heat waves, urban heat islands, and polluted air, is on the rise in the perspective of global warming. One effective method to mitigate the hot climate in urban areas is by harnessing the cooling effect of rivers. This study aims to examine the impact of the Krishna River on its surrounding urban environment by utilizing geospatial techniques in identifying and analysing the surface temperature and urban morphology data. Additionally, it seeks to explore the potential of rivers in cooling urban areas using linear regression models. The findings of this study indicate the following key points. Initially, it is noteworthy that aqueous entities possess a cooling impact on the adjacent environment. The maximum range of this cooling influence is observable at 2,000 m, while the most favourable distance is at 1200–1400 m. Since the stretch of the river in the study area was divided with a barrage as upstream and downstream, the river cooling effect is clear in the upstream side as it contains water when compared to the downstream side with dry sand. The findings indicate a correlation between elevation in the Normalised Difference Vegetation Index and a reduction in Land Surface Temperature (LST), as evidenced by negative correlation. Moreover, an elevation in the Built-Up Index results in reduction in Land Surface Temperature (LST) values. With regards to the Sky View Factor, it is generally observed that higher values are associated with elevated Land Surface Temperature (LST), except in regions where air circulation is enhanced, leading to a reduction in temperatures. The results give the view over possibility of measures that can be itaken to sustain the urban environment and reduce the impact of the heat island effect. Examples include increasing the amount of urban vegetation and reducing the density of buildings. The findings of this study provide important empirical facts and instructive examples to support the efforts of urb

关键词： Surface temperature

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IMPACT OF VISIBILITY ON TRAFFIC INCIDENTS AT SIGNALIZED INTERSECTIONS – A CASE STUDY IN POLISH CITIES

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Archives of Transport 2025年第1期73卷 53-78页

作者： Iwanowicz, Damian Klusek, Radoslaw Department of Road and Transportation Engineering and Geotechnic Faculty of Civil and Environmental Engineering and Architecture Bydgoszcz University of Science and Technology Bydgoszcz Poland

In urban agglomerations, signalized intersections are common. However, in traffic management, safety-focused strategies are often sacrificed for traffic efficiency by allowing simultaneous multiple conflicting movements. We identified this issue by analyzing the most dangerous signalized intersections in several Polish cities. Our research evaluated whether obstructed sight distances between major and minor traffic streams could be a significant problem at these intersections. To achieve this, we employed existing models of visibility analysis related to stopping sight distance. We determined the key parameter for stopping sight distance based on our vehicle speed studies. Tests were conducted using unmanned aerial vehicles over the intersections in the cities under consideration. Subsequently, we adapted available sight distance models to characterize conflicting streams with simultaneous green signals in a signal phase. We distinguished between major movements, including tram, pedestrian, and cyclist traffic, and minor streams, primarily involving turning vehicle movements at the intersection. Through this approach, we analyzed stopping sight distance and found that in about 60% of the cases studied, the obstructed sight distances led to a higher number of traffic incidents in the areas of conflict between major and minor traffic streams. The overall number of traffic incidents was more than 57% higher in areas with obstructed sight distance conditions, with the worst statistics involving incidents with vulnerable road users. This straightforward approach confirmed the findings of many studies that sight distance is one of the most critical factors influencing traffic safety. Based on our research findings, we recommend implementing safe traffic management strategies at intersections with obstructed sight distances, specifically multiphase signalization. Additionally, due to the often-necessary compromise in phases involving pedestrian and cyclist traffic, we reco

关键词： Bicycles

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Application of life cycle assessment for enhancing sustainability of district heating: A multi-level approach

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Energy Reports 2025年 13卷 5077-5096页

作者： Tien, Paige Wenbin Wang, Hao Tokbolat, Serik Boukhanouf, Rabah Calautit, John Darkwa, Jo Department of Architecture and Built Environment University of Nottingham United Kingdom Department of Civil Engineering University of Nottingham Nottingham United Kingdom

District heating (DH) is a proven heat generation and distribution technology that enhances energy efficiency and reduces carbon emissions at scale, making it a key component of sustainable energy strategies. Compared to traditional heat generation methods such as using onsite fossil-fuelled combustion boilers or electrically driven heating systems, DH offers superior environmental advantages, particularly when renewable energy and waste heat are deployed as primary fuel energy mix. To comprehensively evaluate the sustainability of DH, life cycle assessment (LCA) is widely adopted to determine environmental impacts across all life cycle stages, from material extraction to disposal. This systematic review identifies the absence of a unified, adaptable framework for LCA application in DH systems. To address this, the study proposes a structured multi-level framework, interpreting methodological diversity across component, facility, and network levels. Component-level studies offer insights into specific technologies and materials;facility-level assessments focus on operational performance and energy sources;network-level evaluations provide holistic system impacts. Aligning studies within these analytical levels enables fairer comparisons, supports cross-regional learning, and promotes methodological integration. Recurring challenges include inconsistent methodologies, varying system boundaries, and limited local data. Emerging technologies such as hybrid systems, smart grids, and energy storage remain underrepresented in LCA studies. Tools like SimaPro, GaBi, and OpenLCA are widely used, yet the rapid evolution of DH systems calls for more tailored applications. This review supports the development of standardised, yet flexible LCA practices and proposes a refined multi-level framework to guide comprehensive, context-specific evaluations. It emphasises the importance of validating approaches across diverse contexts and strengthening LCA's contribution to the design o

关键词： Clean energy

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