Journal of building engineering最新文献

{"title":"Influence of using wood biomass fly ash as filler on the rheological and physical properties of cementitious pastes","authors":"Joëlla Grâce Dossa, Jonathan Page, Yannick Vanhove, Chafika Djelal","doi":"10.1016/j.jobe.2025.114361","DOIUrl":"https://doi.org/10.1016/j.jobe.2025.114361","url":null,"abstract":"The increasing consumption of biomass by the energy sector is generating a substantial rise in biomass fly ash (BFA). This experimental research explores the use of biomass fly ash as a substitute for limestone filler (LF) in cement-based materials. The study proposes a new recovery pathway for these industrial waste products and addresses the issue of overexploitation of traditional mineral resources. In the research, BFA was first characterized through physicochemical analyses and compared to limestone filler to identify the similarities between the two materials. Subsequent tests were carried out on ordinary cement CEM I pastes and composite cement CEM III pastes, gradually replacing limestone filler with BFA in volumetric proportions from 0 to 100 %. The results indicate that BFA incorporation reduces flowability, due to increased water demand, and modifies the rheological properties by increasing yield stress and viscosity. In the hardened state, BFA maintains the mechanical properties of the pastes relative to those formulated with limestone filler, while having a minor effect on the physical properties. This study demonstrates that BFA has real potential as a filler in fluid eco-friendly cementitious materials.","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"11 suppl_1 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311770","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":"On the use of recycled UHPC to reduce cement demand in UHPC mixes: mechanical and durability validation","authors":"Marco Davolio ,&nbsp;Estefania Cuenca ,&nbsp;Davide di Summa ,&nbsp;Ruben Paul Borg ,&nbsp;Liberato Ferrara","doi":"10.1016/j.jobe.2025.114112","DOIUrl":"10.1016/j.jobe.2025.114112","url":null,"abstract":"<div><div>Ultra-High Performance Concrete (UHPC) offers superior durability and strength, as compared to ordinary concrete solutions, but its inborn environmental footprint is dictated by high cement content and the environmental impact of raw material extraction, which would require a heavily optimized structural and process design to be levelled off. With the aim of assessing effectiveness of strategies aimed at reducing the embodied carbon footprint of UHPC mixes, this study investigates two recycled UHPCs (R-UHPC) designed by replacing all natural aggregates with crushed UHPC and partially substituting Portland cement (30 %) with recycled material. One mix used ungraded crushed UHPC; the other included additional fine fractions (≤75 μm) obtained through further processing. The partial replacement of cement constitutes a novelty alongside the widely established aggregate replacement in high performance cementitious materials. Both mixes achieved superior compressive strength and comparable flexural strength to the reference UHPC, while demonstrating effective autogenous self-healing under repeated NaCl exposure, with full recovery of crack sealing, sorptivity, strength, and stiffness over six months. However, the mix containing recycled fines showed reduced performance under repeated damage-healing cycles, mainly attributed to its higher water absorption. A cradle-to-gate life cycle assessment using the CML-IA method and a functional unit of 1 m³ – subsequently normalized over long-term compressive and flexural strength – revealed that mechanical performance strongly influences environmental impacts. Notably, the additional processing and increased input volumes required for fine fractions led to higher impacts across all categories. This work lays the foundation for a rational and engineering-wise effective promotion of the circular economy concept in the design and production of highly durable cement-based materials and structures by demonstrating unexplored and effective recycling strategies for UHPC elements at the end of their service life, facilitated by their unaltered condition even after prolonged use.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"114 ","pages":"Article 114112"},"PeriodicalIF":7.4,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270886","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":"Synergistic effects of steel-polypropylene hybrid fibers on bond-slip behavior of deformed rebars in concrete","authors":"Gonghui Gu, Kelong Yuan, Siyao Li, Ahmed Al-Mansour, Chuanqing Fu, Qinfang Zhong, Houren Xiong, Junhong Chen","doi":"10.1016/j.jobe.2025.114356","DOIUrl":"https://doi.org/10.1016/j.jobe.2025.114356","url":null,"abstract":"Hybrid fiber-reinforced concrete (FRC) has demonstrated significant potential in high-performance construction applications due to its superior toughness and excellent bond behavior with steel bars. This work aims to clarify the synergistic mechanisms of rigid-flexible hybrid fibers on the mechanical properties and the steel-concrete bond characteristics of hybrid FRC, thereby providing a theoretical basis for its engineering application. The results indicate that the incorporation of steel fibers and polypropylene (PP) fibers optimizes the macro- and micro-pore structures, effectively inhibits crack development through crack-bridging effects at different scales, and transforms the failure mode from concrete splitting to bar pull-out, significantly enhancing the bond strength and pull-out energy of the bar. The pull-out energy initially increases and then decreases with the hybrid fiber volume fraction, following a parabolic trend. When the hybrid fiber content exceeds a certain threshold, it leads to a deterioration of the steel-concrete interface quality and a reduction in pull-out energy. These findings provide valuable theoretical guidance for the high-performance application of hybrid FRC in reinforced concrete structures.","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"22 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311771","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":"Field test of PV-solar chimney to enhance natural ventilation in an exhibition hall: A case study","authors":"Tong Wei, Yunhui Rao, Haonan Jiang, Chengqian Xu, Zhaolin Gu, Zhuang Liu, Xilian Luo","doi":"10.1016/j.jobe.2025.114353","DOIUrl":"https://doi.org/10.1016/j.jobe.2025.114353","url":null,"abstract":"Solar chimney ventilation has been widely studied in simulations and small-scale experiments, however, field investigations in real buildings remain limited, particularly regarding the dynamic response of ventilation performance to outdoor climate conditions. To clarify this issue, a field test was conducted on a photovoltaic (PV) - solar chimney ventilation system in an exhibition hall with a glass curtain wall structure. Several human-body heat simulators were used to reproduce realistic indoor thermal loads, which were designed for a large public space. The study evaluated the ventilation performance and heat removal across three ventilation modes: buoyancy-driven, wind-driven, and hybrid-driven. The results showed that the solar chimney significantly improved indoor ventilation efficiency, with the chimney wall temperature peaking at 37.7 °C during the sunny day, leading to a 6.9 °C increase in exhaust air temperature under thermal-driven ventilation. Ventilation rates were directly proportional to the temperature difference between the indoor and outdoor temperatures. Under the wind-driven ventilation conditions, the outdoor wind speed enhanced air movement, achieving an average rate of 1105.7 m<ce:sup loc=\"post\">3</ce:sup>/h, although fluctuations in wind speed reduced the reliability of heat removal. Hybrid-driven ventilation increased airflow by 8.8 % and indoor heat removal by 20.8 % compared to buoyancy-driven ventilation, demonstrating both higher efficiency and greater reliability than the individual buoyancy- or wind-driven modes. Climatic factor analysis revealed solar radiation as the most significant contributor to ventilation performance. This study provides valuable insights for the optimization of solar chimney designs in large spaces and presents a promising approach for energy-efficient and sustainable building design.","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311772","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":"Mechanical properties of 3D printed concrete irregular structural formwork: Experimental study and finite element analysis","authors":"Wei Ma, Junjie Chen, Yuntong Dai, Yaya Zhou, Junlong Ren, Lei Wang, Qinghu Xu","doi":"10.1016/j.jobe.2025.114252","DOIUrl":"https://doi.org/10.1016/j.jobe.2025.114252","url":null,"abstract":"3D printed concrete formwork demonstrates unique advantages in meeting the complex design and customization needs of the construction industry. However, most existing research focuses primarily on printing techniques and material optimization, with limited studies addressing its mechanical behavior during construction. This gap hinders its application in scenarios requiring complex geometries and high performance. To address this, the present study investigates the mechanical behavior of 3D printed concrete irregular formwork during concrete pouring through both theoretical and experimental approaches. Lateral pressure tests under different working conditions, theoretical calculations incorporating vibration effects, and finite element analysis were conducted to examine the stress and deformation behavior of the formwork. Experimental results indicate that the overall deformation of the 3D printed concrete irregular formwork was within 0.375 mm, with interlayer displacement all below 1.122 × 10<ce:sup loc=\"post\">−4</ce:sup> mm, demonstrating good structural integrity. The vibration method significantly influenced the lateral pressure distribution. A scheme involving vibration every 0.5 m during pouring, followed by full vibration after pouring, produced a more uniform lateral pressure, making it the preferred method. Moreover, the combined stresses at all measurement points during pouring, including normal stress, shear stress, and lateral pressure, were lower than the theoretical values calculated from the design loads. Finite element simulation results exhibited strong agreement with experimental data. Overall, the 3D printed concrete irregular formwork possess superior performance during concrete pouring, addressing issues such as deformation susceptibility, difficulty in formwork assembly, and high costs associated with traditional formwork in complex structures. It also ensures structural stability and uniform stress distribution while significantly reducing construction time, offering a novel pathway for precise and sustainable construction of geometrically complex buildings.","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"137 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311773","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":"Seismic performance of concentrically braced frames with a new Double-Stiffened-Slit Damper: a numerical investigation","authors":"Samaneh Jalal ,&nbsp;Yashar Bakhshayesh ,&nbsp;Bahram Mirzaie Abar ,&nbsp;Reyes Garcia ,&nbsp;Iman Hajirasouliha","doi":"10.1016/j.jobe.2025.114288","DOIUrl":"10.1016/j.jobe.2025.114288","url":null,"abstract":"<div><div>Strong earthquakes often produce buckling of the diagonal members of Concentrically Braced Frames (CBFs), thus reducing their energy dissipation capacity and effectiveness. This article numerically investigates the behavior of a new Double Stiffened Slit Damper (DSSD) that prevents such buckling. A new design procedure for the DSSD is first proposed. Three reference specimens (two slit dampers, one brace member) tested previously are then modeled and calibrated in Abaqus®. After calibration, the models are modified to undertake a parametric study aimed at optimizing the DSSD's strength and energy dissipation by considering different lengths, thicknesses and heights of the damper components. Subsequently, the hysteretic behavior, strength degradation, energy dissipation and plastic damage of braces with the new DSSD are investigated in Abaqus®. The numerical results indicate that braces with DSSDs have stable hysteretic behavior, without strength degradation nor buckling. The proposed DSSD also enhances the energy dissipation of the braces by up to 189% over conventional bare braces. Next, 4-, 8- and 20-story Special Concentric Braced Frames (SCBFs) with and without the new DSSDs are subjected to time-history analyses in SAP2000® using seismic records. Compared to bare SCBFs models, the SCBFs with DSSDs satisfied a Life Safety (LS) performance level and experienced (on average) up to 57.8% lower base shears. Moreover, the new DSSD effectively prevent damage to the braces by acting as a “fuse” during strong earthquakes. This article contributes towards the development of new dampers for improving the performance of steel braced buildings located in seismic areas.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"114 ","pages":"Article 114288"},"PeriodicalIF":7.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270916","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":"Thermo-mechanical activation of recycled concrete powders for improved CO2 uptake and mineral stability","authors":"Prasath Kalyanasundaram,&nbsp;Aditya Singh Rajput","doi":"10.1016/j.jobe.2025.114319","DOIUrl":"10.1016/j.jobe.2025.114319","url":null,"abstract":"<div><div>This study investigates the carbonation potential of Recycled Concrete Powders derived from construction and demolition waste, focusing on the effects of particle size and beneficiation methods. RCP was subjected to mechanical and thermo-mechanical treatments, and then categorized into two size fractions: &lt;150 μm and &lt;300 μm. The influence of these parameters on CO₂ uptake and mineralogical transformation was assessed using a comprehensive suite of characterization techniques, including particle size distribution, X-ray fluorescence, X-ray diffraction, Fourier-transform infrared spectroscopy, Raman spectroscopy, and thermogravimetric analysis. Results showed that thermo-mechanical treatment significantly enhanced carbonation reactivity, with the TM150 fraction achieving the highest CO₂ uptake (9.83 %) and a degree of carbonation of 45.62 % after 24 h of accelerated CO₂ curing. Thermal activation increased oxide availability (notably CaO), while finer particles improved surface reactivity and carbonation kinetics. Spectroscopic and thermal analyses confirmed the conversion of portlandite and C-S-H into stable CaCO₃ polymorphs, particularly calcite. This study demonstrates that integrating thermal pre-treatment with particle size refinement offers a promising route for valorizing Recycled Concrete Powders as low-carbon supplementary cementitious materials, contributing to circular construction and carbon sequestration efforts.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"114 ","pages":"Article 114319"},"PeriodicalIF":7.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270918","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":"Flexural damage characterization of lightweight ultra-high performance concrete by recycled powder revealed based on acoustic emission technology","authors":"Shuling Gao, Mengyuan Tian","doi":"10.1016/j.jobe.2025.114260","DOIUrl":"https://doi.org/10.1016/j.jobe.2025.114260","url":null,"abstract":"Lightweight ultra-high-performance concrete (L-UHPC) combines excellent mechanical performance with reduced density, making it highly promising for engineering applications in bridges, super-high-rise buildings, and precast components. Replacing cement with recycled powder (RP) is an effective approach to utilizing construction waste as a resource. To address the limitations of traditional testing methods in revealing the influence of material composition on internal dynamic damage, this study integrates acoustic emission (AE) technology with backscattered electron scanning electron microscopy (BSE) and fractal dimension analysis. The effects of different RP replacement rates (0 %, 10 %, 20 %, and 30 %) on the bending performance and damage evolution mechanisms of recycled powder lightweight ultra-high-performance concrete (RP-L-UHPC) were systematically investigated. The results show that at a 10 % RP replacement rate, the 28-day mechanical strength is only slightly lower than that of RP-free samples, while the bending toughness is significantly enhanced. At this substitution level, the proportion of tensile cracks reaches its maximum, and bending failure is mainly caused by steel fiber pull-out. AE energy and <ce:italic>b-value</ce:italic> analyses reveal the transformation of cracks from multiple microcracks to a dominant main crack, whereas fractal dimension analysis quantitatively characterizes the complexity of crack propagation. Overall, a 10 % RP replacement rate optimizes the failure mode, delays crack propagation, and improves toughness. This study proposes a multidimensional damage analysis framework that systematically reveals the influence of RP on the bending performance and damage evolution of L-UHPC, providing both theoretical support and engineering guidance for the efficient utilization of recycled resources and the development of green lightweight ultra-high-performance concrete.","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"6 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311732","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":"Quantitative evaluation of temperature and relative humidity effects on 222 nm UVGI air disinfection in a novel wind tunnel system","authors":"Junzhou He,&nbsp;Qianshun Liang,&nbsp;Saichong Zhang,&nbsp;Miao Yu,&nbsp;Hongtao Xu,&nbsp;Mingrui Cao,&nbsp;Yufeng Su,&nbsp;Chaofan Lin,&nbsp;Guangya Jin,&nbsp;Zhijian Liu","doi":"10.1016/j.jobe.2025.114300","DOIUrl":"10.1016/j.jobe.2025.114300","url":null,"abstract":"<div><div>Airborne transmission is a significant pathway for pathogen spread, making air disinfection crucial for preventing infectious diseases. Ultraviolet Germicidal Irradiation (UVGI) is widely recognized for air disinfection, and 222 nm UVGI has recently been shown to be safe for human exposure, making it a promising technology. However, the impact of temperature and relative humidity (RH) on 222 nm UVGI's efficacy remains underexplored. This study used a novel wind tunnel testing system and multi-point sampling to examine the effects of temperature and RH on 222 nm UVGI performance, comparing it to traditional 254 nm UVGI. The results revealed that temperature has minimal impact on disinfection efficacy, while RH significantly reduces its effectiveness. At 23 °C, the inactivation rate constants for <em>Serratia marcescens</em> were 35.60 cm²/mJ at 30 % RH and 36.81 cm²/mJ at 43 % RH. However, at 55 % and 68 % RH, these values dropped significantly to 9.03 cm²/mJ and 0.00 cm²/mJ, respectively. Furthermore, 222 nm UVGI outperformed 254 nm UVGI in disinfection efficacy. At 23 °C and 30 % RH, the inactivation rate constant for 254 nm UVGI was 15.00 cm²/mJ, much lower than the 35.60 cm²/mJ for 222 nm UVGI. These findings underscore the importance of temperature and RH in optimizing UV-based air disinfection.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"114 ","pages":"Article 114300"},"PeriodicalIF":7.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270573","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":"Characterization of the microstructure for hydration products of various cements and the mechanism of radiation shielding effectiveness","authors":"Qiyang Xu ,&nbsp;Qingjun Ding ,&nbsp;Peng Zhou ,&nbsp;Shaolong Huang ,&nbsp;Dongdong Chen","doi":"10.1016/j.jobe.2025.114322","DOIUrl":"10.1016/j.jobe.2025.114322","url":null,"abstract":"<div><div>This study systematically evaluated the radiation shielding performance and mechanical performance of various cement pastes, including High ferrite Portland cement (HFPC), Sulfoaluminate cement (SAC), and Portland cement (CEM). The hydration products of HFPC, SAC, and CEM demonstrate a high degree of consistency, primarily comprising calcium silicate hydrate(C-S-H) gels, calcium hydroxide(CH), and ettringite(AFt). Additionally, compared to CEM and HFPC, SAC exhibits the lowest porosity at only 0.7229 %. Portland cement shows more significant mass loss during heating, which is closely related to its higher content of AFt and CH in its hydration products. It was also found that AFt underwent significant conversion to AFm and TAH in Portland cement during later hydration stages. In contrast, HFPC and SAC exhibited no statistically significant differences in AFt and AFm ratios over the same period, indicating inhibited phase transformation kinetics. The linear attenuation coefficients(μ) for gamma rays from ⁶⁰Co and ¹³⁷Cs sources, as well as the effective neutron removal cross-sections(ΣR), were calculated via Monte Carlo methods (Geant4). It was concluded that the μ values of the samples increased with increasing density. Compared to SAC and HFPC, Anhui Conch Cement (CEM4) exhibits superior mechanical and shielding performance, with compressive strength reaching 52.5 MPa, μ⁶⁰Co = 0.11029 cm⁻¹, and μ¹³⁷Cs = 0.15022 cm⁻¹. Notably, CEM4 exhibits the highest μ values, followed by Huaxin Conch Cement (CEM5). In contrast, Liuzhou Conch Cement's high ferrite Portland cement (HFPC1) is unsuitable for neutron shielding applications. The findings of this research will provide a reference for the choice of cement in radiation shielding applications.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"114 ","pages":"Article 114322"},"PeriodicalIF":7.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270885","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}