Cement & concrete composites最新文献

{"title":"Investigation of tensile cracking characteristics of high strength and toughness ECC(HST-ECC) and CFRP reinforced HST-ECC","authors":"Liyang Wang,&nbsp;Zongcai Deng","doi":"10.1016/j.cemconcomp.2025.106004","DOIUrl":"10.1016/j.cemconcomp.2025.106004","url":null,"abstract":"<div><div>To improve the tensile properties of Textile-Reinforced-Engineered-Cementitious-Composites (TR-ECC) and textile utilization efficiency, this study prepared a High-Strength and Toughness-Engineered-Cementitious-Composite (HST-ECC) with excellent compressive and tensile properties through strategic fiber hybridization and cementitious matrix design. Its compressive strength was 160–191 MPa, peak tensile strain was 4.21–9.76 %, tensile strength was 7.61–13.46 MPa, and the maximum crack width corresponding to the peak tensile strain was 70.77–86.16 μm. Building on this foundation, the tensile behavior of Carbon-Fiber-Reinforced-Polymer (CFRP) grid-reinforced HST-ECC (TR-HSTECC) was systematically investigated. Experimental results demonstrate the HST-ECC with textile can be work synergistically. Compared with the HST-ECC without textile, the tensile strength of TR-HSTECC with 3 layers of textile was increased by 194 %, and the peak tensile strain was increased by 118 %, however, the peak tensile strain and the number of cracks were reduced compared with that of the 2 layers of textile. A TR-HSTECC quadrilinear model was proposed, which accurately characterizes the stress-strain curves and strain-hardening at different tensile stages of TR-HSTECC. Additionally, a probability statistical model describing the distribution of cracks width in the tensile process of HST-ECC was established. This model exhibits strong consistency with experimental data and enables an accurate assessment of crack width probability distribution regularity across various tensile loading stages in HST-ECC.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 106004"},"PeriodicalIF":10.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consistency of water film thickness in UHPFRC matrix with various mixture proportions and constituents","authors":"Xiujiang Shen,&nbsp;Hadi Kazemi Kamyab","doi":"10.1016/j.cemconcomp.2025.106005","DOIUrl":"10.1016/j.cemconcomp.2025.106005","url":null,"abstract":"<div><div>The water film thickness (WFT) concept, critical for understanding workability and mechanical properties in cementitious materials, has been investigated for traditional materials but remains rarely explored in ultra high performance fiber reinforced cementitious composites (UHPFRC) system. This study aims to address this gap by systematically investigating the consistency of WFT across various UHPFRC mix designs, while ensuring high mechanical properties. A series of UHPFRC matrices were designed using modified Andreasen and Andersen (MAA) packing model. A modified wet packing method based on the mixer power measurement was utilized to accurately determine the maximum packing density (<span><math><mrow><msub><mi>Φ</mi><mi>max</mi></msub></mrow></math></span>) and average WFT (<span><math><mrow><mover><msub><mi>δ</mi><mi>w</mi></msub><mo>‾</mo></mover></mrow></math></span>) for each mix. Experimental evaluations included varying superplasticizer (SP) dosages, binder-to-total solid particle ratios (B/S), and supplementary cementitious materials (SCMs). Results revealed that increasing SP dosage reduced WFT and enhanced compressive and flexural strength up to an optimal SP/B of 0.50 %. Beyond this point, WFT stabilized (2.06 nm–3.61 nm). The stability of WFT was confirmed for mixes with varying B/S ratios (0.65–0.90) and SCM types, with values consistently ranging between 2.04 nm and 5.48 nm. The MAA packing model was validated, with a strong correlation between MAA index (<span><math><mrow><msup><mi>R</mi><mn>2</mn></msup></mrow></math></span> ≥0.95) and enhanced mechanical properties. This study demonstrates the robustness of WFT as a parameter for governing UHPFRC workability and provides a framework for optimizing mix designs for superior performance (<span><math><mrow><msub><mi>Φ</mi><mi>max</mi></msub><mo>≥</mo><mn>0.78</mn></mrow></math></span>, <span><math><mrow><msub><mi>f</mi><mrow><mi>U</mi><mi>c</mi></mrow></msub><mo>≥</mo><mn>110</mn><mspace></mspace><mi>M</mi><mi>P</mi><mi>a</mi></mrow></math></span> and <span><math><mrow><msub><mi>f</mi><mrow><mi>U</mi><mi>f</mi><mi>t</mi></mrow></msub><mo>≥</mo><mn>12</mn><mspace></mspace><mi>M</mi><mi>P</mi><mi>a</mi></mrow></math></span> at 7d). Recommendations for future research include investigating the influence of fibers (volume, type) on the wet packing density and the WFT concept in UHPFRC system.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 106005"},"PeriodicalIF":10.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of copper-coated carbon fiber on the electromechanical and chloride extraction properties of cement-based anode materials","authors":"Penggang Wang ,&nbsp;Weichao Li ,&nbsp;Hua Fu ,&nbsp;Haitao Zhao ,&nbsp;Chuansheng Xiong ,&nbsp;Tao Liu ,&nbsp;Chenglong Li","doi":"10.1016/j.cemconcomp.2025.106006","DOIUrl":"10.1016/j.cemconcomp.2025.106006","url":null,"abstract":"<div><div>This study addressed the critical issue of ionic erosion in reinforced concrete structures exposed to coastal environments by developing a novel conductive cementitious anode material for chloride extraction, thereby enhancing steel reinforcement protection. The research focused on the preparation of copper-coated carbon fiber (PDA-CF-Cu) utilizing polydopamine (PDA) as an intermediary, coupled with electrochemical deposition for surface metallization of carbon fibers (CF). A multifunctional new type of conductive cementitious anode material was prepared.The microstructure and elemental changes of CF and PDA-CF-Cu were investigated. The effects of CF and PDA-CF-Cu on the electrical conductivity, piezoresistance and chloride extraction properties of cement-based anode materials at different doses were also investigated.The microstructure showed that the material deposited on the CF surface was dominated by Cu with fewer copper oxides. The introduction of PDA significantly enhanced the adhesion of the metal coating to the CF surface, where the bond strength of PDA-CF-Cu increased by 17 times. The best quality of the plated layer was achieved at coating parameters of 1V - 1h. The electrical conductivity of PDA-CF-Cu increased by a factor of 26 compared to CF. The conductive mortar containing PDA-CF-Cu exhibited higher piezoresistive stability and sensitivity compared to CF conductive mortar. At 28 d, the conductivities of 0.2 wt%, 0.4 wt%, and 0.6 wt% doping increased by 653.64 %, 172.74 %, and 25.34 %, respectively. In addition, the PDA-CF-Cu conductive mortar exhibited better chloride extraction efficiency. The chloride extraction efficiency of PDA-CF-Cu conductive mortar exhibited enhancements of 8.63 % and 14.36 % for the respective fiber dosages of 0.2 wt% and 0.4 wt%.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 106006"},"PeriodicalIF":10.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 and analysis of electrothermal, thermoelectric, and current discharge properties of alkali-activated materials: Implications for energy conversion","authors":"Xingyu Qu ,&nbsp;Tong Guo ,&nbsp;Jingming Cai ,&nbsp;Yang Hu ,&nbsp;Bo-Tao Huang ,&nbsp;Tianyu Xie","doi":"10.1016/j.cemconcomp.2025.105987","DOIUrl":"10.1016/j.cemconcomp.2025.105987","url":null,"abstract":"<div><div>Alkali-activated mortar (AAM) show promising potential for net-zero energy buildings due to their excellent electrical conductivity. This study investigates the multifunctional properties of AAM for energy conversion applications, examining the influence of conductive fillers and additives on AAM's mechanical and electrical properties, the effects of curing age, moisture content, temperature, and applied load on AAM's resistivity, and exploring its electrothermal, thermoelectric, and current discharge properties. Key findings reveal that conductive fillers and additives enhance AAM's conductivity but decrease the mechanical properties, while an equivalent circuit diagram accurately describes AAM's electrochemical impedance spectroscopy. AAM's resistivity increases with curing age and moisture loss but decreases with rising temperature and applied load. The material demonstrates stable and efficient electrical-to-thermal energy conversion across various voltages, with plain AAM exhibiting a superior Seebeck coefficient of 1353 μV/°C, outperforming OPC-based systems in thermoelectric properties. Notably, an Al-AAM-Cu battery maintains a current density above 2 mA/m² for 79 h, meeting ISO standards for impressed current cathodic protection of steel reinforcement in concrete structures. These results highlight AAM's potential as a multifunctional material for energy harvesting, storage, and corrosion protection in sustainable construction applications, paving the way for innovative solutions in energy-efficient building design.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 105987"},"PeriodicalIF":10.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mix proportion design of phosphoric acid-activated cementitious materials and microstructure evolution at high temperature","authors":"Linhui Meng ,&nbsp;Fuchang Ouyang ,&nbsp;Jiaxin Cheng ,&nbsp;Ziming Wang ,&nbsp;Bingqian Li ,&nbsp;Xi Xu ,&nbsp;Ping Duan ,&nbsp;Yingcan Zhu ,&nbsp;Zuhua Zhang ,&nbsp;Ming Chen ,&nbsp;Wentao Huang","doi":"10.1016/j.cemconcomp.2025.106003","DOIUrl":"10.1016/j.cemconcomp.2025.106003","url":null,"abstract":"<div><div>To clarify the polymerization mechanism and high-temperature resistance of acid-activated cementitious materials. In this study, metakaolin was used as precursor, phosphoric acid solution served as the activator, and 0–6% of magnesia was incorporated to prepare acid-activated cementitious materials. The effects of P/Al (molar ratio of phosphorus to aluminum), L/S (mass ratio of activator to raw material) and magnesia dosage (W_MgO) on the mechanical properties and high temperature resistance of acid-activated cementitious materials were investigated. This study elucidated the effects, mechanism and microstructure evolution associated with phosphoric acid activation. The optimal formulation of the acid-activated cementitious material is characterized by a P/Al ratio of 0.8, an L/S ratio of 0.9, and a W_MgO of 4 %. Under these conditions, the compressive strength at 28 d can reach 101 MPa. Metakaolin is depolymerized in an acidic environment provided by phosphoric acid to produce oligomeric silicon and Al³⁺, which then undergo a polycondensation bonding process with PO₄³⁻ to form an amorphous gel. Magnesia reacts with phosphoric acid to form MgHPO₄ 3H₂O, which then adheres to the dealuminated silica layer of metakaolin to form an acid-activated cementitious material. After calcination at 1200 °C, the acid-activated cementitious material with a P/Al ratio of 0.6 and an L/S ratio of 0.9, and without magnesia, exhibited the best performance, with a residual strength of 39.7 MPa.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 106003"},"PeriodicalIF":10.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous biochar-assisted aqueous carbonation of steel slag as an adsorptive crystallization modifier for value-added cement applications","authors":"Linshan Li ,&nbsp;Yi Jiang ,&nbsp;Tiefeng Chen ,&nbsp;Xiaojian Gao","doi":"10.1016/j.cemconcomp.2025.106002","DOIUrl":"10.1016/j.cemconcomp.2025.106002","url":null,"abstract":"<div><div>Carbonated steel slag shows promise as a supplementary cementitious material. However, prolonged carbonation forms a dense CaCO₃ layer, limiting carbonation efficiency and hydration activity, while uneven CaCO₃ accumulation limits its performance in cement. This study introduces biochar as a nucleating agent to enhance the carbonation and hydration activity of steel slag. Results show that biochar, particularly rice husk biochar, effectively promotes CO₂ capture (38.1 % increase) and improves mechanical properties (33.4 % improvement) by optimizing microstructure and carbonation efficiency. Reed biochar's fibrous structure optimized CaCO₃ packing best, while bamboo biochar accelerated slag hydration, raising cumulative hydration heat by 1.8 % and C-S-H gel content by 86.7 %. Results confirm that biochar's abundant active nucleation sites, functional groups, and diffuse porosity greatly promote CaCO₃ crystal growth while preventing excessive surface accumulation, enabling the filling and nucleation effects of CaCO₃ to be fully realized in cement system. These findings highlight biochar's potential as a cost-effective modifier for sustainable cementitious applications.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 106002"},"PeriodicalIF":10.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 nano-alumina and triisopropanolamine in Portland limestone cements with various sulfate levels","authors":"Sungwon Sim ,&nbsp;Heongwon Suh ,&nbsp;Seongmin Cho ,&nbsp;Sumin Im ,&nbsp;Jaeyeon Park ,&nbsp;Junxing Liu ,&nbsp;Sungchul Bae","doi":"10.1016/j.cemconcomp.2025.105994","DOIUrl":"10.1016/j.cemconcomp.2025.105994","url":null,"abstract":"<div><div>This study evaluated the synergistic effects of nano-alumina and triisopropanolamine (TIPA) on the physicochemical properties of Portland limestone cement (PLC) with varying gypsum contents. The incorporation of nano-alumina and TIPA into PLC pastes with 3 and 9 wt % of gypsum resulted in increased heat release during the initial dissolution period and total heat release of cement hydration, and significantly enhanced the silicate and aluminate reactions. In addition, their combined use significantly improved the compressive strength of the PLC pastes, produced denser microstructures with lower porosities, and altered the pore shapes in the pastes. The synergistic advantages are likely related to the role of nano-alumina as a reactive filler and the use of TIPA that enhances the reactivity of the clinker phases.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 105994"},"PeriodicalIF":10.8,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the rate-dependent cracking resistance of UHPC under mixed tensile-shear mode by calcined bauxite aggregate","authors":"Shaohua Li ,&nbsp;Ole Mejlhede Jensen ,&nbsp;Qingliang Yu","doi":"10.1016/j.cemconcomp.2025.105993","DOIUrl":"10.1016/j.cemconcomp.2025.105993","url":null,"abstract":"<div><div>Calcined bauxite (CB) aggregate, characterized by porous microstructure and strong micromechanical property, has potential to mitigate macroscopic mechanical degradation of Ultra-high Performance Concrete (UHPC) from autogenous shrinkage microcracks. However, the rate-dependent cracking resistance of UHPC containing CB (UHPC-CB) under mixed-mode loading condition is not clear. Herein, the enhancing mechanism of CB upon rate-dependent cracking resistance of UHPC under mixed-mode loading is clarified from a multi-scale perspective. The results indicate that, at the microscale, CB not only leads to shorter microcracks due to physical constraint effects, but also results in a stronger ITZ compared to UHPC containing basalt aggregate (UHPC-BA), due to an internal curing effect thanks to its porous microstructure. At the mesoscale, the denser ITZ results in a higher fracture percentage of CB and more obviously an interlock effect in the case of shear stress condition. Consequently, at the macroscale, CB not only results in higher cracking resistance, especially in the case of shear loading, but also a higher dynamic increase factor value, attributed to the heterogenous micromechanical characteristics and stronger phases in CB.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 105993"},"PeriodicalIF":10.8,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143443824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Reaction mechanisms of one-part and two-part slag-based binders activated by sodium carbonate and lime","authors":"Xiaojuan Kang,&nbsp;Zushi Tian,&nbsp;Clarence Edward Choi,&nbsp;Hailong Ye","doi":"10.1016/j.cemconcomp.2025.105992","DOIUrl":"10.1016/j.cemconcomp.2025.105992","url":null,"abstract":"<div><div>One-part alkali-activated slag (AAS) is a safer and more manageable alternative to a two-part formulation. This work compares the reaction mechanism, phase formation, microstructure and properties developments between one-part and two-part AAS pastes prepared by a combined lime (CaO) and sodium carbonate (Na₂CO₃) activator. The results show that the CaO-Na₂CO₃ combination effectively accelerates slag reaction, resulting in 3–6 times higher compressive strength in AAS than blended slag-OPC binder at 1 d. Initially, two-part AAS demonstrates a slightly greater accelerating effect due to rapid generation of a strong alkaline condition, characterized by a hydroxyl ion concentration ([OH⁻]) in pore solution that is twice that of one-part AAS. This elevated alkalinity in two-part AAS enhances early-age hydration of slag and promotes phase formation, resulting in increased strength and refined microstructure. However, after 28 d, the strength of one-part AAS approaches and even surpasses that of two-part AAS, attributed to a more stable and progressive reaction between Ca(OH)₂ and dissolving Na₂CO₃, which produces NaOH. This steady reaction maintains a stable pH and allows for the gradual release of alkalis, resulting in increased degree of hydration (DOH) of slag, mean chain length (MCL), Al/Si and Q²/Q¹ ratios of C-A-S-H, as well as enhanced Al linkage in C-A-S-H of one-part AAS. In addition, the one-part AAS activated by CaO-Na₂CO₃ demonstrates up to 93 % reduction in CO₂ emissions while maintaining comparable strength to OPC counterparts, highlighting its great potential as a green binder for sustainable construction applications.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 105992"},"PeriodicalIF":10.8,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"The role of foreign ions in Portland cement production and properties: A state-of-the-art review on phase formation, polymorphism and hydration","authors":"Ivo C. Carvalho ,&nbsp;José S. Andrade Neto ,&nbsp;Paulo R. Matos ,&nbsp;Barbara Lothenbach ,&nbsp;Ana P. Kirchheim","doi":"10.1016/j.cemconcomp.2025.105989","DOIUrl":"10.1016/j.cemconcomp.2025.105989","url":null,"abstract":"<div><div>Adopting alternative raw materials and fuels has significantly increased in the last few years. This practice introduces minor constituents (or foreign ions) into cement kilns, influencing the synthesis process and subsequent clinker/cement properties. This paper examined the impact of zinc, titanium, phosphorus, fluorine, and copper on clinker/cement characteristics, focusing on phase formation, polymorphism, and hydration behavior. These constituents often serve as mineralizers or fluxes, modifying melting temperatures and viscosity of the melt in kilns and/or altering clinker mineralogy. A general trend of hydration retardation was identified in the presence of these minor constituents, with threshold incorporation levels underlined. Gaps in the current knowledge were identified, such as the effect of foreign ions in polymorphism, especially C₃A. By synthesizing current research, this work provides valuable insights for the cement industry and the academy. Moreover, it proposes research directions to further understand the effects of co-processing and minor constituents on cement production.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"159 ","pages":"Article 105989"},"PeriodicalIF":10.8,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}