Journal of Sustainable Cement-Based Materials最新文献

{"title":"Substitution of cement by marine clay in spray-based 3D concrete printing","authors":"Bing Lu, Ziyang Li, Mingyang Li, Jianhang Feng, Teck Neng Wong, Shunzhi Qian","doi":"10.1080/21650373.2023.2278754","DOIUrl":"https://doi.org/10.1080/21650373.2023.2278754","url":null,"abstract":"AbstractSpray-based 3D concrete printing (S-3DCP) is a type of 3D concrete printing specifically for automated constructions on vertical and overhanging surfaces, e.g. facades and ceilings. In this study, cement is partially substituted by calcined marine clay to develop a high-performance mixture for S-3DCP. Through setting, rheological, and tack tests, the fresh properties of the mixtures with marine clays calcined after different temperatures have been assessed. Considering pumping and deposition performance, tackiness, and sustainability, the optimum calcination temperature of marine clay is determined as 700 °C. The subsequent spray-based printing test shows that compared with the mixture without marine clay, the mixture with the marine clay calcined at 700 °C has a more uniform thickness distribution and 185% higher building capacity. The study contributes to the deeper understanding of the rheological and tack properties of the mixtures with calcined marine clay, which guides the future utilization of marine clay.Keywords: Spray-based 3D concrete printingcementitious materialmarine clayrheological propertytackiness Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe raw/processed data will be made available on reasonable request.AcknowledgmentsThe authors would like to acknowledge the Center for High Field NMR Spectroscopy and Imaging, Nanyang Technological University for the facility of Bruker AVANCE III HD 600 MHz (14.1 T) wide-bore spectrometer. The authors would also like to thank Mr. Hongliang Li for his valuable suggestions and Dr. Zhixin Liu for his assistance in spray-based 3D printing experiments.Additional informationFundingThis research is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme, CES_SDC Pte Ltd, and Chip Eng Seng Corporation Ltd.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"38 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 seawater dry-wet cycling on the durability of concrete repair materials","authors":"Yunqing He, Yuanbei Li, Jiannan Jia, Qiang Xu, Kui He","doi":"10.1080/21650373.2023.2279288","DOIUrl":"https://doi.org/10.1080/21650373.2023.2279288","url":null,"abstract":"","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":" 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards enhancing the durability of seawater coral aggregate concrete under drying-wetting cycles with slag-based geopolymers","authors":"Bai Zhang, Hui Peng, Teng Xiong, Hong Zhu","doi":"10.1080/21650373.2023.2278846","DOIUrl":"https://doi.org/10.1080/21650373.2023.2278846","url":null,"abstract":"AbstractThe utilization of marine resources (e.g. seawater, coral sand or sea sand, and coral coarse aggregate) for the preparation of seawater coral aggregate concrete (CAC) in reef or island areas contributes to the decreased construction periods and costs for offshore projects. Nevertheless, the high porosity and brittleness of coral aggregates affect the mechanical characteristics and durability of CAC and its structures. In this study, slag-based geopolymers were utilized as substitutes for ordinary Portland cement for preparing geopolymer-based seawater coral aggregate concrete (GPCAC). The mechanical properties of GPCAC and CAC under seawater drying-wetting cycles were explored, and their degradation mechanisms in terms of mechanical characteristics were estimated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results pointed out that GPCAC exhibited better resistance to seawater attack than CAC after being subjected to seawater drying-wetting cycle environments. When subjected to 60 °C seawater corrosion in drying-wetting cycles for 12 months, the cubic compressive strength, elastic modulus, and axial compressive strength of CAC degraded by 14.4%, 13.0%, and 16.9%, respectively, while those of GPCAC only reduced by 5.4%, 11.8%, and 3.1%, respectively. It is concluded that the excellent pore structure, dense microstructure, and stabilized hydration products of geopolymers are responsible for their superior resistance to seawater attack compared to cement-based materials.Keywords: Mechanical propertiescoral aggregate concrete (CAC)geopolymersdurabilitydrying-wetting cycles Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was granted by the Key Disciplinary of Civil Engineering of Changsha University of Science and Technology (Grant No. 23ZDXK17).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"105 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135540068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of novel ultra-high-performance lightweight concrete modified with dehydrated cement powder and aerogel","authors":"Ahmed Ali A. Shohan, Osama Zaid, Mohamed M. Arbili, Saleh Hamed Alsulamy, Wafeek Mohamed Ibrahim","doi":"10.1080/21650373.2023.2278134","DOIUrl":"https://doi.org/10.1080/21650373.2023.2278134","url":null,"abstract":"AbstractCurrently, researchers emphasize creating eco-friendly, ultra-high-performance lightweight concrete (UHPLC) due to the extensive cement demand of ultra-high-performance concrete. This study aimed to develop such UHPLC by incorporating dehydrated cement powder (DCP) and aerogel (AG) at varying levels (5-25%) alongside double-hooked end steel fibers (DHE-SFs). Objectives were to enhance strength, durability, density, and thermal/acoustic properties. Results revealed reduced flowability with higher DCP and AG content. 5%, 10%, and 15% DCP and AG improved compressive strength (17.3%) via better packing and bond formation. Density decreased up to 8.3% with more DCP and AG. Modified mixtures resisted sulfate attack and exhibited increased compressive strength retention. Shrinkage reduced to 958 µ with more DCP and AG, notably in M6-DCP25-AG25. Thermal stability improved with only 75.4% mass loss at 1000 °C, while thermal conductivity decreased to 0.274 W/m·°C. Sound absorption and pore volume increased in modified mixes. X-ray diffraction analysis showed higher crystalline phases with increased DCP and AG.Keywords: thermal analysisacousticspore structureshrinkageporosity AcknowledgementsThe authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through a large group Research Project under grant number RGP2/351/44.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe data are available from the corresponding author upon request.Ethical approvalAll authors approve that the research was performed under all the ethical norms.Consent to publishAll authors consent to publish this paper.Additional informationFundingThe authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through a large group Research Project under grant number RGP2/351/44.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"55 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135725835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cement-based materials incorporated with polyethylene glycol/sepiolite composite phase change materials: hydration, mechanical, and thermal properties","authors":"Jinyang Jiang, Siyi Ju, Fengjuan Wang, Liguo Wang, Jinyan Shi, Zhiyong Liu, Zhongyi Xin","doi":"10.1080/21650373.2023.2269391","DOIUrl":"https://doi.org/10.1080/21650373.2023.2269391","url":null,"abstract":"AbstractIn this study, a series of polyethylene glycol (PEG)/hydrochloric acid-modified sepiolite (HSEP) composite phase change materials (PCMs) are fabricated via vacuum impregnation. HSEP exhibits high adsorption capacity, rendering it superior to natural sepiolite as carriers for PEG. The resulting composite PCMs possess a melting enthalpy of up to 88.9 J/g and maintain stable thermal performances and chemical structures over 100 heating–cooling cycles between room temperature and 65 °C, thus, indicating long-term reliability. Calorimetry studies on cement paste containing 30% composite PCMs reveal a 24.14% reduction in 3-day cumulative hydration heat. However, the mechanical strength and thermal conductivity of the cement paste are adversely affected. Hence, carbon fibers (CFs) are introduced as reinforcement, resulting in a 28-day compressive strength of 45.6 MPa for cement paste containing 20% composite PCMs and 0.6% CFs. The fabricated composite PCMs are promising functional materials for hydration heat control and energy storage in concrete structures.Keywords: Sepioliteform-stable composite PCMscement-based materialshydration heatthermal energy storage Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThe authors greatly acknowledge the National Outstanding Youth Science Fund Project of the National Natural Science Foundation of China (51925903). General Program of National Natural Science Foundation of China (52108196). State Key Laboratory of High Performance Civil Engineering Materials (2020CEM001). Science and Technology Research Project of China Railway (2020YY240610, K2020G033).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136067993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the performance of alkali-activated slag/fly ash using liquid and solid activators: early-age properties and efflorescence","authors":"Jihao Gong, Yuwei Ma, Yanru Wang, Yubin Cao, Jiyang Fu, Hao Wang","doi":"10.1080/21650373.2023.2266837","DOIUrl":"https://doi.org/10.1080/21650373.2023.2266837","url":null,"abstract":"AbstractThe use of solid activators to prepare alkali-activated materials (AAM) holds great potential for on-site applications, as it eliminates the need to transport and store large quantities of concentrated alkaline solutions. This study compared the early-age properties and efflorescence between alkali-activated slag/fly ash (AASF) using solid and liquid sodium silicates as activators. The results revealed that AASF with solid sodium silicates exhibited comparable mechanical strength while possessing reduced initial setting time and flowability. All AASF mixtures were susceptible to efflorescence and carbonation, resulting in varying mineralogical compositions of carbonation products: Vaterite was detected in AASF with solid activators, while aragonite and pirssonite were identified in AASF with liquid activators containing 4 and 6 wt.% Na2O, respectively. The efflorescence of AASF exposed to bottom water was more severe than those exposed to natural conditions, as evidenced by the decalcification of reaction products, migration of alkalis, and formation of crystalline carbonates.Keywords: Alkali-activated materialssodium silicatessetting timeefflorescence Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors thank the financial support from the National Natural Science Foundation of China (52078149, 52378227 and 51925802), 111 Project (No. D21021), Key Discipline of Materials Science and Engineering, Bureau of Education of Guangzhou (Grant number: 202255464).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135617660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MgO/fluid catalytic cracking (FCC) ash blends for 3D printing on vertical surfaces","authors":"Bing Lu, Huanyu Zhao, Mingyang Li, Teck Neng Wong, Shunzhi Qian","doi":"10.1080/21650373.2023.2270571","DOIUrl":"https://doi.org/10.1080/21650373.2023.2270571","url":null,"abstract":"AbstractFluid catalytic cracking (FCC) ash is a common industrial waste in the crude oil refinery process. In this study, raw FCC ash was incorporated to develop sustainable MgO/FCC ash blends for 3D printing on vertical surfaces. Rheological and tack behaviors of MgO/FCC ash blends were systematically studied, followed by the assessment of mechanical property and hydration products. On this basis, the suitable mixture for 3D printing on the vertical surfaces was determined, and its feasibility was verified with lab-scale 3D printing. Finally, the environmental impact of the developed mixture was estimated through batch leaching and composition tests. This study provides an alternative method to upcycle FCC ash as an ingredient for 3D concrete printing, which brings benefits to both the construction and oil refinery industries. Besides, the rheological, tack, and hydration investigations of the MgO/FCC ash blends guide the future design of similar mixtures with upcycled wastes.Keywords: fluid catalytic cracking (FCC)3D concrete printingsustainabilityrheologytackiness Disclosure statementThe authors declare no conflict of interest.Additional informationFundingThis research is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme, CES_SDC Pte Ltd, and Chip Eng Seng Corporation Ltd. The authors would like to thank Xiangyu Wang and Lining Wang for their assistance in the 3D printing experiment. The authors would also like to thank ECO Special Waste Management Pte. Ltd., Singapore for providing the FCC ash for this research study.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135995318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Properties of alkali-activated slag and fly ash blended sea sand concrete exposed to elevated temperature","authors":"Junhao Wang, Shutong Yang, Zhongke Sun, Sheng Wang, Yaodong Feng, Zhenhua Ren","doi":"10.1080/21650373.2023.2266815","DOIUrl":"https://doi.org/10.1080/21650373.2023.2266815","url":null,"abstract":"AbstractAlkali-activated slag and fly ash (FA)-blended seawater sea sand concrete (AASC) is a new type of concrete produced without Portland cement or river sand. The advantages of utilising industrial waste and marine resources are that they are not only eco-friendly but cost-saving. This study aimed to investigate the properties of AASC exposed to elevated temperatures. Slag and FA were activated using NaOH and water glass solutions for mixing AASC. Heating and compressive tests were conducted to analyse the thermal and compressive properties of the AASC. The results showed that the AASC with higher FA content (Type II) had fewer flaky structures and more integral interfacial transition zones than the other type of AASC (Type I) after exposure to 600 °C. Type I AASC had better mechanical performance at temperatures below 400 °C but was inferior to Type II AASC beyond 600 °C. A compressive constitutive model was proposed for AASC.Keywords: alkali-activated materialsseawater sea sand concretethermal propertiescompressive propertieselevated temperature Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors gratefully acknowledge the support received from the National Natural Science Foundation of China (Grant No. 52178259), the Major Program of the Natural Science Foundation of Shandong Province (Grant No. ZR2020KA001), Special Project of Science and Technology Benefiting the People of Qingdao (Grant No. 21-1-4-sf-18-nsh), and Technical Service Project by Qingjian Group Co., Ltd. (Grant No. 20220149).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135765923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a comprehensive prediction model for the compressive strength of slag-based alkali-activated concrete","authors":"Alireza Jafari, Vahab Toufigh","doi":"10.1080/21650373.2023.2266442","DOIUrl":"https://doi.org/10.1080/21650373.2023.2266442","url":null,"abstract":"AbstractThis study aims to evaluate the effects of mix design parameters of ambient-cured slag-based alkali-activated concrete (GAAC) and develop a prediction model for its compressive strength (CS) by emphasizing the chemical compositions of alkaline solutions. A test setup including 625 specimens, in 125 mixes, was designed. A comprehensive parametric study and statistical evaluation were performed. Findings revealed the effectiveness of Na2O, SiO2, H2O, and GGBFS contents compared to the dosage of alkaline solutions and highlighted their disadvantages. The results also discovered the efficiency of the Bayesian linear regression in the simulation compared to the artificial neural network. Two models for estimating the CS of GAAC with reasonable accuracy were also proposed. Carbon footprint evaluation revealed that the carbon dioxide reduction of substituting ordinary concrete with GAAC depended on the desired properties of the concrete and was equal to 33% for grade 35 MPa concrete.Keywords: Alkali-activated concreteprediction modelcompressive strengthparametric studystatistical evaluationMachine learning Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementSome or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.Notes1 The difference in H2O and water in the mixtures is due to the water-sodium hydroxide flakes reaction in SH. (2NaOH+H2O→Na2O+2H2O).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135800510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of rice husk ash-derived alkali activator in fresh, mechanical, and microstructure properties of geopolymer mortar at ambient temperature curing","authors":"Shaswat Kumar Das, Niranjan Behera, Sanjaya Kumar Patro, Syed Mohammed Mustakim, Yuya Suda, Nordine Leklou","doi":"10.1080/21650373.2023.2262465","DOIUrl":"https://doi.org/10.1080/21650373.2023.2262465","url":null,"abstract":"AbstractConventional geopolymers are proven to be eco-friendly compared to Portland cement-based concrete (PC). However, the used alkali activator, i.e. sodium silicate is associated with high carbon emission and cost, making the geopolymers not really a sustainable alternative to PC. This experimental investigation was carried out to understand the potential of rice husk ash (RHA)-based alkali activator in the synthesis of fly ash-blast furnace slag (FA-GGBFS)-based geopolymers at ambient temperature. Three different concentrations of sodium hydroxide (by wt. %) solutions, i.e. 20%, 24%, and 27%, were used to synthesize an RHA-based alkali activator. A commercial-grade sodium silicate solution was used to compare the results of geopolymer mortars (GPM) with the prepared RHA-based alkali activator. Fresh, mechanical, and microstructural investigations were carried out for both the RHA and commercial-grade alkali activator-based FA-GGBFS GPM specimens. The compressive strength of RHA-based optimum GPM was found to be 41 MPa at 28 days of the curing period, which was close to the control sample made with the commercial activator; similar observations were found for the flow table test. Microstructural investigation (XRD and SEM) confirmed that the GPM prepared with the RHA-based alkali activator has a similar microstructure as the GPM with the commercial-grade alkali activator.Keywords: Geopolymeralkali-activated materialsrice husk ashalternative alkali activatormicrostructure and mechanical properties Authors’ contributionsS.K. Das: Conceptualization, Formal analysis, Visualization, Investigation, Writing—original draft preparation, Writing—review and editing, and Supervision; N. Behera: Investigation, Methodology, Formal analysis, Writing—original draft preparation; S.K. Patro: Conceptualization, Visualization, Supervision, and Writing—review and editing; S.M. Mustakim: Resources, Writing—review and editing; Y. Suda: Formal analysis, Writing—review and editing; N. Leklou: Validation and Writing—review and editing.AcknowledgmentsThe authors acknowledge the experimental support of CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, India, for this research. The authors also thank Mr. Manoj Nayak and Mr. Pradyumna Kumar Sahu of the Department of Civil Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, India, for their help during the experimental investigation. Grøn Tek Concrete and Research, Bhubaneswar, India, is also acknowledged for the support provided during this research.Disclosure statementNo potential conflict of interest was reported by the authors.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136012931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}