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Administrated by The Education Department of Jilin Province
Sponsored by Jilin Jianzhu University
Editor-in-Chief: CHEN Lei
Edited and Published by Editorial Department of Journal of
Jilin Jianzhu University
Address: 5088 Xincheng Street, Changchun, China
Postcode: 130118
ISSN 2095-8919
CN 22-1413/TU
Tel: +86-431-84566046
E-mail: jljzdxxb@jlju.edu.cn
Website: https//jljz.cbpt.cnki.net/portal
Study on the influence law and mechanism of red mud modified asphalt mastic on anti-aging properties
Zhang Wanguo;Wang Shilong;Zhu Shiqi;Zhang Jizhe;Guo Dong;Fan Xiuze;Hu Saijun;Gang Zixuan;To investigate the influence of red mud on the anti-aging properties of asphalt mastic and its underlying mechanisms, this study focuses on asphalt mastic as the research subject. The relationship between the dosage of sintered red mud and the anti-aging performance of asphalt was mapped using the aging index. The anti-aging mechanism of sintered red mud was revealed through Fourier transform infrared spectroscopy(FTIR) peak analysis, ultraviolet-visible absorption spectroscopy(UV-vis), and gel permeation chromatography(GPC). The results indicate that asphalt mastic modified with 4% sintered red mud exhibits the strongest resistance to thermal-oxidative aging and UV aging, with the lowest increments in softening point, viscosity aging index, and complex modulus aging index, comparable to those of commercial antiaging agents. FTIR and GPC analyses reveal that sintered red mud adsorbs the light components in asphalt, delaying the transformation of heavy components under thermal-oxidative conditions. UV-vis analysis shows that sintered red mud has a strong ability to shield ultraviolet light in asphalt mastic, thereby mitigating UV aging. Comprehensive analysis demonstrates that sintered red mud at a 4% dosage can effectively slow down the thermal-oxidative and UV aging rates of asphalt mastic, providing an effective solution to pavement aging issues.
Study on the reliability of machine learning in predicting the resilient modulus of open-pit mine subgrades
Shen Fanshun;Shi Xuyang;Zheng Chengji;Chen Shuzhao;Huang Jiandong;Deng Jishuo;A hybrid machine learning model integrating the beetle antennae search(BAS) algorithm and random forest(RF) was developed to predict the resilient modulus of open-pit mine subgrades, with the aim of improving prediction accuracy and efficiency while providing effective technical support for road design and construction. Six input variables were selected: plasticity index, dry density, confining stress, deviator stress, water content, and number of freeze-thaw cycles. A database containing 810 samples was constructed based on published literature. The hyperparameters of the RF model were optimized using the BAS algorithm, and the model performance was evaluated through 10-fold cross-validation. The root mean square error(RMSE) and the correlation coefficient(R) were used as evaluation metrics, and a sensitivity analysis of the input variables was conducted. The results demonstrated that the BAS algorithm effectively optimized the hyperparameters, and the model exhibited high prediction accuracy on both the training and test sets. Sensitivity analysis indicated that the number of freeze-thaw cycles and confining stress had the most significant influence on the resilient modulus. The proposed BAS-RF hybrid model can effectively predict the resilient modulus, offering advantages such as low overfitting risk and high computational efficiency.
Study on mechanical properties and microscopic reaction characteristics of alkali-activated slag-fly ash composite cementitious materials
Zhu Nan;Zhang Xinyu;Zhang Jing;Focused on constructing green cementitious materials using an alkali-activated slag-fly ash composite system to address the issues of high energy consumption and high carbon emissions of traditional Portland cement. By regulating the dosages of sodium silicate and sodium hydroxide, the effects of different siliconaluminum ratios(Si/Al) and sodium-aluminum ratios(Na/Al) on its unconfined compressive strength(UCS) were systematically studied. The results show that under the condition of constant Na/Al, an increase in Si/Al from 3.0 to 3.4 will lead to a significant decrease in UCS, mainly attributed to the difficulty of reaction of excessive silicon source and the decrease in gel crosslinking degree. When Si/Al is fixed, if Na/Al drops from 1.1 to 0.8, the insufficient alkalinity limits the dissolution of the aluminum source and the formation of gel, which also leads to a decrease in UCS. SEM and XRD characterizations show that under the combination of Si/Al=3.0 and Na/Al=1.1, a dense gel network of C—A—S—H and N—A—S—H can be formed, corresponding to the best mechanical properties, but accompanied by alkali effsification and dry shrinkage cracking problems. Although partially replacing the chemical alkali source with steel slag and calcium carbide slag can alleviate the efflorescence phenomenon, due to insufficient alkalinity, the 7 d UCS drops to 3.4 MPa, and the mechanical properties decline significantly. This study systematically revealed the synergistic regulatory mechanism of the geopolymer performance by Si/Al and Na/Al ratios, and explored the activation potential of alkaline solid waste, providing a theoretical basis for the optimizationof geopolymer ratios and the resource utilization of industrial solid waste.
Investigation of the anti-aging behavior of bio-oil-enhanced rejuvenated asphalt binder
Wan Guiwen;Liu Yong;Zhang Jizhe;Sun Quansheng;Wang Shilong;Liu Kun;Wei Zhaoyang;Yan Yawei;Research on rejuvenated asphalt binders has primarily focused on restoring the properties of aged asphalt, whereas investigations into the anti-aging performance of rejuvenated asphalt binders remain limited. To address this gap, three bio-oil-based rejuvenators were prepared from castor oil(CO), waste cooking oil(WCO), and soybean oil(SO), and subsequently applied to rejuvenate aged asphalt binders. At the optimum dosages, the rejuvenated asphalt binders were subjected to pressure aging(PAV), and the macro-mechanical properties together with microstructural changes before and after aging were characterized using the three major indices, viscosity, Fourier-transform infrared spectroscopy(FTIR), and gel permeation chromatography(GPC). The optimum dosages of the castor oil-based rejuvenator(COR), waste cooking oil-based rejuvenator(WCOR), and soybean oil-based rejuvenator(SOR) were determined as 5.8%, 6.7% and 7.1%, respectively. All three rejuvenators effectively restored the properties of aged asphalt binders, with COR and WCOR exhibiting better rejuvenating performance than SOR. During secondary aging, the rejuvenated asphalt binders showed significant performance deterioration accompanied by an increase in large molecular fractions. Among them, the castor oil-based rejuvenated asphalt(CORA) and soybean oil-based rejuvenated asphalt(SORA) exhibited greater declines in performance compared with the waste cooking oil based rejuvenated asphalt(WCORA).
Study on the activity of stainless steel slag and the preparation and performance of solid waste cementitious materials
Ding Rui;Sheng Yu;An Xueyan;Zhang Shiting;Li Wenfu;Addressing the issues of low activity,poor grindability,and low utilization rate of stainless steel slag(Argon oxygen decarburization,abbreviated as AOD slag) produced by the argon-oxygen decarburization process,systematically investigated the effects of physical excitation (regulating grinding time and grinding aids) and chemical excitation (adding activators) on the activity index,particle size distribution,and specific surface area of AOD slag.Based on the modified AOD slag,a low-carbon cementitious material for solid waste is prepared.Experiments show that when the AOD slag is ground for 15 minutes,its 45μm sieve residue decreases to 5.4%,and its specific surface area reaches 482 m2/kg;when the grinding aid content is 0.06%,the sieve residue further decreases to 3.52%,and the specific surface area increases to 524 m2/kg.When the cementitious material is prepared with a ratio of 20%AOD slag,48.5% slag,16%gypsum,and 15.5% CS-1 activator,after standard curing for 28 days,the flexural strength is 6.5 MPa and the compressive strength is 46.6 MPa,which are 52.3% and 49.8%higher than those of the control group K0,respectively.SEM analysis reveals that the microstructure of the mortar is denser,with hydration products C—S—H gel and AFt closely overlapping,providing support for the strength improvement.
Research on Cloud Computing Based on Virtualization Technology
LI Gang-jian(School of Computer science and Engineering Jilin Institute of Architectural and Civil Engineering,Jilin,Changchun,China 130118)In the paper,the author did research on the current trend of cloud computing technology and the cloud computing model.According to its own characteristics,a way is presented based on Hyper-v.The platform has some advantages,so that the characteristics of virtualization will come into perform well.
[Downloads: 2,341 ] [Citations: 186 ] [Reads: 155 ] HTML PDF Cite this article
The Development Status and Prospects of Diatomite
XIAO Li-guang,ZHAO Zhuang,YU Wan-zeng(School of Material Science and Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130021)Diatomaceous earth as a very abundant mineral resources,as its porosity,adsorption is strong,light,high melting point,thermal insulation,sound absorption,low refractive index,chemical stability and so on,it has a widely used in many fields.This paper describes the latest research and application of diatomite in fillers,filter aid,agriculture,construction materials and other areas.
[Downloads: 2,766 ] [Citations: 160 ] [Reads: 130 ] HTML PDF Cite this article
Iron Tailings Comprehensive Utilization at Home and Abroad
XIAO Li-guang,YI Jing-hong,CUI Zheng-xu(School of Material Science and Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130118)The mineral resource is one of the human survival and development important material bases,along with mineral resource's massive developments and the use,the ore is day by day deficient,the tailings recycling has a second world attention.This article describes the tailings and the comprehensive use of the status quo,the application of the building materials,and the proposal in the future development of tailings.
[Downloads: 2,050 ] [Citations: 155 ] [Reads: 133 ] HTML PDF Cite this article
Development of the Sludge Treatment Techniques
Wang Shiyuan (The Countryside Hygiene and Reform Water Office of Jilin Province)Cui Yubo, Wang Cuilan, Jian Zhiyuan (Department of Urban Construction)This paper simply introduced the sludge treatment techniques and its development, and presented the regulation of choosing and developing sludge treatment techniques.
Summary of Data Mining Methods
GUO Xiu-juan (Department of Computer Engineering,Jilin Architectural and Civil Engineering Institute,Changchun130021)The good methods and technologies of data mining may get excellent knowledge.This paper presents an overview on data mining methods.First,the concept of data mining is discussed.Then,this paper describes the theories and technologies on data mining,such as relational rules,decision tree,neural network,rough sets,clustering analysis,genetic algorithms,and statistics analysis.Finally,how to study data mining is forecasted.
Research Progress in Synthesis and Application of Quantum Dots
LI Hua-nan;FENG Wei;WANG Ting;Polyimide had many advantages,such as heat resistance,low temperature resistance,resistance to radiation,flame retardant,non-toxic characteristics,excellent mechanical properties,dimension stability,chemical stability and biocompatibility etc,had been widely used in aviation,aerospace,electrical,electronics,communications,buildings,cars,and other areas of the tip. In this paper,a review was given about the basic classification and main characteristics of polyimide as the core. It was summarized the polyimide synthesis method and modification of significance. Moreover,suggestions were expounded about the application progress of polyimide in many fields,and prospect the development trend of the future.
The Comparison of the French Versailles Palace and China Beijing Imperial Palace
YU Qi,MO Wei (School of Architecture and Planning,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130118)By comparing space layout,building systems,construction materials and structural,architectural decoration and color of different points for the French Versailles palace and the Beijing national palace museum in China,from macroscopical to microcosmic comparison of the two countries palace architecture,cultural of the similarities and differences between China and France is analyzed.Trying to find out the difference between eastern and western culture as the history of eastern and western architectural palaces outstanding representative of China's Beijing palace museum and the French Versailles palace,has long been regarded as the world two great cultural windows.Different cultures on the "beauty" of the pursuit are not the same.Therefore,we compared from an aesthetic point of view these two in the history of human civilization occupy a considerable proportion of the palace construction.To arouse people on architectural aesthetics thinking and a new understanding are done.
Black Humor in George Orwell’s Animal Farm
ZHAO Yu-hong(School of Foreign Language,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130021)Black humor skill is applied by George Orwell in his masterpiece Animal Farm to represent an inhumane society.The skill of irony,the implication of the characters,and fallacy will be analyzed in this article.
The Development Status and Prospects of Diatomite
XIAO Li-guang,ZHAO Zhuang,YU Wan-zeng(School of Material Science and Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130021)Diatomaceous earth as a very abundant mineral resources,as its porosity,adsorption is strong,light,high melting point,thermal insulation,sound absorption,low refractive index,chemical stability and so on,it has a widely used in many fields.This paper describes the latest research and application of diatomite in fillers,filter aid,agriculture,construction materials and other areas.
[Downloads: 2,766 ] [Citations: 160 ] [Reads: 130 ] HTML PDF Cite this article
Research on intelligent lighting control system of building based on STM32 microcontroller
XU Yong;HOU Bo-feng;WEI Li-ming;An intelligent lighting control system based on STM32 was designed,which can intelligently control the different needs of lighting environment.Firstly,to use CAN bus technology and to propose the hardware communication protocol of intelligent energy-saving lighting control system,and to design and realize the hardware subsystem of intelligent energy-saving lighting control.The CAN bus module is composed of processor STM32 and corresponding number of transceivers tja1050; Secondly,basing on BP neural network algorithm for data detection,to optimize the output illumination,and to design and implement the monitoring software subsystem of the upper computer.The intelligent lighting control system proposed in this paper provides a reference for energy saving of engineering application.
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