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学者姓名：张金喜
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摘要 ：
Asphalt pavement has excellent performance, but the asphalt binder is a temperature-sensitive material, which not only easily causes high-temperature distress, but also exacerbates the "urban heat island effect". One possible method to solve this problem is to use phase change material (PCM) in the asphalt mixture, in which polymer solid-solid phase change material (PSSPCM) is one of widely used PCM. If the PSSPCM can be used in highviscosity modified asphalt (HVMA), the high-performance modified asphalt with temperature regulation function can be obtained. However, the morphology of PSSPCM may change under the high mixing temperature of HVMA, which may also influence the properties of PSSPCM/HVMA composite. This paper selected one typical PSSPCM to investigate the morphology changes of solid-solid phase change material in HVMA and its influence on the properties of HVMA. The change of morphological and thermal property of PSSPCM in the hightemperature preparation were characterized by scanning calorimeter tests, thermogravimetric tests and heating tests, the physical, rheological and temperature regulation properties of PSSPCM/HVMA were also investigated. Test result shows that, the PSSPCM melted in HVMA at high mixing temperatures condition. However, when added in smaller contents of PSSPCM, the melted PSSPCM could uniformly distribute in the HVMA and the polymer network structure was formed. The melted and distributed PSSPCM in HVMA still had favorable temperature regulation function. The temperature regulation range of PSSPCM during the heating process and cooling process is maximum 3.8 degrees C and 2.9 degrees C respectively. Notably, the PSSPCM/HVMA has great hightemperature properties and favorable low-temperature properties. This study has reference value for developing the high-performance modified asphalt with temperature regulation function.
关键词 ：
Polymer solid -solid phase change material Polymer solid -solid phase change material High -viscosity modified asphalt High -viscosity modified asphalt Morphology change Morphology change Asphalt Asphalt Melted Melted Temperature regulation function Temperature regulation function
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| GB/T 7714 | Dong, Zizhen , Zhang, Jinxi , Sun, Guoqiang et al. Morphology changes of polymer solid-solid phase change material in high-viscosity modified asphalt (HVMA) and its influence on the properties of HVMA [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 39 . |
| MLA | Dong, Zizhen et al. "Morphology changes of polymer solid-solid phase change material in high-viscosity modified asphalt (HVMA) and its influence on the properties of HVMA" . | MATERIALS TODAY COMMUNICATIONS 39 (2024) . |
| APA | Dong, Zizhen , Zhang, Jinxi , Sun, Guoqiang , Yang, Duowang , Wang, Jincheng . Morphology changes of polymer solid-solid phase change material in high-viscosity modified asphalt (HVMA) and its influence on the properties of HVMA . | MATERIALS TODAY COMMUNICATIONS , 2024 , 39 . |
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摘要 ：
In this study, the compatibility of phase change material(PCM) in asphalt was investigated using several methods. Initially, solubility parameters, radial distribution functions, and relative concentrations of PCM modified asphalt were examined through molecular simulations to explore its compatibility. Subsequently, the phase structures of different PCM modified asphalt were analyzed using fluorescence microscopy experiments on both upper and lower samples. Finally, the compatibility differences among PCM modified asphalt samples with varying naphthenic oil contents were evaluated through softening point and Brookfield viscosity tests. The results indicate that higher naphthenic oil content in encapsulated PCM leads to closer solubility parameter alignment with the base asphalt. At a naphthenic oil content of 50 % in encapsulated PCM, significant interactions occur between PCM and asphalt components. The concentration distribution curve of PCM molecules in the asphalt approaches 1.0, indicating excellent compatibility between encapsulated PCM and asphalt. Overall, the results from fluorescence microscopy and conventional tests are consistent with simulation outcomes. The only discrepancy observed is that conventional experimental results for the PCM-60 % sample slightly outperform those for the PCM-50 % sample.
关键词 ：
Morphology Morphology Multi-scale evaluation Multi-scale evaluation Molecular simulation Molecular simulation Compatibility Compatibility Naphthenic oil Naphthenic oil PCM modified asphalt PCM modified asphalt
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| GB/T 7714 | Wang, Jincheng , Zhang, Jinxi , Dong, Zizhen et al. Compatibility of PCM modified asphalt based on naphthenic oil modification: A multiscale study [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 426 . |
| MLA | Wang, Jincheng et al. "Compatibility of PCM modified asphalt based on naphthenic oil modification: A multiscale study" . | CONSTRUCTION AND BUILDING MATERIALS 426 (2024) . |
| APA | Wang, Jincheng , Zhang, Jinxi , Dong, Zizhen , Wang, Yangyang . Compatibility of PCM modified asphalt based on naphthenic oil modification: A multiscale study . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 426 . |
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摘要 ：
To achieve environmental sustainability and improve material characteristics, this study examines the performance of self-compacting concrete (SCC) that incorporates different industrial by-products, including fly ash (FA), coal gangue powder (CGP), cement kiln dust (CKD), and recycled concrete powder (RCP). Through an experimental program, the research evaluates the fresh and hardened properties of SCC as well as its micro- structural features. Slump flow, T50, and V-funnel tests were utilized to evaluate the fresh characteristics, while the compressive strength was the main emphasis of the hardened property at 7, 14, and 28 days of curing periods. To clarify the internal structure of the material and the pozzolanic processes taking place therein, further microstructural investigations were carried out using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Due to pozzolanic reactions and the densification of the microstructure, the results show that adding these industrial by-products not only makes SCC more workable but also gradually increases its compressive strength. In particular, the study shows that combinations with FA, CKD, and RCP perform better than CGP in terms of flowability and strength development. The results highlight the technical advantages of improving concrete qualities through material innovation, in addition to the possible environmental benefits of recycling waste materials in construction.
关键词 ：
analysis analysis Compressive strength and Microstructure Compressive strength and Microstructure Filling and Passing ability Filling and Passing ability Coal gangue Powder Coal gangue Powder Cement kiln dust Cement kiln dust Fly ash Fly ash Recycled concrete powder Recycled concrete powder Self Compacting Concrete Self Compacting Concrete
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| GB/T 7714 | Murtaza, Muhammad , Zhang, Jinxi , Yang, Ce et al. Performance analysis of self compacting concrete by incorporating fly ash, coal gangue powder, cement kiln dust and recycled concrete powder by absolute volume method [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 431 . |
| MLA | Murtaza, Muhammad et al. "Performance analysis of self compacting concrete by incorporating fly ash, coal gangue powder, cement kiln dust and recycled concrete powder by absolute volume method" . | CONSTRUCTION AND BUILDING MATERIALS 431 (2024) . |
| APA | Murtaza, Muhammad , Zhang, Jinxi , Yang, Ce , Cui, Xuhao , Su, Ci , Ramadan, Ahmed Nabil . Performance analysis of self compacting concrete by incorporating fly ash, coal gangue powder, cement kiln dust and recycled concrete powder by absolute volume method . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 431 . |
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摘要 ：
本发明公开了一种含相变材料的相变雾封层材料及其制备方法和应用，S1、将乳化沥青10‑100份和水25‑35份在室温下混合，200r/min搅拌1‑10min得到混合物；S2、向S1中的混合物中加入抗滑颗粒25‑35份和相变材料5‑15份，搅拌1‑10min，得到相变雾封层材料。本发明采用上述配方的一种含相变材料的相变雾封层材料及其制备方法和应用，不仅能够修补路面微小裂缝，避免路面结构产生水损害，同时，利用相变材料自调温的功能降低路面温度，减少路面高温病害，提高沥青路面使用寿命，可以减轻城市热岛效应起到环境保护的作用。
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| GB/T 7714 | 高林峰 , 董子震 , 张金喜 . 一种含相变材料的相变雾封层材料及其制备方法和应用 : CN202310248989.7[P]. | 2023-03-15 . |
| MLA | 高林峰 et al. "一种含相变材料的相变雾封层材料及其制备方法和应用" : CN202310248989.7. | 2023-03-15 . |
| APA | 高林峰 , 董子震 , 张金喜 . 一种含相变材料的相变雾封层材料及其制备方法和应用 : CN202310248989.7. | 2023-03-15 . |
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摘要 ：
本发明提供了一种含红砖建筑垃圾全再生半刚性道路基层材料，按照质量份数计，由包括以下组分的原料制备得到：再生骨料80～99份，胶结料2～19份；所述再生骨料由含红砖建筑垃圾制备得到粗骨料和细骨料组成；所述粗骨料的粒径为4.75～33mm；所述细骨料的粒径＜4.75mm；所述胶结料为水泥或者由粉煤灰和石灰组成。本发明提供的含红砖建筑垃圾全再生半刚性道路基层材料，采用含红砖建筑垃圾生产的再生骨料作为原料，有效的消纳了低品质的含红砖建筑垃圾，并且省略使用天然砂石，减少了不可再生资源天然砂石的开采量，起到了环境保护与资源节约的作用。
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| GB/T 7714 | 张硕 , 苏词 , 张金喜 . 一种含红砖建筑垃圾全再生半刚性道路基层材料及其制备方法和应用 : CN202310241588.9[P]. | 2023-03-14 . |
| MLA | 张硕 et al. "一种含红砖建筑垃圾全再生半刚性道路基层材料及其制备方法和应用" : CN202310241588.9. | 2023-03-14 . |
| APA | 张硕 , 苏词 , 张金喜 . 一种含红砖建筑垃圾全再生半刚性道路基层材料及其制备方法和应用 : CN202310241588.9. | 2023-03-14 . |
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摘要 ：
The bottom-up crack (BUC), one kind of reflective crack that initiates at the bottom of asphalt layer and prop-agates upwards, has become one of the major distresses of asphalt pavement. The Mode I dominated bilinear cohesive zone model (CZM) after calibration was introduced into finite element (FE) model to simulate the BUC propagation in asphalt pavement under displacement load. The mechanism of crack propagation under different types of periodic load was analyzed based on two indexes from Mode I dominated bilinear CZM. The FE model and corresponding periodic load were modified to limit the occurrence of top-down crack propagation. A combined method based on the developed model was adopted to predict the BUC propagation velocity at varied heights and the remaining life of pavement. The results showed that the acceleration of BUC propagation decreased with the crack tip height. Moreover, the predicted remaining life of pavement based on the proposed method was reasonable referring to the engineering design specifications.
关键词 ：
Bottom -up crack Bottom -up crack Asphalt pavement Asphalt pavement Mode I dominated bilinear CZM Mode I dominated bilinear CZM Periodic Load Periodic Load Remaining life prediction Remaining life prediction
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| GB/T 7714 | Zhang, Jia , Zhang, Jinxi , Cao, Dandan et al. Mechanistic analysis of bottom-up crack in asphalt pavement using cohesive zone model [J]. | THEORETICAL AND APPLIED FRACTURE MECHANICS , 2023 , 125 . |
| MLA | Zhang, Jia et al. "Mechanistic analysis of bottom-up crack in asphalt pavement using cohesive zone model" . | THEORETICAL AND APPLIED FRACTURE MECHANICS 125 (2023) . |
| APA | Zhang, Jia , Zhang, Jinxi , Cao, Dandan , Ding, Yongjie , Zhou, Weiqi . Mechanistic analysis of bottom-up crack in asphalt pavement using cohesive zone model . | THEORETICAL AND APPLIED FRACTURE MECHANICS , 2023 , 125 . |
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摘要 ：
In this paper, the effects of water-cement ratio, air-entraining agent type, and air content on the pore characteristic parameters of hardened concrete were investigated through an extensive series of experimental studies. First of all, according to different water-cement ratios, air-entraining agent types, and air contents, the correlation between the concrete pore spacing factor and the frost resistance durability factor was revealed by using the automatic analysis and testing instrument for the pore system of hardened concrete. Then, the decision tree method was utilized to propose specific pore spacing factors for different concrete scenarios, including the nonair-entrained concrete, air-entrained concrete, concrete with unqualified frost resistance, and concrete with qualified frost resistance. In cases where the pore spacing factor measurement fell within an ambiguous range, the classification was further refined according to the water-cement ratio. On that basis, the comprehensive range of pore spacing factors for the concrete with a qualified frost resistance was determined. Finally, the postevaluation method and standard procedure for assessing the frost resistance of concrete entities based on pore spacing factor and water-cement ratio were proposed to verify whether the frost resistance of concrete buildings meets the life expectancy requirements. This method facilitates the evaluation of the frost resistance quality of newly-built concrete projects, as well as the investigation and monitoring of frost resistance in existing structures during service.
关键词 ：
Air -entraining agent types Air -entraining agent types Pore spacing factor Pore spacing factor Frost resistance Frost resistance Cement concrete Cement concrete Post -evaluation Post -evaluation
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| GB/T 7714 | Yang, Ce , Zhang, Jinxi , Wang, Jiangang et al. Post-evaluation of frost resistance of cement concrete entities based on pore spacing factors of hardened concrete [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 411 . |
| MLA | Yang, Ce et al. "Post-evaluation of frost resistance of cement concrete entities based on pore spacing factors of hardened concrete" . | CONSTRUCTION AND BUILDING MATERIALS 411 (2023) . |
| APA | Yang, Ce , Zhang, Jinxi , Wang, Jiangang , Guo, Mingyang . Post-evaluation of frost resistance of cement concrete entities based on pore spacing factors of hardened concrete . | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 411 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The composite of phase change material (PCM) and high-viscosity modified asphalt (HVMA) is expected as a new ma-terial regulating the temperature of high-performance pavements, thereby ameliorating the urban heat island effect. This study focused on evaluating the roles of two kinds of PCMs, i.e. paraffin/expanded graphite/high-density polyeth-ylene composite material (PHDP) and polyethylene glycol (PEG), on a series of performances of HVMA. Fluorescence microscopy observations, physical rheological properties tests and indoor temperature regulating tests were conducted to determine the morphological, physical, rheological and temperature regulating performances of PHDP/HVMA or PEG/HVMA composites with various PCM contents prepared by fusion blending. Fluorescence microscopy test results revealed that the PHDP and PEG could be uniformly distributed in HVMA, but their distribution size and morphology were obviously different. Physical test results showed an increase in the penetration values of both PHDP/HVMA and PEG/HVMA compared to the HVMA without PCM. Their softening points did not change significantly with increasing PCM content due to the presence of a high-content of polymeric spatial reticulation. Ductility test reflected that the low-temperature properties of PHDP/HVMA were improved. However, the ductility of PEG/HVMA was much reduced due to the presence of large size PEG particles especially at 15 % PEG content. Rheological results from the recovery percent and non-recoverable creep compliance at 64 degrees C confirmed that the PHDP/HVMA and PEG/HVMA had excel-lent high-temperature rutting resistance regardless of PCM contents. Notably, the phase angle results reflected that the PHDP/HVMA was more viscous at 5-30 degrees C and more elastic at 30-60 degrees C. By contrast, PEG/HVMA was more elastic at the whole temperature range of 5-60 degrees C. Lastly but not least, compared to HVMA without PCM, the temperature regulating effect was 4 degrees C during heating of PHDP/HVMA containing 4 % PHDP and PEG/HVMA containing 15 % PEG, and their delay time were 456 s and 1240 s, respectively.
关键词 ：
Temperature regulating effect Temperature regulating effect Physical rheological performance Physical rheological performance Phase change materials Phase change materials High-viscositymodified asphalts High-viscositymodified asphalts Morphological performance Morphological performance
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| GB/T 7714 | Zhang, Jinxi , Dong, Zizhen , Sun, Guoqiang et al. Roles of phase change materials on the morphological, physical, rheological and temperature regulating performances of high-viscosity modified asphalt [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 875 . |
| MLA | Zhang, Jinxi et al. "Roles of phase change materials on the morphological, physical, rheological and temperature regulating performances of high-viscosity modified asphalt" . | SCIENCE OF THE TOTAL ENVIRONMENT 875 (2023) . |
| APA | Zhang, Jinxi , Dong, Zizhen , Sun, Guoqiang , Qi, Yue , Zhu, Xiaobin , Li, Yiwen . Roles of phase change materials on the morphological, physical, rheological and temperature regulating performances of high-viscosity modified asphalt . | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 875 . |
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摘要 ：
本发明公开了针对低强度流动化回填材料水力特性监测的土柱试验装置及方法，涉及低强度流动化回填材料水力特性、电导率和温度测量技术领域，装置主体为由十二个1/3等分(120°)玻璃圆柱拼接而成的有机玻璃圆柱直管、底座和顶盖组成，用于盛装待测试样；监测设备由水势传感器、渗压计、温湿盐一体传感器组成，分别测量试样固化期间材料的吸力、孔隙水压力、体积含水率、温度、电导率，三种传感器由上至下依次均匀排列在柱体直管上。本发明可以通过对低强度流动化回填材料不同龄期下的水力特性、电导率和温度的监测，对其水力行为的演变进行分析。此外，本装置具备安装简易、拆卸方便的优势，能够有效避免传感器的损坏，便于后续的取样试验工作。
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| GB/T 7714 | 荆鹏 , 宋心彤 , 张金喜 et al. 针对低强度流动化回填材料水力特性监测的土柱试验装置及方法 : CN202211112054.8[P]. | 2022-09-14 . |
| MLA | 荆鹏 et al. "针对低强度流动化回填材料水力特性监测的土柱试验装置及方法" : CN202211112054.8. | 2022-09-14 . |
| APA | 荆鹏 , 宋心彤 , 张金喜 , 张雅琪 . 针对低强度流动化回填材料水力特性监测的土柱试验装置及方法 : CN202211112054.8. | 2022-09-14 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The aim of this study is to investigate the influence of interface conditions on a backcalculated layer property for a flexible pavement with different base types. The simple friction model was utilized in the finite-element method (FEM) to simulate the interface condition, and four interface conditions were taken into account in analyses. The computed deflection time history indicated that the inadequate interface condition between the surface and base lead to the higher deflection peak for the pavement with a cement-treated base (CTB) and granular base (GB), while the interface condition between the base and subgrade has a significant influence on the deflection only for the pavement with a GB. The deflection time-history was backcalculated through a dynamic approach using the spectral element method (SEM) as a forward analysis engine in which the layers were treated as fully bonded. The results show that the interface condition shows an apparent influence on the backcalculated layer property. Due to the different contributions of each layer to the overall loading carrying capacity, the interface condition influence was different for different pavement scenarios, which should be appropriately considered for backcalculation and pavement evaluation. (C) 2021 American Society of Civil Engineers.
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| GB/T 7714 | Cao, Dandan , Zhao, Yanqing , Zhang, Jinxi et al. Investigation of the Interface Condition Influence on Backcalculated Layer Properties [J]. | JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS , 2021 , 147 (3) . |
| MLA | Cao, Dandan et al. "Investigation of the Interface Condition Influence on Backcalculated Layer Properties" . | JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS 147 . 3 (2021) . |
| APA | Cao, Dandan , Zhao, Yanqing , Zhang, Jinxi , Jing, Peng , Yao, Hui . Investigation of the Interface Condition Influence on Backcalculated Layer Properties . | JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS , 2021 , 147 (3) . |
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