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学者姓名：徐松
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Abstract ：
为了建立合理的坑槽修补材料评价方法，选择性能优良且适合特定环境的修补材料。通过叶片阻力试验、水煮试验、滚动筛试验、马歇尔稳定度试验、车辙试验、低温弯曲蠕变试验和冻融劈裂试验来测试修补料的施工性能和路用性能，并对修补料的评价标准进行修订。基于试验结果，建议修补料的黏附等级、滚动筛残留率和水稳定性分别不小于4级、60%和75%。并且，热补料的动稳定度和最大弯曲应变应分别不小于800次·mm~(-1)和2 300με,冷补料应不小于600次·mm~(-1)和900με。在施工和易性方面，对于不可储存类的修补料建议现场拌制，并在制备后30 min内尽快完成修补施工作业，拌和扭矩需要小于40 N·m。此外，水泥-乳化沥青和环氧树脂冷补料的初始强度较高，高温稳定性好，可以实现快速修补的目的，建议初始稳定度不小于2 kN。
Keyword ：
修补料 修补料 修补材料性能 修补材料性能 坑槽修补 坑槽修补 沥青路面 沥青路面 评价指标 评价指标
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| GB/T 7714 | 徐松 , 徐康义 , 王叶飞 et al. 沥青路面坑槽修补材料特性及评价标准 [J]. | 南昌大学学报(工科版) , 2024 , 46 (01) : 69-75 . |
| MLA | 徐松 et al. "沥青路面坑槽修补材料特性及评价标准" . | 南昌大学学报(工科版) 46 . 01 (2024) : 69-75 . |
| APA | 徐松 , 徐康义 , 王叶飞 , 黄金铭 , 章灿林 , 贾晓娟 . 沥青路面坑槽修补材料特性及评价标准 . | 南昌大学学报(工科版) , 2024 , 46 (01) , 69-75 . |
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为揭示移动荷载作用下公路隧道复合式路面结构力学响应，通过现场试验与有限元法相结合及模型精度验证的手段，基于响应面试验设计方法分析有仰拱和无仰拱的隧道复合式路面力学响应。结果表明，无论有仰拱，还是无仰拱，轴载对各项力学指标的影响最大，混凝土基层厚度对各项力学指标的影响较小，水平荷载对混凝土面板板底拉应力和沥青面层层间剪应力的影响较大、对沥青面层层底拉应变影响较小；无仰拱时围岩模量对各项力学指标的影响大于有仰拱；有仰拱时混凝土面层厚度对沥青面层层底拉应变的影响大于沥青面层厚度，混凝土面层厚度对沥青面层层间剪应力的影响大于基层厚度，无仰拱时影响相反；有仰拱隧道复合式路面结构轴载换算系数得到混凝土面层设计轴次是现行规范的1.8倍，无仰拱是1.3倍；有仰拱、无仰拱时混凝土面层疲劳寿命分别比设计轴载大17和8个数量级，沥青面层疲劳寿命均比设计轴载大1个数量级。研究结果可为隧道复合式路面结构设计研究提供参考。
Keyword ：
力学响应 力学响应 响应面 响应面 疲劳寿命 疲劳寿命 移动荷载 移动荷载 隧道复合式路面 隧道复合式路面
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| GB/T 7714 | 翁斌 , 张超 , 阙云 et al. 基于响应面法的隧道复合式路面力学响应分析 [J]. | 森林工程 , 2024 , 40 (02) : 176-187 . |
| MLA | 翁斌 et al. "基于响应面法的隧道复合式路面力学响应分析" . | 森林工程 40 . 02 (2024) : 176-187 . |
| APA | 翁斌 , 张超 , 阙云 , 章灿林 , 徐松 . 基于响应面法的隧道复合式路面力学响应分析 . | 森林工程 , 2024 , 40 (02) , 176-187 . |
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Abstract ：
Red clay exhibits characteristics such as softening owing to water absorption and cracking because of water loss, which can lead to slope instability, road cracking, and compromised structural integrity when used directly in roadbed filling. Although the addition of industrial materials such as cement is a common engineering treatment, it severely impairs soil renewability. Lignosulfonate (LS) extracted from paper plant waste fluids is a natural bio-based polymer with promising applications as a soil improver. In this study, the boundary moisture content and mechanical properties of LS-treated red clay were investigated using Atterberg, unconfined compressive strength, and direct shear strength tests. Additionally, the LS-treated red clay modification mechanism was explored at multiple scales using zeta potential analysis, X-ray diffraction, scanning electron microscopy coupled with energy dispersive spectroscopy, and Fourier transform infrared spectroscopy. The results indicated that the LS dosage significantly affected both the water content and mechanical strength of the red clay boundaries. The optimal dosage of LS for red clay was 3 wt. %, at which the liquid limit was reduced by 32.97%, the plastic limit by 19.33%, and the plasticity index by 48.37%. The 28-day compressive strength of LS-treated red clay was increased by 378.4%, and the direct shear strength was increased by 136%. Analysis of the microstructure and mineral composition revealed that the LS-treated red clay did not form new minerals, but primarily filled pores and connected soil particles. Through the combined effects of hydrogen bonds, electrostatic interactions, and cation exchange, the LS-treated red clay reduced the size of the mineral particles and the thickness of the mineral double electric layer, resulting in increased structural densification. These results are of great scientific significance for the ecological modification of soils.
Keyword ：
Boundary moisture content Boundary moisture content Lignosulfonate Lignosulfonate Mechanical property Mechanical property Microstructure Microstructure Modification mechanism Modification mechanism Red clay Red clay
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| GB/T 7714 | Ma, Hongyan , Pei, Chenglin , Li, Sihan et al. Performance Evaluation and Modification Mechanism of Red Clay Treated with Lignosulfonate [J]. | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2024 , 22 (11) : 1961-1976 . |
| MLA | Ma, Hongyan et al. "Performance Evaluation and Modification Mechanism of Red Clay Treated with Lignosulfonate" . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING 22 . 11 (2024) : 1961-1976 . |
| APA | Ma, Hongyan , Pei, Chenglin , Li, Sihan , Xu, Song . Performance Evaluation and Modification Mechanism of Red Clay Treated with Lignosulfonate . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2024 , 22 (11) , 1961-1976 . |
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Abstract ：
为探究不同离子乳化剂对乳化沥青稳定性产生的不同影响，基于分子动力学模拟，利用Materials Studio软件构建“沥青-乳化剂-水-乳化剂-沥青”双层模型结构，模拟含不同离子乳化剂分子的乳化沥青体系，对比研究阴（SDS）/阳（CTAC）离子乳化剂对乳化沥青稳定性的影响.对比加入不同乳化剂分子后，沥青乳液的相对浓度分布、界面膜厚度、界面形成能以及静电势（ESP）的变化，分析乳化沥青的稳定性.结果表明，相较于加入CTAC乳化剂的沥青乳液，SDS乳化剂更能增大沥青与水之间界面层的厚度，减小两相的界面张力，提高乳化沥青的稳定性；从静电势角度分析，相较于CTAC乳化剂，SDS乳化剂分子烷烃链的静电势极大值更大，更易与静电势为负值的原子相结合.因此，加入SDS乳化剂的乳化沥青，其整体稳定性能要优于加入CTAC乳化剂的乳化沥青.
Keyword ：
乳化剂 乳化剂 乳化沥青 乳化沥青 分子模拟 分子模拟 稳定性 稳定性 静电势 静电势
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| GB/T 7714 | 袁燕 , 陈宏宇 , 王叶飞 et al. 离子乳化剂对乳化沥青稳定性影响的分子模拟 [J]. | 湖南大学学报(自然科学版) , 2024 , 51 (03) : 51-58 . |
| MLA | 袁燕 et al. "离子乳化剂对乳化沥青稳定性影响的分子模拟" . | 湖南大学学报(自然科学版) 51 . 03 (2024) : 51-58 . |
| APA | 袁燕 , 陈宏宇 , 王叶飞 , 徐松 , 薛斌 . 离子乳化剂对乳化沥青稳定性影响的分子模拟 . | 湖南大学学报(自然科学版) , 2024 , 51 (03) , 51-58 . |
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Red clay is a special soil that loses water and shrinks easily, which causes expansion and contraction and leads to the generation and development of cracks, weakening the strength and engineering properties of the soil. This investigation analyzed the mechanism of crack evolution and patterns of strength decay in red clay under dry-wet cycles and established a relationship between strength and crack ratio by employing image processing techniques and conducting direct shear tests on red clay with various initial moisture contents and humidification times. The results show that the crack ratio increases with the number of dry-wet cycles and eventually tends to be stable after the fourth dry-wet cycle, and the stress-displacement curve of red clay changes from weak hardening to hardening. With the progress of the dry and wet cycles, the shear strength indexes of red clay decrease extensively, displaying a negative association with the sample's initial moisture content and the duration of humidification. Based on the experimental result, a quadratic function was established to model the relationship between soil cracking ratio and shear strength, which can predict the shear strength of red clay from the cracking ratio.
Keyword ：
Crack Crack Dry-wet cycle Dry-wet cycle Image processing technology Image processing technology Red clay Red clay Shear strength Shear strength
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| GB/T 7714 | Ma, Hongyan , Pei, Chenglin , Huang, Renjie et al. Crack Evolution and Strength Attenuation of Red Clay under Dry-Wet Cycles [J]. | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2024 , 36 (4) . |
| MLA | Ma, Hongyan et al. "Crack Evolution and Strength Attenuation of Red Clay under Dry-Wet Cycles" . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING 36 . 4 (2024) . |
| APA | Ma, Hongyan , Pei, Chenglin , Huang, Renjie , Xu, Song . Crack Evolution and Strength Attenuation of Red Clay under Dry-Wet Cycles . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2024 , 36 (4) . |
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SBS modified asphalt is an important material to improve the quality of high-grade pavements and airport runways, it will deteriorate during the service life due to a combination of environmental factors leading to pavement disease which triggers the maintenance and reconstruction. In this process, an amount of reclaimed asphalt pavement (RAP) will be produced. For environment protection and resource reservation, RAP is usually regenerated by a rejuvenator. In this paper, reactive rejuvenators were prepared by epoxy compounds for regenerating aged SBS modified asphalt (A-SBSMA), and the changes in physical properties, rheological properties, chemical structure, and microscopic morphology of the regeneration of A-SBSMA before and after were investigated to evaluate the regeneration effect. Compared with traditional rejuvenators, the significant effect of reactive rejuvenators on the recovery of physical properties and rheological properties of A-SBSMA. By FTIR and microscopic morphology analysis, reactive rejuvenator can better recover the functional group species, broken SBS molecular structure, and network structure of A-SBSMA. © 2023 ASCE.
Keyword ：
Asphalt Asphalt Morphology Morphology Physical properties Physical properties Rheology Rheology Structural properties Structural properties
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| GB/T 7714 | Xu, Song , Tang, Guangming , Zhou, Jihong et al. Regeneration Effects of Epoxy Compounds on Aged SBS Modified Asphalt [C] . 2024 : 144-154 . |
| MLA | Xu, Song et al. "Regeneration Effects of Epoxy Compounds on Aged SBS Modified Asphalt" . (2024) : 144-154 . |
| APA | Xu, Song , Tang, Guangming , Zhou, Jihong , Cao, Zhilong , Luo, Yuyang , Jia, Xiaojuan . Regeneration Effects of Epoxy Compounds on Aged SBS Modified Asphalt . (2024) : 144-154 . |
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为了揭示聚氨酯胶结料的过早破坏机制,更好地优化配方和施工工艺,通过分析抗拉强度、剪切强度、黏结强度以及断裂伸长率、微观形貌和官能团,对聚氨酯胶结料的破坏机制进行规律总结.结果表明,老化480 h后,水热老化的断裂伸长率是热氧老化下降量的2.44倍,黏结强度和剪切强度的下降比例分别为热氧老化的4.01倍和8.95倍.并且,紫外老化对抗拉强度的削弱作用远大于后固化而增加的强度,其老化速率加快,抗拉强度下降速率也随之加快.此外,在路面施工过程中,应尽量保证水泥路面的含水率低于4%,降雨后干燥24 h左右便可继续施工,工期紧张时可以采用大功率落地式工业电风扇或者红外加热车等降低路面含水率,以确保聚氨酯胶结料的施工质量.
Keyword ：
材料老化 材料老化 破坏分析 破坏分析 紫外老化 紫外老化 聚氨酯胶 聚氨酯胶
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| GB/T 7714 | 徐松 , 王叶飞 , 魏必成 et al. 聚氨酯铺装材料的过早破坏机制研究 [J]. | 湖南大学学报（自然科学版） , 2024 , 51 (9) : 99-110 . |
| MLA | 徐松 et al. "聚氨酯铺装材料的过早破坏机制研究" . | 湖南大学学报（自然科学版） 51 . 9 (2024) : 99-110 . |
| APA | 徐松 , 王叶飞 , 魏必成 , 袁燕 , 阙云 , 林存辉 . 聚氨酯铺装材料的过早破坏机制研究 . | 湖南大学学报（自然科学版） , 2024 , 51 (9) , 99-110 . |
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In this study, a novel approach based on Munsell value was established to reveal the relationship between the aging degree and color vision of asphalt. Five different asphalt binders were treated by three types of aging protocols such as thin film oven test (TFOT), pressure aging vessel (PAV), and ultraviolet (UV) radiation, then the effects of each aging treatment on the ductility and color spectrum (collected by a spectrometer, AvaField-3) of the binders were studied. The results show that the ductility of five binders is decreased after the three aging modes (including TFOT, PAV and UV aging), nevertheless, the Munsell values show different behaviors, they become smaller after TFOT and PAV aging while becoming larger after UV aging. Scanning electron microscope (SEM) photographs show that the UV aging leads to a transformation of the binder's surface from smooth to pleated, thus the specular reflection of the asphalt surface changes into diffuse reflection, resulting in an increase in Munsell value of asphalt after UV aging. Meanwhile, the variation of Munsell value for the asphalt after UV aging is larger than that for asphalt after thermal oxidative aging, resulting in the increase of Munsell value of asphalt which undergoes thermal oxidative aging and UV aging. Based on field data collection and analysis, a linear regression equation (R2 = 0.915) is established between the Munsell value and the service life of asphalt pavement, which shows that the asphalt pavement will become white with the service life-prolonging. Based on this study, the method of Munsell value can be a promising approach to evaluate the aging degree of asphalt pavement.
Keyword ：
Aging Aging Asphalt Asphalt Ductility Ductility Munsell value Munsell value Scanning electron microscope Scanning electron microscope
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| GB/T 7714 | Xu, Song , Wang, Yefei , Fang, Lei et al. A Novel Approach Based on Munsell Value for the Evaluation of Asphalt Aging Degree [J]. | INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY , 2024 . |
| MLA | Xu, Song et al. "A Novel Approach Based on Munsell Value for the Evaluation of Asphalt Aging Degree" . | INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY (2024) . |
| APA | Xu, Song , Wang, Yefei , Fang, Lei , Zhang, Canlin , Jia, Xiaojuan , Yuan, Yan . A Novel Approach Based on Munsell Value for the Evaluation of Asphalt Aging Degree . | INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY , 2024 . |
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为探究沥青材料的自愈合性能，基于分子动力学模拟，利用Materials Studio软件建立基质沥青、 SBS(styrene-butadiene-styrene)改性沥青、老化沥青以及老化SBS改性沥青的三维微裂缝模型；通过密度分析、相对浓度分布以及自由体积分数等方法，分析自愈合模型的愈合情况.结果表明，SBS改性剂对沥青的自愈有一定的促进作用，老化对沥青的自愈有一定的抑制作用，4种沥青的自愈潜力从大到小依次为SBS改性沥青、基质沥青、老化后SBS改性沥青以及老化沥青.
Keyword ：
分子动力学 分子动力学 扩散系数 扩散系数 沥青胶结料 沥青胶结料 自愈合 自愈合
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| GB/T 7714 | 袁燕 , 陈宏宇 , 王叶飞 et al. 分子动力学的不同沥青分子自愈机制分析 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (03) : 307-315 . |
| MLA | 袁燕 et al. "分子动力学的不同沥青分子自愈机制分析" . | 福州大学学报(自然科学版) 52 . 03 (2024) : 307-315 . |
| APA | 袁燕 , 陈宏宇 , 王叶飞 , 徐松 , 薛斌 . 分子动力学的不同沥青分子自愈机制分析 . | 福州大学学报(自然科学版) , 2024 , 52 (03) , 307-315 . |
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To investigate the different effects of different ionic emulsifiers on the stability of emulsified asphalt，based on molecular dynamics simulation， the double-layer model structure of 'asphalt-emulsifier-water-emulsifier-asphalt'was constructed by using Materials Studio software，and emulsified asphalt systems containing different ionic emulsifier molecules were simulated to compare the effect of anionic （SDS）/cationic （CTAC）emulsifiers on the stability of emulsified asphalt. The changes in the relative concentration distribution，interfacial film thickness，interfacial formation energy，and electrostatic potential （ESP） of the asphalt emulsions were compared with the addition of different emulsifier molecules in order to analyze the stability of the emulsified asphalt. The results show that the SDS emulsifier increases the thickness of the interfacial layer between asphalt and water，reduces the interfacial tension between the two phases，and improves the stability of the emulsified asphalt，compared with the CTAC emulsifier. From the perspective of electrostatic potential analysis，compared with CTAC emulsifier，SDS emulsifier molecule has a larger maximum electrostatic potential of the alkane chain，and it is more likely to bond with atoms with negative electrostatic potential. Therefore，the overall stability of emulsified asphalt with an SDS emulsifier is better than that of emulsified asphalt with a CTAC emulsifier. © 2024 Hunan University. All rights reserved.
Keyword ：
Asphalt Asphalt Computer software Computer software Electrostatics Electrostatics Emulsification Emulsification Molecular dynamics Molecular dynamics Molecules Molecules Stability Stability
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| GB/T 7714 | Yuan, Yan , Chen, Hongyu , Wang, Yefei et al. Molecular Simulation on Effect of Ionic Emulsifiers on Stability of Emulsified Asphalt [J]. | Journal of Hunan University Natural Sciences , 2024 , 51 (3) : 51-58 . |
| MLA | Yuan, Yan et al. "Molecular Simulation on Effect of Ionic Emulsifiers on Stability of Emulsified Asphalt" . | Journal of Hunan University Natural Sciences 51 . 3 (2024) : 51-58 . |
| APA | Yuan, Yan , Chen, Hongyu , Wang, Yefei , Xu, Song , Xue, Bin . Molecular Simulation on Effect of Ionic Emulsifiers on Stability of Emulsified Asphalt . | Journal of Hunan University Natural Sciences , 2024 , 51 (3) , 51-58 . |
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