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学者姓名：李悦
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Abstract ：
为探究碳中和目标下减排措施对粤港澳大湾区臭氧（O_3）形成的潜在影响，我们重点研究了粤港澳大湾区城区和郊区的O_3浓度和敏感性变化。本文基于中国未来排放动态评估模型（Dynamic Projection model for Emissions in China，简称DPEC）提供的“双碳”目标下的排放情景数据，采用WRF-SMOKE-CMAQ空气质量模式，分别模拟了我国2020年、2030年和2060年这三个关键节点年份的O_3浓度，并利用内嵌于CMAQ的DDM(Decoupled Direct Method）模块计算了各地O_3对NO_x和VOC的一阶敏感系数■，以揭示O_3对这两种主要前体物排放的响应敏感程度。研究表明：(1)对于O_3浓度的变化，从不同季节来看，与2020年相比，粤港澳大湾区地区2030年和2060年冬季O_3浓度均呈上升趋势。从不同城市来看，与其他城市相比，深圳的O_3浓度一直处于明显的上升趋势。(2)对于O_3敏感性的变化，■整体呈上升趋势，且负值区域逐渐减少，正值区域逐渐扩大。2030年■负值绝对值下降，NO_x滴定作用减弱。2060年，粤港澳大湾区大部分地区■转化为正值。对■来说，未来情景中研究区域全年均为正值且整体呈下降趋势。
Keyword ：
粤港澳大湾区 粤港澳大湾区 未来趋势 未来趋势 CMAQ-DDM CMAQ-DDM 臭氧敏感性 臭氧敏感性
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| GB/T 7714 | 郝江虹 , 李悦 , 赵莹 et al. 碳中和背景下粤港澳大湾区臭氧浓度及敏感性变化（英文） [J]. | Journal of Resources and Ecology , 2024 , 15 (01) : 204-213 . |
| MLA | 郝江虹 et al. "碳中和背景下粤港澳大湾区臭氧浓度及敏感性变化（英文）" . | Journal of Resources and Ecology 15 . 01 (2024) : 204-213 . |
| APA | 郝江虹 , 李悦 , 赵莹 , 程沁毓 , 赵秀勇 , 陈东升 . 碳中和背景下粤港澳大湾区臭氧浓度及敏感性变化（英文） . | Journal of Resources and Ecology , 2024 , 15 (01) , 204-213 . |
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Abstract ：
The effects of different contents of silica fume (SF) on the electromagnetic transmission performance (ETP) and mechanical properties of calcium aluminate cement (CAC) paste were studied. The dielectric loss of the main hydrated phases in the CAC paste was compared and analyzed for the first time by synthesizing various phases, and the electromagnetic transmission mechanism of SF in the CAC paste was explored. The results show that after adding SF, the porosity and pore tortuosity of CAC paste decrease, C(2)ASH(8) is densely packed in the pores, and long-term strength is significantly improved. With the increase of SF content, the dielectric constant and loss tangent decrease, and ETP becomes better. When the SF content is 30%, the ETP is increased by 40.51%, and the 90d compressive strength is increased by 18.50%. The degree of electromagnetic wave loss in CAC paste from large to small is: C(3)AH(6) > AH(3) > C(2)AH(8) > C(2)ASH(8) > CAH(10) > CA and CA(2). Finally, the reasons for the improvement of long-term strength and ETP of CAC paste by SF were comprehensively elucidated from the aspects of crystal content, pore structure, and microstructure through a variety of microscopic test methods. This SF-CAC composite material is expected to be used in the basement or the partition wall of the house to enhance the signal of electronic devices, such as mobile phones in the above places.
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| GB/T 7714 | Yang, Bin , Li, Yue , Lin, Hui et al. Study on the electromagnetic transmission properties and mechanical properties of calcium aluminate cement paste by silica fume [J]. | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2024 , 35 (21) . |
| MLA | Yang, Bin et al. "Study on the electromagnetic transmission properties and mechanical properties of calcium aluminate cement paste by silica fume" . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 35 . 21 (2024) . |
| APA | Yang, Bin , Li, Yue , Lin, Hui , Liu, Jianglin , Li, Yaqiang , Guo, Qiusheng . Study on the electromagnetic transmission properties and mechanical properties of calcium aluminate cement paste by silica fume . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2024 , 35 (21) . |
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In this study, a viscosity-reducing polycarboxylic acid superplasticizer (VRPCE) was synthesized using methylallyl polyoxyethylene ether (HPEG), acrylic acid (AA), and maltodextrin maleic acid monoester (MDMA) as the main raw materials. The influences of the VRPCE on the microscopic properties of cement paste were studied by gel permeation chromatography (GPC), total organic carbon test (TOC), zeta potential, laser particle size analysis, XRD, MIP, TG, and SEM. Finally, the effects of the VRPCE on the macroscopic properties of cement mortar were evaluated through flow time, slump flow, compressive strength, shrinkage, and creep. The results showed that the VRPCE can improve the hydration degree of the cement, optimize the pore structure, increase the porosity, improve the fluidity, compressive strength, and creep, and decrease the shrinkage resistance of the cement mortar.
Keyword ：
micro analysis micro analysis macro properties macro properties cement paste cement paste cement mortar cement mortar viscosity-reducing polycarboxylic acid superplasticizer viscosity-reducing polycarboxylic acid superplasticizer
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| GB/T 7714 | Wang, Zigeng , Shen, Yonghao , Li, Yue et al. Experimental Study on Improving the Performance of Cement Mortar with Self-Synthesized Viscosity-Reducing Polycarboxylic Acid Superplasticizer [J]. | BUILDINGS , 2024 , 14 (8) . |
| MLA | Wang, Zigeng et al. "Experimental Study on Improving the Performance of Cement Mortar with Self-Synthesized Viscosity-Reducing Polycarboxylic Acid Superplasticizer" . | BUILDINGS 14 . 8 (2024) . |
| APA | Wang, Zigeng , Shen, Yonghao , Li, Yue , Tian, Yuan . Experimental Study on Improving the Performance of Cement Mortar with Self-Synthesized Viscosity-Reducing Polycarboxylic Acid Superplasticizer . | BUILDINGS , 2024 , 14 (8) . |
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Abstract ：
Concrete pumping technology is widely used in reservoirs, dams, harbours and other hydraulic structures. To investigate the effects of pumping on the flowability, mechanical strength and frost resistance of hydraulic concrete, long-distance pumping tests were carried out on self-compacting concrete (SCC). This paper investigated the influence of high-pressure pumping on the workability, mechanical strength and frost resistance of SCC by analysing the changes in various properties of SCC before and after long distance pumping. The flowability of the fresh concrete decreased after long-distance pumping. Compared to before pumping, the slump of the four groups of SCC decreased by an average of 3.93% and the slump-flow decreased by an average of 23.09%. The homogeneity and stability of the fresh SCC improved significantly after pumping. After pumping, the V-funnel time of SCC was reduced by an average of 82.32% and the segregation rate was reduced by an average of 125.76%. Additionally, there was a slight increase in mechanical strength indicated by an average increase of 5.87% in cubic compressive strength, 8.99% in axial compressive strength, 7.78% in tensile splitting strength, and 5.22% in modulus of elasticity. Notably, the frost resistance of the SCC showed significant improvement after pumping. Under non freeze-thaw conditions, the compressive strength of SCC after pumping increased by an average of 5.87%. After 200 freeze-thaw cycles, the compressive strength (after pumping) increased by an average of 12.46%. An air void analyser was then used to test the air-void parameters to analyse the effect of long-distance pumping action on the air voids parameters. The study further established the correlation between air-void structure characteristics and freeze-thaw resistance. Under freeze-thaw conditions, the compressive strength showed a linear correlation with air content and spacing factor. The process of pumping can enhance the air-void structure of SCC, leading to improved frost resistance. Therefore, in the design of concrete frost resistance, pumping can be considered as an influencing factor to improve the frost resistance of concrete.
Keyword ：
Frost resistance Frost resistance Long-distance pumping Long-distance pumping Mechanical strength Mechanical strength Flowability Flowability Structure characteristics of air voids Structure characteristics of air voids
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| GB/T 7714 | Hao, Ji , Meng, Yuhao , Cui, Yan et al. The influence of long-distance pumping on the workability, mechanical strength, and frost resistance of SCC [J]. | ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING , 2024 , 24 (2) . |
| MLA | Hao, Ji et al. "The influence of long-distance pumping on the workability, mechanical strength, and frost resistance of SCC" . | ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING 24 . 2 (2024) . |
| APA | Hao, Ji , Meng, Yuhao , Cui, Yan , Mu, Jinlei , Li, Yue , Sui, Chune . The influence of long-distance pumping on the workability, mechanical strength, and frost resistance of SCC . | ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING , 2024 , 24 (2) . |
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Abstract ：
The thorough investigation into the evolution of concrete performance under sulfate attack environments holds significant importance for engineering applications in specific conditions. In this paper, a prediction model for the two evaluation indexes of sulfate attack resistance of concrete (SARC), namely compressive strength corrosion resistance coefficient and mass loss rate, is established based on four machine-learning algorithms: Support Vector Regression, Random Forest Regression, Gradient Boosting, and Extreme Gradient Boosting (XGB). A comparison of the various performances showed that the model based on the XGB algorithm had the strongest generalization ability and offered the best prediction of SARC (K test set R2=0.963, MLR test set R2=0.903). Feature importance and partial correlation analyses were performed for the two XGB models separately, and a graphical user interface was designed based on the two predictive models. The results reveal that the number of cycles, water-binder ratio, and cement content significantly influence the SARC. Moderately increasing cement, fly ash, and coarse aggregate content can enhance the SARC. Increasing the number of cycles, drying time, water-binder ratio, sand, and solution concentration will reduce the SARC. Therefore, measures such as moderately increasing the amount of cement, reducing the water-binder ratio, and increasing the fly ash content can be increased to improve the SARC, but overuse has no significant effect.
Keyword ：
Compressive strength corrosion resistance coefficient Compressive strength corrosion resistance coefficient Mass loss rate Mass loss rate Features importance analysis Features importance analysis Partial dependence analysis Partial dependence analysis Machine-learning model Machine-learning model
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| GB/T 7714 | Li, Yue , Shi, Junjie , Shen, Jiale et al. Prediction of the Sulfate Attack Resistance of Concrete Based on Machine-Learning Algorithms [J]. | JOURNAL OF COMPUTING IN CIVIL ENGINEERING , 2024 , 38 (6) . |
| MLA | Li, Yue et al. "Prediction of the Sulfate Attack Resistance of Concrete Based on Machine-Learning Algorithms" . | JOURNAL OF COMPUTING IN CIVIL ENGINEERING 38 . 6 (2024) . |
| APA | Li, Yue , Shi, Junjie , Shen, Jiale , Jin, Kaikai , Fan, Mengtian , Liu, Xiaolong . Prediction of the Sulfate Attack Resistance of Concrete Based on Machine-Learning Algorithms . | JOURNAL OF COMPUTING IN CIVIL ENGINEERING , 2024 , 38 (6) . |
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In urban areas with many buildings, the transmission of 5 G signals can be greatly absorbed or reflected, leading to decreased effectiveness of transmission. To address the issues mentioned above, the functional admixture formed by the mixture of nanocrystalline cellulose (NCC) and diammonium hydrogen phosphate (DAP) is added into concrete in this study, the electromagnetic transmission performance (ETP) and mechanical properties of concrete are enhanced simultaneously for the first time, and the electromagnetic transmission coefficient of concrete is doubled. When NCC and DAP are mixed, the electromagnetic transmission coefficient of concrete improved by 117.65 %-124.35 %, among which, when 0.5 wt% DAP and 4 wt% NCC are mixed, the electromagnetic transmission coefficient of concrete is the highest, and some frequency bands are as high as 70 %, meeting the requirements of electromagnetic wave transmitting materials. In addition, the compressive strength of concrete containing 4 wt% NCC and 0.5 wt% DAP increases by 24.3 % compared to concrete containing only 4 wt% NCC.
Keyword ：
5G frequency band 5G frequency band Mechanism analysis Mechanism analysis Concrete Concrete Functional admixture Functional admixture performance performance High electromagnetic transmission High electromagnetic transmission
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| GB/T 7714 | Liu, Jianglin , Li, Yue , Jin, Caiyun et al. Preparation and research of high electromagnetic wave transmission type concrete in 5G frequency band [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 443 . |
| MLA | Liu, Jianglin et al. "Preparation and research of high electromagnetic wave transmission type concrete in 5G frequency band" . | CONSTRUCTION AND BUILDING MATERIALS 443 (2024) . |
| APA | Liu, Jianglin , Li, Yue , Jin, Caiyun , Li, Yaqiang , Yang, Bin , Lin, Hui . Preparation and research of high electromagnetic wave transmission type concrete in 5G frequency band . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 443 . |
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Abstract ：
为探究碳中和目标下减排措施对粤港澳大湾区臭氧(O3)形成的潜在影响,我们重点研究了粤港澳大湾区城区和郊区的O3浓度和敏感性变化.本文基于中国未来排放动态评估模型(Dynamic Projection model for Emissions in China,简称DPEC)提供的"双碳"目标下的排放情景数据,采用WRF-SMOKE-CMAQ空气质量模式,分别模拟了我国2020年、2030 年和2060年这三个关键节点年份的O3浓度,并利用内嵌于CMAQ的DDM(Decoupled Direct Method)模块计算了各地O3对NOx和VOC的一阶敏感系数SO3_NOx和SO3_VOC,以揭示O3对这两种主要前体物排放的响应敏感程度.研究表明:(1)对于O3浓度的变化,从不同季节来看,与2020年相比,粤港澳大湾区地区2030年和2060年冬季O3浓度均呈上升趋势.从不同城市来看,与其他城市相比,深圳的O3浓度一直处于明显的上升趋势.(2)对于O3敏感性的变化,SO3_NOx整体呈上升趋势,且负值区域逐渐减少,正值区域逐渐扩大.2030年SO3_NOx负值绝对值下降,NOx滴定作用减弱.2060年,粤港澳大湾区大部分地区SO3_NOx转化为正值.对SO3_VOC来说,未来情景中研究区域全年均为正值且整体呈下降趋势.
Keyword ：
臭氧敏感性 臭氧敏感性 CMAQ-DDM CMAQ-DDM 未来趋势 未来趋势 粤港澳大湾区 粤港澳大湾区
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| GB/T 7714 | 郝江虹 , 李悦 , 赵莹 et al. 碳中和背景下粤港澳大湾区臭氧浓度及敏感性变化 [J]. | 资源与生态学报（英文版） , 2024 , 15 (1) : 204-213 . |
| MLA | 郝江虹 et al. "碳中和背景下粤港澳大湾区臭氧浓度及敏感性变化" . | 资源与生态学报（英文版） 15 . 1 (2024) : 204-213 . |
| APA | 郝江虹 , 李悦 , 赵莹 , 程沁毓 , 赵秀勇 , 陈东升 . 碳中和背景下粤港澳大湾区臭氧浓度及敏感性变化 . | 资源与生态学报（英文版） , 2024 , 15 (1) , 204-213 . |
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Biochar is a promising carbon-negative supplementary cementitious material (SCM). However, traditional biochar lacks active ingredients, and its porous structure severely weakens the mechanical properties of ordinary Portland cement (OPC), limiting its substitutability in cement. To meet the dual needs of decarbonization and strength in cement, this paper explored the potential of two types of silica-rich biochar, rice husk biochar rich in amorphous silica and bamboo biochar rich in crystalline silica, as carbon-negative SCMs. Here, the hydration, microstructure, and mechanical properties of rice husk biochar and bamboo biochar blended cements were investigated. Similar to bamboo biochar, rice husk biochar reduces flowability and drying shrinkage due to its porous structure. However, rice husk biochar contains a large amount of amorphous silica, resulting in the promotion of hydration of clinker and a significant pozzolanic effect, which shortens the setting time of cement, improves the weak structure and bonding interface of biochar, and further increases the hydration degree and polymerization degree of calcium silicate hydrate. Compared with bamboo biochar, rice husk biochar blended cement exhibited significantly higher compressive strengths at the same substitutions and ages. A 5% rice husk biochar blended cement at 28 days exhibited 12.9% and 29.8% higher compressive strength than OPC and 5% bamboo biochar blended cement, respectively. The compressive strength of 10% rice husk biochar blended cement was only 4% lower than that of OPC at 28 days. From a life cycle assessment, 10% rice husk biochar blended cement has the lowest unified carbon emissions (per MPa), 22% and 28% lower than that of 10% bamboo biochar blended cement and OPC, respectively, showing great potential for lower unified carbon emission cementitious materials.
Keyword ：
compressive strength compressive strength hydration hydration life cycle assessment life cycle assessment low carbon cement low carbon cement microstructure microstructure
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| GB/T 7714 | Li, Yaqiang , Lin, Hui , Li, Yue et al. Carbon Sequestration of Silica-Rich Biochar in Cement Accompanied by the Pozzolanic Effect [J]. | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2024 , 12 (37) : 13826-13839 . |
| MLA | Li, Yaqiang et al. "Carbon Sequestration of Silica-Rich Biochar in Cement Accompanied by the Pozzolanic Effect" . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING 12 . 37 (2024) : 13826-13839 . |
| APA | Li, Yaqiang , Lin, Hui , Li, Yue , Shen, Jiale , Yang, Changle , Wang, Kai . Carbon Sequestration of Silica-Rich Biochar in Cement Accompanied by the Pozzolanic Effect . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2024 , 12 (37) , 13826-13839 . |
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Abstract ：
Phosphogypsum slag-based composite cementitious materials were prepared by using phosphogypsum and slag powder as the main raw materials, adding quicklime, lithium slag, steel slag and other admixtures, and adding NaOH, NaHCO3 and triethanolamine (TEA). The effects of different admixtures on the fluidity, setting time and compressive strength of the composite cementitious materials were studied. Finally, XRD, MIP, TG-DTG, and SEM microscopic tests were used to analyze the reasons for the performance changes caused by the admixture from the aspects of phase composition, pore distribution, and hydration product morphology. The results show that the addition of NaOH, NaHCO3 and TEA reduces the fluidity and strength of the material and improves the setting time. The paste with 1 % NaOH and 0.03 % TEA can balance the working performance and mechanical properties.
Keyword ：
Setting time Setting time Fluidity Fluidity Phosphogypsum Phosphogypsum Admixture Admixture Compressive strength Compressive strength Slag Slag
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| GB/T 7714 | Lin, Hui , Li, Yue , Yang, Bin et al. Effects of different admixtures on the working performance and mechanical properties of phosphogypsum slag-based composite cementitious materials [J]. | JOURNAL OF BUILDING ENGINEERING , 2024 , 95 . |
| MLA | Lin, Hui et al. "Effects of different admixtures on the working performance and mechanical properties of phosphogypsum slag-based composite cementitious materials" . | JOURNAL OF BUILDING ENGINEERING 95 (2024) . |
| APA | Lin, Hui , Li, Yue , Yang, Bin , Xie, Dong . Effects of different admixtures on the working performance and mechanical properties of phosphogypsum slag-based composite cementitious materials . | JOURNAL OF BUILDING ENGINEERING , 2024 , 95 . |
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Abstract ：
船舶排放是影响沿海地区空气质量的重要因素。在向岸风的作用下，船舶排放对沿海地区大气污染物的不利影响更加显著。然而，已有研究仅仅基于特定时间范围内以及特定站点的情况，针对全年长时间序列以及不同季节，向岸风的发生频率以及对船舶排放传输的影响还尚未完全了解。因此，本研究选择长三角地区作为目标研究区域，使用WRF/Chem (The Weather Research and Forecast model coupled with Chemistry)模型来探究2018年向岸风影响下，船舶排放对沿海地区PM_(2.5)的影响。结果表明：（1）向岸风影响下，船舶排放对PM_(2.5)的贡献较全年平均贡献和非向岸风影响下的贡献更为显著，尤其是在沿海地区。向岸风时段，船舶排放对PM_(2.5)的贡献值在上海市和宁波市可分别达到9.3μg m~(–3)和7.4μg m~(–3)，分别为全年平均值的1.8和1.3倍。（2）在向岸风时段，船舶排放对PM_(2.5)的贡献不仅在沿海地区显著增加，在内陆地区的贡献也较为明显。在中部地区距海岸线200 km处，船舶排放对PM_(2.5)的贡献值在向岸风时段为4.5μg m~(–3)，而全年平均值仅为2.5μg m~(–3)。（3）在向岸风影响下，船舶排放对PM_(2.5)的影响呈现出明显的季节差异。在向岸风的影响下，冬季船舶排放对PM_(2.5)的贡献较其他季节大。在夏季，船舶排放对PM_(2.5)的贡献，在向岸风与非向岸风时段的差异最大。在春季，即使向岸风发生频率最低，但船舶排放对PM_(2.5)的影响仍较大。仅考虑年均或者月均的情况下，船舶排放对PM_(2.5)的贡献可能往往被低估，这将不利于重污染时期对船舶排放的精准防控。本研究结果将有助于理解向岸气流存在时，船舶排放传输特征，并为沿海空气污染控制和管理提供参考。
Keyword ：
PM_(2.5) PM_(2.5) 船舶排放 船舶排放 长三角地区 长三角地区 WRF/Chem WRF/Chem 向岸风 向岸风
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| GB/T 7714 | 赵莹 , 李悦 , 马怡哲 et al. 中国长三角地区船舶排放对PM_(2.5)的贡献：向岸气流的影响（英文） [J]. | Journal of Resources and Ecology , 2023 , 14 (05) : 991-1000 . |
| MLA | 赵莹 et al. "中国长三角地区船舶排放对PM_(2.5)的贡献：向岸气流的影响（英文）" . | Journal of Resources and Ecology 14 . 05 (2023) : 991-1000 . |
| APA | 赵莹 , 李悦 , 马怡哲 , 程沁毓 , 郝江虹 , 赵秀勇 et al. 中国长三角地区船舶排放对PM_(2.5)的贡献：向岸气流的影响（英文） . | Journal of Resources and Ecology , 2023 , 14 (05) , 991-1000 . |
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