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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 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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Abstract ：
Calcium aluminate cement (CAC) is an important hydraulic cementitious material. It is widely used in construction, metallurgy, chemical industry and other fields due to its high early strength. The factors affecting its strength are also very complex. The research focus of this paper is to establish a prediction model for the compressive strength of CAC paste, so as to assist scientific research and practical engineering to quickly predict the strength of CAC paste at different ages under different mix ratios and curing conditions. In this paper, 273 sets of data are trained and tested based on support vector regression (SVR), random forest regression (RFR), gradient boosting (GB) and extreme gradient boosting (XGB) algorithms. It is found that the prediction accuracy of GB model can reach 89%. Meanwhile, based on the GB model, the feature importance analysis, global interpretation and dependence analysis are carried out. It is found that the main factors affecting the strength of CAC are relative humidity, silica fume content and curing temperature. To obtain high-strength CAC paste, the recommended mix ratio and curing conditions are as follows: Al2O3 content is 67%, CaO content is 32%, silica fume replacement rate is 10%, water-cement ratio is 0.1, relative humidity is 90%, curing temperature is 5 degrees C and low-temperature treatment time is greater than 60 days. Finally, a graphical user interface is established to facilitate direct prediction of CAC paste under new mix ratio and curing conditions.
Keyword ：
Predictive models Predictive models Compressive strength Compressive strength Calcium aluminate cement Calcium aluminate cement Feature analysis Feature analysis Machine learning Machine learning
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| GB/T 7714 | Yang, Bin , Li, Yue , Shen, Jiale et al. Analysis and prediction of compressive strength of calcium aluminate cement paste based on machine learning [J]. | ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING , 2024 , 25 (1) . |
| MLA | Yang, Bin et al. "Analysis and prediction of compressive strength of calcium aluminate cement paste based on machine learning" . | ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING 25 . 1 (2024) . |
| APA | Yang, Bin , Li, Yue , Shen, Jiale , Lin, Hui . Analysis and prediction of compressive strength of calcium aluminate cement paste based on machine learning . | ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING , 2024 , 25 (1) . |
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Abstract ：
Traditional magnesium phosphate cement (MPC) has problems such as high carbon emissions and uncoordinated development of setting time and strength. For the purpose of reducing the carbon emission of MPC, improve its strength and promote the comprehensive utilization of brucite resources, magnesium phosphate cement (NBMPC) was prepared by using natural brucite (NB) as magnesia material, and modified by ultrafine metakaolin (UMK). The results showed that the initial setting time of NBMPC without UMK was 30 min, the compressive strength of 3 h and 28 d was 5.17 MPa and 46.57 MPa, respectively. When UMK content was 10 %, the maximum initial setting time of NBMPC was 51 min. When UMK content was 30 %, the highest compressive strength of NBMPC at 3 h and 28 d was 35.56 MPa and 70.74 MPa, respectively. The products of NBMPC were MgNH4PO4.6 H2O, hydrated MgHPO4 and a small amount of calcium phosphate compounds. The modification mechanism of UMK on NBMPC was chemical modification and physical filling. On the one hand, the chemical environment of Si and Al in UMK changed in NBMPC, resulting in the formation of aluminosilicate phosphate, MgNH4PO4.6 H2O containing Al and Si, and calcium phosphate compounds containing Al and Si. Amorphous AlPO4 was formed in NBMPC with higher UMK content. UMK promoted the early crystallization of MgNH4PO4.6 H2O, reduced the production of MgHPO4.7 H2O and inhibited its transformation. Moreover, UMK improved the pore size distribution of NBMPC and reduced its porosity. When preparing NBMPC, the content of UMK can be optimized according to the engineering type and construction environment.
Keyword ：
Micro-analysis Micro-analysis Magnesium phosphate cement Magnesium phosphate cement Ultrafine metakaolin Ultrafine metakaolin Natural brucite Natural brucite Properties Properties
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| GB/T 7714 | Long, Shiru , Li, Yue , Wang, Nan et al. Research on the influence of ultrafine metakaolin on the properties of magnesium phosphate cement prepared by natural brucite [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 452 . |
| MLA | Long, Shiru et al. "Research on the influence of ultrafine metakaolin on the properties of magnesium phosphate cement prepared by natural brucite" . | CONSTRUCTION AND BUILDING MATERIALS 452 (2024) . |
| APA | Long, Shiru , Li, Yue , Wang, Nan , Wang, Zigeng , Lin, Hui . Research on the influence of ultrafine metakaolin on the properties of magnesium phosphate cement prepared by natural brucite . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 452 . |
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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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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 ：
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 ：
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 ：
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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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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