基于RSM的GFRC配合比设计优化
作者：
李良平;唐伟桐;甘元初;王劲松;黄瑶#&#&#LI Liangping;...
期刊：
混凝土 ,2024年(8):179-183,192 ISSN：1002-3550
作者机构：
[王劲松] 南华大学土木工程学院,湖南 衡阳 421001;[王劲松] 南华大学 长三角(诸暨)研究院,浙江 绍兴 312000;[甘元初; HUANG Yao; 李良平; 唐伟桐] 南华大学
关键词：
混凝土;玻璃纤维;响应曲面法;轻骨料;力学性能
摘要：
为了探究玻璃纤维掺量、玻璃纤维长度和陶粒对混凝土力学性能的影响,配制玻璃纤维增强混凝土(GFRC),采用响应面法和中心复合表面设计探究单因素间交互作用对GFRC性能的影响.结果表明:单因素对混凝土抗压强度响应显著程度依次为陶粒取代率＞玻璃纤维掺量＞玻璃纤维长度,双因素交互作用下显著程度为玻璃纤维长度和玻璃纤维掺量＞陶粒取代率和玻璃纤维掺量＞陶粒取代率和玻璃纤维长度;GFRC最优配合比组合为陶粒取代率为10.6％,玻璃纤维长度为14.4 mm,玻璃纤维掺量为0.59％时,预测抗压强度最高为48.5 MPa,与实测平均值相差仅0.2 MPa.该成果有助于GRFC的推广使用,也为此提供了优化配合比设计和参考试验数据,具有工程指导意义.
语种：
中文
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Rheokinetics and fluidity modification of alkali activated ultrafine metakaolin based geopolymers
作者：
Ouyang, Gaoshang;Wang, Jingsong* ;Wang, Rui;Chen, Leping;Bu, Bo
期刊：
Construction and Building Materials ,2021年269:121268 ISSN：0950-0618
通讯作者：
Wang, Jingsong
作者机构：
[Ouyang, Gaoshang; Bu, Bo; Wang, Jingsong; Chen, Leping; Wang, Rui] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.;[Ouyang, Gaoshang; Wang, Jingsong] Univ South China, Yangtze Delta Res Inst, Zhuji 311800, Peoples R China.
通讯机构：
[Wang, Jingsong] U;Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Rheokinetics;Geopolymerization;Fluidity modification;Viscosity
摘要：
The rheokinetics of geopolymer slurry and its fluidity modification methods, as well as modification mechanism were investigated by performing viscosity time dependence experiments and a cement comparative experiment. The results show that the viscosity curve of geopolymer slurry fits well with power law equations. The viscosity time dependence can be employed to characterize the geopolymerization process, and to describe the variations of fluidity with time. K+ activated geopolymer has lower initial viscosity and better fluidity retention than Na+ does. Among superplasticizers, naphthalene-based superplasticizer performs best, but superplasticizers simultaneously promote the deformation of viscosity. Viscosity curve of cement changed unevenly. (C) 2020 Elsevier Ltd. All rights reserved.
语种：
英文
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The effects of calcium content on molecular structure and mechanical properties of sodium aluminosilicate hydrate (NASH) gels by molecular dynamics simulation
作者：
Wang, Rui;Wang, Jingsong*
期刊：
Journal of Non-Crystalline Solids ,2021年551:120411 ISSN：0022-3093
通讯作者：
Wang, Jingsong
作者机构：
[Wang, Rui] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Wang, Jingsong] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Wang, Jingsong] U;Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Aluminosilicates;Bond length;Calcium;Compressive strength;Distribution functions;Elastic moduli;Gels;Hydrates;Hydration;Molecular structure;Sodium compounds;Calcium content;Energy profile;Mean square displacement;Molecular dynamics simulations;Production run;Radial distribution functions;Sodium aluminosilicate hydrates;Total energy;Molecular dynamics
摘要：
The effects of calcium content on the molecular structure and mechanical properties of sodium aluminosilicate hydrate (NASH) gels were studied by molecular dynamics simulations. NASH gels with different calcium content were constructed, followed by optimization, equilibration, and production runs of molecular dynamics simulation. Properties such as energy profile, radial distribution function (RDF), distribution of bond length and bond angle, mean square displacement (MSD), elastic modulus and density were obtained. The results indicated that with the increase of Ca/Al, average bond lengths and total energy decreased monotonically, and the distributions of bond lengths and bond angles became narrower. Results from the MSD analysis showed that diffusion degree of both Si and Al in the gels decreased with the increase of the Ca/Al ratio. Furthermore, the elastic modulus, compressive strength and density of the gel systems increased monotonically with the increase of calcium content, and the trend is consistent with experimental findings. © 2020 Elsevier B.V.
语种：
英文
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砌体填充墙对RC框架结构抗震性能影响的研究
作者：
孙冰;杨鑫;王劲松;曾晟;王永海
期刊：
山西建筑 ,2021年47(06):31-34 ISSN：1009-6825
作者机构：
[王劲松; 孙冰] 南华大学土木工程学院;南华大学长三角(诸暨)研究院;[曾晟] 南华大学资源环境与安全工程学院;[王永海] 中国建筑科学研究院;[杨鑫] 南华大学土木工程学院<&wdkj&>南华大学长三角(诸暨)研究院
关键词：
框架结构;砌体填充墙;抗震性能;研究现状
摘要：
砌体填充墙作为改变结构受力性能的关键因素,其对框架结构的抗震能力乃至建筑物的安全稳定有着至关重要的作用。围绕砌体填充墙对RC框架结构抗震性能的影响,介绍了砌体填充墙RC框架结构的受力过程和破坏模式,从水平承载力、刚度效应和变形能力三个方面对国内外研究成果展开了分析总结,并根据当前研究现状对框架结构未来的发展方向进行了展望。
语种：
中文
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The effect of Na+ and H2O on structural and mechanical properties of coal gangue-based geopolymer: Molecular dynamics simulation and experimental study
作者：
Wang, Rui;Wang, Jingsong* ;Song, Qingchun
期刊：
Construction and Building Materials ,2021年268:121081 ISSN：0950-0618
通讯作者：
Wang, Jingsong
作者机构：
[Wang, Rui] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Wang, Jingsong; Song, Qingchun] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Wang, Jingsong] U;Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Na+;H2O;Coal gangue-based geopolymer;Molecular structure;Mechanical properties;Molecular dynamics simulation
摘要：
The aim of this work is to study the impacts of Na+ and H2O on structural and mechanical properties of coal gangue-based geopolymer by experiment and molecular dynamics. Geopolymers were prepared by coal gangue and mixed solution of NaOH and water glass. Then X-ray fluorescence (XRF) and X-ray diffraction (XRD) were utilized to characterize the main chemical composition and crystalline phase of geopolymer after 28d curing. Moreover, Na2Si2O5 glass was firstly proposed to establish the molecular structure of geopolymers with different Na/Al and H2O/Al. Structural optimization and molecular dynamics simulation were implemented under the specific force field. Simulated XRD pattern, energy and temperature curves, radial distribution function (RDF), hydrogen bond, bond angle distribution, mean square displacement (MSD) and elastic modulus of geopolymer were calculated and analyzed. Results indicated that with the increase of Na+ and H2O content, structure of geopolymer became more stable and mechanical properties were improved significantly. (C) 2020 Elsevier Ltd. All rights reserved.
语种：
英文
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Effective removal of trace antimony(III) from aqueous solution by phosphonic acid-functionalized hollow mesoporous silica spheres as a novel adsorbent
作者：
Yan, Yao;Wang, Jing-song* ;Chen, Si-li;Bing, Yong-xin* ;Guo, Qing-wei;...
期刊：
Desalination and Water Treatment ,2020年174:230-239 ISSN：1944-3994
通讯作者：
Wang, Jing-song;Bing, Yong-xin
作者机构：
[Wang, Jing-song; Xie, Lei; Yan, Yao; Han, Ke-chang; Duan, Zhi-yong] Univ South China, Sch Civil Engn, Hengyang 421000, Peoples R China.;[Chen, Si-li; Bing, Yong-xin; Guo, Qing-wei] Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China.
通讯机构：
[Wang, Jing-song] U;[Bing, Yong-xin] M;Univ South China, Sch Civil Engn, Hengyang 421000, Peoples R China.;Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China.
关键词：
Hard and soft templet method;Hollow mesoporous silica spheres;Phosphonic acid-functionalized silica;Trace antimony(III) adsorption
摘要：
This study focused on the preparation of phosphonic acid-functionalized hollow mesoporous silica spheres (PHMSs) and their adsorption performance of trace antimony(III) from water under room temperature. Firstly, monodisperse carbon microspheres (CS) synthesized by the glucose-oxygen hydrothermal method was used as the hard template, and cetyltrimethylammonium bromide as the soft template to synthesize hollow mesoporous silica spheres (HMSs). Then, phosphate groups were grafted by the post-grafting method to synthesize PHMSs. The characterization of the materials was investigated by scanning electron microscopy, Fourier-transform infrared spectroscopy, transmission electron microscopy methods, and Beckman Laser laser particle size analyzer. The results showed that PHMSs have a regular mesoporous structure, monodisperse particle size distribution, and a stable shell-core structure. The CS synthesized in this study with glucose precursors is superior in the uniformity of particle size to sucrose and starch precursors. The addition of ammonia could accelerate the hydrothermal polymerization of carbon microspheres during the hydrothermal reaction. The reducing conditions provided by the hydrothermal heat promoted the carbonization reaction and increased the average particle size of the carbon microspheres from 395 nm to 11.5 μm. The average pore size of the synthesized HMSs is 2.5 nm. The hollowness of the hollow spheres can be controlled by adjusting the particle size of the hard template. The content of each component in the reaction system has a great influence on the shell thickness and pore size of the formed HMSs. Infrared spectroscopy showed that on the surface of HMSs, the phosphate groups were highly compatible with the silanol groups. The adsorption experiment results showed that PHMSs have high adsorption of Sb(III) with an initial concentration of 100 μg L–1 and can be used as an effective adsorbent for trace amounts of antimony(III) in water. The maximum adsorption capacity is 87.46 mg g–1, the maximum removal rate is 96.02% and the adsorption equilibrium time is 6 h. The fitting degree of the Langmuir equation is 99.96%, indicating that the chemical adsorption is the main adsorption mechanism. © 2020 Desalination Publications.
语种：
英文
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Risk Analysis of Out-drum Mixing Cement Solidification by HAZOP and Risk Matrix
作者：
Wang, Rui;Wang, Jingsong*
期刊：
Annals of Nuclear Energy ,2020年147:107679 ISSN：0306-4549
通讯作者：
Wang, Jingsong
作者机构：
[Wang, Rui] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Wang, Jingsong] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Wang, Jingsong] U;Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Cement solidification;HAZOP;Out-drum mixing;Risk analysis;Risk matrix
摘要：
Due to the particularity and complexity of cement solidification, radioactive waste may be released and diffused, causing serious radioactive hazards to equipment, operators and environment. In this study, hazard and operability analysis (HAZOP) and risk matrix were combined to identify and evaluate risks of out-drum mixing cement solidification. Firstly, based on concept and steps of HAZOP, the meaningful deviations of out-drum mixing equipment were described by appropriate guidewords and process parameters. Secondly, the causes and consequences of deviation, and the safety measures were investigated. Finally risk matrix was applied to classify risk level and assess risk of the identified deviation. Results indicated that low level of wet waste in storage and weighing tank, less flow of wet waste in feeding pipe of storage and weighing tank, mixer without mixing speed, high transport speed and additional location of drum are unacceptable risks. The relevant safety suggestions were given to reduce or eliminate potential hazards. © 2020 Elsevier Ltd
语种：
英文
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Fenton预处理突发苯胺类污染河水试验及现场工程应急处置
作者：
殷梦蕾;陈思莉;黄大伟;张政科;王劲松;...
期刊：
水电能源科学 ,2020年38(11):45-49 ISSN：1000-7709
作者机构：
南华大学土木工程学院,湖南衡阳421001;生态环境部华南环境科学研究所,广东广州510530;[陈思莉; 虢清伟; 黄大伟; 张政科] 华南环境科学研究所;[王劲松; 殷梦蕾] 南华大学
关键词：
Fenton预处理;苯胺;污染河水;应急处置
摘要：
针对某化工园区爆炸事故中高苯胺类、高CODCr污染河段水体,提出Fenton氧化法进行预处理,在单因素试验的基础上进行正交试验,研究了初始pH值、(H2O2)/(Fe2+)摩尔比、H2O2与Fe2+投加量及反应时间对受污染水体处理效果的影响.试验结果表明,当反应时间为60 min、初始pH值为5、(H2O2)/(Fe2+)摩尔比为8∶1、投加量为(CODCr)/(H2O2)质量比1∶2时,处理效果最佳,出水苯胺类未检出,CODCr可降至119 mg/L,去除率达79.6％.根据试验结果指导现场工程应急处置的实施,运行后出水苯胺类浓度可降至0.31～0.77 mg/L,CODCr降至235～301 mg/L,达到园区原有污水处理系统进水水质要求.
语种：
中文
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三聚氰胺减水剂对碱激发超细偏高岭土基地质聚合物流动性和力学性能的影响
作者：
欧阳高尚;王劲松;董腾;吴廉洁;张怀宇
期刊：
硅酸盐通报 ,2020年39(6):1828-1834 ISSN：1001-1625
作者机构：
南华大学土木工程学院;南华大学长三角（诸暨）研究院;[张怀宇] 中国市政工程中南设计研究总院有限公司;[吴廉洁; 欧阳高尚; 王劲松; 董腾] 南华大学
关键词：
超细偏高岭土;流动性;凝结时间;三聚氰胺减水剂
摘要：
以超细偏高岭土(UMK)为原材料,研究了三聚氰胺减水剂(MWR)对碱激发偏高岭土基地质聚合物的流动性能和力学性能的影响.采用流变学方法表征地聚物净浆的流动性,结合凝结时间实验、含水率实验和力学性能实验研究了MWR在地质聚合反应中的作用.通过SEM、FTIR和XRD等分析手段研究反应产物的微观形貌、化学结构和矿物组成,以揭示MWR的作用机理.结果 表明,MWR与UMK相容性不好,MWR掺量为2wt％和4wt％时对地聚物净浆的流动性有一定改善,但掺量6wt％时明显促进了净浆的流动度损失.MWR的掺入改变了地聚物的孔隙结构,促进了水分的散失,从而使抗压强度随MWR掺量的增大而先减小后有所回升.
语种：
中文
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Structural and mechanical properties of geopolymers made of aluminosilicate powder with different SiO2/Al2O3 ratio: Molecular dynamics simulation and microstructural experimental study
作者：
Wang, Rui;Wang, Jingsong* ;Dong, Teng;Ouyang, Gaoshang
期刊：
Construction and Building Materials ,2020年240:117935 ISSN：0950-0618
通讯作者：
Wang, Jingsong
作者机构：
[Wang, Rui] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Ouyang, Gaoshang; Wang, Jingsong; Dong, Teng] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.;[Wang, Jingsong] Univ South China, Yangtze Delta Res Inst, Zhuji 311800, Zhejiang, Peoples R China.
通讯机构：
[Wang, Jingsong] U;Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Aluminosilicate powder;Geopolymer;Mechanical properties;Molecular dynamics simulation;SiO2/Al2O3 ratio;Structural properties
摘要：
In this study, the impacts of different SiO2/Al2O3 ratio on the molecular structural and mechanical properties of geopolymer were investigated by molecular dynamics and experiment. Complex composition of raw materials may affect the analysis of geopolymer gels. Therefore, pure aluminosilicate powder with different SiO2/Al2O3 ratio were synthesized by sol-gel method firstly. Then the prepared powder mixed with the activating agent of NaOH and sodium silicate to prepare geopolymer. After 28d curing age, chemical composition and crystalline phase of geopolymer were characterized by X-ray fluorescence(XRF) and X-ray Diffraction (XRD) respectively. Based on the above characterization results of geopolymer gel, different SiO2/Al2O3 ratio of molecular models were built. Finally, molecular dynamics were performed on the molecular models to study energy and temperature, simulated XRD, radial distribution function (RDF), distribution of bond length and bond angle and elastic modulus. Results showed that with the increases of SiO2/Al2O3 ratio, both stability of molecular structure and mechanical properties of geopolymer were decreased. © 2019 Elsevier Ltd
语种：
英文
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“双一流”背景下的建筑与土木工程专业专业学位研究生产学研一体化培养模式
作者：
杨金辉;杨斌;罗清海;王劲松;曾涛涛;...
期刊：
西部素质教育 ,2019年(23):176-177 ISSN：2095-6401
作者机构：
南华大学土木工程学院
关键词：
“双一流”;建筑与土木工程专业;专业学位研究生;产学研一体化培养模式
摘要：
文章首先分析了国内外专业研究生培养模式的研究概况,然后论述了"双一流"背景下建筑与土木工程专业专业硕士培养存在的问题,最后提出了"双一流"背景下的建筑与土木工程专业专业学位研究生产学研一体化培养模式的构建。
语种：
中文
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流域溢油污染中常见吸油材料吸附效果研究
作者：
孙兰;虢清伟;陈尧;常莎;王劲松;...
期刊：
水处理技术 ,2019年45(9):53-56 ISSN：1000-3770
作者机构：
南华大学土木工程学院,湖南衡阳421001;生态环境部华南环境科学研究所,广东广州510530;[陈思莉; 常莎; 虢清伟; 陈尧] 华南环境科学研究所;[孙兰; 王劲松] 南华大学
关键词：
吸油材料;吸附;石油类污染物;溢油;除油率
摘要：
静态条件下,比较探究了不同温度条件5种常见吸油材料(无纺布、吸油毡、海绵、麻袋、活性炭)对油的质量浓度约为140 mg/L的各石油类污染物的吸附效果。结果表明,各常见吸油材料都能达到瞬时吸附石油类污染物的效果;污水温度对各种吸油材料的吸附效果有较大的影响,温度、石油污染物种类的不同影响效果不同;其中,无纺布的吸油能力最好,吸油量可达254.7 mg/g。在实际流域溢油污染应急过程中,可根据其污染石油的含量,以及污染水源的性质合理选择吸油材料,更大效率的提高应急处置能力。
语种：
中文
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隔氧水热反应制备单分散炭微球的实验研究
作者：
晏垚;王劲松;虢清伟;卓琼芳;揭波;...
期刊：
现代化工 ,2018年38(8):85-89 ISSN：0253-4320
通讯作者：
Wang, J.-S.
作者机构：
南华大学土木工程学院, 湖南, 衡阳, 421001;环境保护部华南环境科学研究所, 广东, 广州, 510655;[晏垚; 王劲松; 韩科昌] 南华大学土木工程学院, 湖南, 衡阳, 421001;[虢清伟; 卓琼芳; 揭波] 环境保护部华南环境科学研究所, 广东, 广州, 510655
通讯机构：
School of Civil Engineering, University of South China, Hengyang, China
关键词：
炭微球;氮气保护;氨水辅助;水热碳化法;溶解氧
摘要：
以葡萄糖为前驱物,在氮气保护氨水辅助的隔氧体系中水热合成单分散炭微球。考察了不同碳源、配料种类、氨水浓度和通氮时间对炭微球粒径分布和形貌的影响。采用SEM、BET、XRD、FT-IR、XPS、粒度仪对炭微球的形貌和成分进行表征,用差热法分析了炭微球的热稳定性。结果表明,氨水浓度与通氮气保护对炭微球的形貌与粒径分布影响显著,在0.1 g/mL葡萄糖溶液、0.05 mol/L氨水溶液和以200 cm~3/min的速率通入氮气保护20 min的实验条件下,可制备出平均粒径为11.5 μm且表面富含官能团-OH、C=O、-COOH的单分散炭微球。
语种：
中文
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Effects of Aquatic Plants in Constructed Wetlands to Removal of Water Pollutants
作者：
Duan, Zhiyong* ;Xie, Shuibo;Chen, Zhenfu;Wang, Jingsong;Li, Zhi
作者机构：
[Wang, Jingsong; Xie, Shuibo; Chen, Zhenfu; Li, Zhi; Duan, Zhiyong] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
18th Annual World Environmental and Water Resources Congress of the Environmental-and-Water-Resources-Institute (EWRI)
会议时间：
JUN 03-07, 2018
会议地点：
Minneapolis, MN
会议主办单位：
[Duan, Zhiyong;Xie, Shuibo;Chen, Zhenfu;Wang, Jingsong;Li, Zhi] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
World Environmental and Water Resources Congress 2018: Water, Wastewater, and Stormwater; Urban Watershed Management; Municipal Water Infrastructure; and Desalination and Water Reuse<&wdkj&>World Environmental and Water Resources Congress 2018: Water, Wastewater, and Stormwater; Urban Watershed Management; Municipal Water Infrastructure; and Desalination and Water Reuse<&wdkj&>World Environmental and Water Resources Congress 2018: Water, Wastewater, and Stormwater; Urban Watershed Management; Municipal Water Infrastructure; and Desalination and Water Reuse
摘要：
Constructed wetlands technology is an important type of wastewater treatment technologies. Compared with other wastewater treatment technologies, the aquatic plants are special components in constructed wetlands for water pollutants removal. However, the comprehensive functions of aquatic plants in constructed wetlands were little emphasized before. In this study, the comprehensive functions and effects of aquatic plants in constructed wetlands to the water pollutants removal are investigated. Multiple common used aquatic plants are compared with their biomass, nitrogen and phosphorus absorption capacity, and oxygen secretion by root systems. These are used to investigate the mechanisms of the functions of aquatic plants in water pollutants removal in constructed wetlands. In this study it is found different types of aquatic plants have different comparable advantages in biomass, nitrogen and phosphorus absorption capacity, and oxygen secretion by root systems. The aquatic plants in constructed wetlands provide dissolved oxygen to the environment around their roots. The aquatic plants themselves have absorption for the nitrogen and phosphorus to directly removal them from the wastewater. Their roots together with the fillers in the constructed wetlands establish the habitat environment for the microorganisms which degrade the water pollutants. The aquatic plants play important and special roles in constructed wetlands for wastewater treatment. These findings can be used for the improvement of the water pollutants removal efficiency in constructed wetlands. The improved constructed wetlands can be used for eutrophication control with higher efficiency.
语种：
英文
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地方高校建筑与土木工程专业全日制专业学位硕士研究生培养探索
作者：
杨金辉;杨斌;谢水波;罗清海;王劲松;...
期刊：
西部素质教育 ,2018年4(24):146-147 ISSN：2095-6401
作者机构：
南华大学土木工程学院,湖南 衡阳,421001;[杨金辉; 王劲松; 杨斌; 康四军; 谢水波; 黎传书; 罗清海] 南华大学
关键词：
地方高校;建筑与土木工程专业;全日制专业学位硕士研究生
摘要：
文章首先阐述了地方高校研究生教育资源和生源特点,然后提出了地方高校建筑与土木工程专业全日制专业学位硕士研究生培养目标,最后明确了地方高校建筑与土木工程专业全日制专业学位硕士研究生培养方式,从导师制度、课程设置、教学方式、实践环节、过程考核五方面进行了论述。
语种：
中文
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改性烟末生物质吸附剂对水中NO_3~-的吸附特性与机理
作者：
康四军;杨金辉;杨斌;谢水波;王劲松;...
期刊：
农业环境科学学报 ,2018年37(9):2014-2020 ISSN：1672-2043
作者机构：
[康四军; 杨金辉; 谢水波; 王劲松; 黎传书] School of Civil Engineering, University of South China, Hengyang, 421001, China;[杨斌] Nuclear Sanli Technology Co., Ltd., University of South China, Hengyang, 421001, China
关键词：
改性烟末生物质吸附剂;吸附特性;吸附机理
摘要：
为探究改性烟末生物质吸附剂对水中NO_3~-的吸附机理,以烟末为原料,通过吡啶催化法改性制备改性烟末生物质吸附剂(Modified Tobacco Powder Biomass Adsorbents,MTPBA),吸附水中的NO_3~-。根据X-射线衍射(XRD)、扫描电子显微镜(SEM)、能谱分析(EDS)和傅里叶变换红外光谱(FTIR)对MTPBA的表征分析,结果显示:烟末改性后,表面Zeta电位、孔隙结构和纤维素上官能团的变化有利于吸附NO_3~-。采用静态吸附实验方法,研究MTPBA对水中NO_3~-的吸附特性,结果表明:当NO_3~-初始浓度为30 mg·L~(-1), MTPBA投加量为4.0 g·L~(-1),溶液pH=6.68,吸附时间为30 min时,MTPBA对水中NO_3~-吸附效果最佳。吸附过程与准二级动力学模型(R2>0.99)、Langmuir和Freundlich等温模型(R2>0.92)能较好地拟合,Langmuir拟合结果表明:MTPBA对水中NO_3~-有较高的吸附容量(Qmax=28.458 mg·g~(-1)),优于改性蒙脱石和生物炭。研究表明:MTPBA具有较高的吸附容量,优于改性蒙脱石和生物炭,其对NO_3~-的吸附机理以与叔胺基团的静电及离子交换吸附为主,多孔结构材料的物理吸附并存。
语种：
中文
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基于CT数字图像处理的沥青混合料车辙试件空隙特征测定
作者：
卢恺;王劲松;陈振富;吴旦;刘清
期刊：
公路工程 ,2017年42(6):59-63 ISSN：1674-0610
作者机构：
南华大学土木工程学院,湖南衡阳,421001;[陈振富; 王劲松; 卢恺; 吴旦; 刘清] 南华大学
关键词：
图像处理;车辙试件;空隙特征
摘要：
为了研究沥青混合料标准车辙试件试验前后空隙分布特征,采用医用CT扫描设备获取了大量车辙试件图像,将图像导入Matlab图像处理软件进行图像增强处理,采用大津法（OTSU）选取全局阈值实现图像的分割。在此基础上,对比SBS改性沥青混合料和普通沥青混合料车辙试件空隙特征及其变化的差异。结果表明：采用本方法测定的空隙率均值与实验室测量的空隙率一致,并且本方法能从细观层面反映空隙分布特征。轮碾成型原始车辙试件的空隙率在轮载作用处偏小,二维平面上空隙面积在10 mm~2以下居多;车辙试验后,辙槽处空隙率大幅度下降,普通沥青混合料试件车辙深度更深,空隙数量减少更明显,空隙特征的变化主要体现在小微空隙上。
语种：
中文
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NDA-36树脂处理含铜、镍电镀废水工艺研究
作者：
韩科昌;王劲松;张玮铭;孙平;虢清伟;...
期刊：
科学技术与工程 ,2017年17(17):361-365 ISSN：1671-1815
作者机构：
南华大学土木工程学院;南京大学环境学院;[虢清伟] 环境保护部华南科学研究所;[晏垚; 韩科昌; 王劲松] 南华大学;[孙平; 张玮铭] 南京大学
关键词：
NDA-36树脂;离子交换;电镀废水;重金属离子
摘要：
通过采用吸附及再生的实验方法,针对性地研究了NDA-36树脂对龙溪电镀基地实际废水中铜、镍离子的富集回收效果。结果显示,NDA-36树脂在p H依次为3、5,温度为313 K时,对Cu（Ⅱ）、Ni（Ⅱ）的吸附效果达到最佳。Langmuir等温方程对等温吸附线具有较好的拟合效果,拟合分析结果表明NDA-36树脂对Cu（Ⅱ）、Ni（Ⅱ）的最大饱和吸附量分别达到1.971mmol/g和1.130 mmol/g。动态吸附条件下,当出水分别为3 BV、1 BV时Cu（Ⅱ）、Ni（Ⅱ）的依次穿透点。再生实验使Cu（Ⅱ）、Ni（Ⅱ）再生液最高浓度分别提高到了初始浓度的2.5倍、1.75倍,且回收率均接近100%。该实验为NDA-36树脂在龙溪电镀基地铜、镍的回收工艺提供了实验和数据支持。
语种：
中文
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Research on Evaluating Index of Indoor Rutting Test of Asphalt Mixture
作者：
Kai LU;Jing-song WANG;Zhi-heng ZHANG;Xiao-feng YANG
期刊：
DEStech Transactions on Computer Science and Engineering ,2017年(mcsse):79-82
作者机构：
[Kai LU; Jing-song WANG; Zhi-heng ZHANG; Xiao-feng YANG] School of Civil Engineering,University of South China
会议名称：
2016 International Conference on Mathematical, Computational and Statistical Sciences and Engineering（MCSSE 2016）
会议时间：
2016-10-30
会议地点：
中国广东深圳
摘要：
To test the mixture of different thickness and different asphalt to find the problem of rutting test and evaluation index, so as to provide some reference for the improvement of index. The influence o
语种：
英文
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电解法处理电镀含镍浓缩废液的试验研究
作者：
熊正为;陈齐玮;王劲松;张炜铭;虢清伟;...
期刊：
工业水处理 ,2017年37(8):70-73,104 ISSN：1005-829X
作者机构：
南华大学土木工程学院, 湖南, 衡阳, 421001;南京大学环境学院, 江苏, 南京, 210046;环境保护部华南环境科学研究所, 广东, 广州, 510655;湖南大学土木工程学院, 湖南, 长沙, 410000;[熊正为; 陈齐玮; 王劲松] 南华大学土木工程学院, 湖南, 衡阳, 421001
关键词：
电镀废水;镍;电解法;回收
摘要：
以电解法处理含镍浓缩液并回收镍,考察了电流强度、镍离子浓度、温度、pH和缓冲溶液对镍回收效果的影响。结果显示,以钌铱涂层钛板为阳极,在极距为20 mm、电流15 A、温度50 ℃、镍离子质量浓度为20 g/L并通气搅拌的条件下,镍回收率最高达到85.1%,相应的电流效率为51.8%。正交试验结果表明,镍回收率影响因素的大小顺序是电流>镍离子浓度>pH>温度。
语种：
中文
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