关键词:涂层技术;冰雪-路面粘结;疏水性;融雪除冰 中图分类号:U416.2 文献标识码:B文章编号:1005-8249(2018)04-0104-06 Ma Qing’, Zheng Zhineng’, Ling Tianqing (1.School of Civil EngineeringChongqing Jiaotong University,Chongqing,400074; 2. National and Local Joint Engineering Laboratory of Traffic Civil Engineering Material, Chongqing Jiaotong University, Chongqing, 400074) Abstrat:hlingndeingatingwgodaliclpreeingnwfrand thefeldsfArontisnAstrnatimunicationandlectricityWithtedeelpmetf thecotininustyand theeepconcf functional preventive maintenanc,the technology ofinhibiting/rmoving cand snow cotinghasbeea newresearchdirectionn the ice andsnwhlogyhrehpressfpaventnlinganddengotingmatrialssntrduedandthueriritfcon methdcd wiivnldisusIsin performance evaluation of ice and snow are deseribed, and a new and smle device for mulating the icebreaking test is propose. Keyword:coating technology;bondingbetweeneand pavement; snowmelting deicing 冬季或初春在我国北方及南方湿冷地区,路面 寿命等问题(。
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2015 NO.1
专题研究
基于水化产物分析的煤研石的活性评价 Evaluation of Pozzolanic Activity of Thermal Activated Coal Gangue based on the Hydration Output
顾炳伟',王培铭2 (1.淮海工学院土木工程学院,江苏连云港222005;2.同济大学先进土木工程材料教育部重点实验室,上海200092) 摘要:借助于X射线衍射分析(XRD)、示差扫描量热分析(DSC)、分析化学的方法对热激发煤研石一Ca(OH)2 体系的水化产物、Ca(OH):含量及热激发煤研石一水泥体系的水化产物、化学结合水量进行测定,结合不同煤研石体系 的宏观力学性质,分析水化产物、力学性质与热激发煤研石活性之间的关系,提出了基于水化产物分析的煤研石活性评 价指标。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013NO.1 专题研究 基于数字图像法的新老混凝土粘结面粗糙度表征 Characterization of Roughness of Fresh -old Concrete Bonding Interface Based on Method of Digital Image 张雄12,张蕾12 (1.同济大学材料科学与工程学院,上海201804;2.同济大学建材研究所先进土木 工程材料教育部重点实验室,上海201804) 摘要:提出了一种制作新老混凝土粘结界面人造祖糙度的方法,并基于分形理论对用数字图像法获得的粗糙界面 形貌进行处理,以分形维数表征界面的粗糙度;再利用自编的Matlab程序实现界面的三维重组,验证了数字图像法的准 确性;最后,研究了界面粗糙度与新老混凝土粘结性能的相关性.结果表明:新老混凝土粘结性能与界面分形维数呈正 相关,存在近似关系R=aDb. 关键词:新老混凝土;粗糙度;分形理论;三维重组;粘结性能 中图分类号:TU528.59 文献标识码:A文章编号:1005-8249(2013)01-0009-05 ZHANG Xiong.2 ZHANG Leil.2 (1.School fo Materials Science and Engineering Tongji University Shanghai 201804 China;2.Ministry of Education Key Laboratory of Advanced Civil Engineering Materials Building Materials Institute Tongji University Shanghai 201804 China) Abstract:An approach to getting artificial roughness of fresh-old concrete bonding interface is proposed and based on fractal theory the mophology data of which collected by digital image method is processed then the artificial roughness is characterized in fractal dimension;After that the three-dimensional reorganization of the interface is achieved by Matlab program verifing the accuracy of the digital image method;Final- ly the correlation of the roughness and the the bonding propertlys of fresh old concrete are investigated.The results show that there is a positive correlation of fractal dimension aund interfacial bonding properties which can be formulated as R=aDb. Key words:fresh-old concrete roughness fra...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013N0.6 专题研究 基于SPSS回归分析的气孔结构对引气混凝士强度影响分析 Analysis of Impact of Pore Structure on Air-Entraining Concrete Strength Based on SPSS Regression Analysis 高辉,张雄,张永娟 (同济大学先进土木工程材料教育部重点实验室,上海201804) 摘要:为便于高性能混凝土引气剂的开发和应用,采用定量体视学图像分析法,测定掺有9种引气剂的混凝土28d 气孔结构参数(孔径范围10um~1600um) 运用统计分析程序SPSS对影响混凝土抗压强度比的分级孔隙率进行多元线 性回归,得到相关系数高达0.971的多元线性回归方程及各分级孔隙率对抗压强度比的影响权重. 关键词:气孔结构;抗压强度;线性回归分析 中图分类号:TU.528.042 文献标识码:A 文章编号:1005-8249(2013)06-0003-04 Gao Hui Zhang Xiong Zhang Yong-juan (Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education Tongji University Shanghai 201804 China) Abstract:To facilitate the development and application of air entraining agents AEA)in the high performance conerete pore structure pa- rameters pore size range of 10-1600um)of 28d concrete added with nine types of air entraining agents were measured by image analysis method. Meanwhile the relationship between the pore size distribution and the strength of concrete was studied by multiple linear regression analysis meth- ods.The multiple linear regression equation was established whose correlation coefficient was 0.971 and the weight of hierarchical porosity affect- ing the pressive strength ratio was also obtained. Key words:pore structure;pressive strength;linear regression analysis 英国人在1865年修建世界上第一条水泥混凝土中,研究较多的是总孔隙率对混凝土强度的影响.有 路面,至今已有146年历史.水泥混凝土路面具有强 很多强度与总孔隙率之间关系的半经验公式5-,例 度高、抗超载能力强、寿命长、磨损小、施工简单、环境 如:反映强度-孔隙率关系的幂函数关系式、指数关系 适应能力强、经济性好等优点,是高等级公路最主要的...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018N0.4 试验与应用 基于ABAQUS粉煤灰路堤边坡稳定性研究 Study on Stability of Embankment Slope based on Abaqus Fly Ash 杨琳 (西安铁路职业技术学院,陕西西安710600) 摘要:采用ABAQUS通用有限元软件对粉煤灰路堤边坡稳定性进行研究,采用强度折减系数法的方法进行计算, 通过对实际工况路堤边坡稳定性和变形的分析,并且与特征部位变形曲线结果进行对比,发现强度折减系数法模型的精 度较高,能够满足工程仿真试验的要求.本文研究可作为进一步对以碎石粉煤灰为填料的路堤边坡稳定性分析的基础. 关键词:有限元;稳定性;粉煤灰;强度折减系数法 中图分类号:U416.1*2 文献标识码:A 文章编号:1005-8249(2018)04-0039-05 Yang Lin Xi'an Railway Vocational and Technical College Xi'an 710600) Abstract:With the Abaqus general finite element software to study the stability of fly ash embankment slope uses the method of strength reduction coefficient to calculate through the analysis of the stability and deformation of the embankment slope in the actual working condition. and pared with the deformation curve result of the characteristic part it is found that the strength reduction coefficient method model can meet the requirements of engineering simulation experiment.This paper provides the basis on the stability analysis of embankment slope with crushed stone fly ash as filler. Keywords:finite element:stability:fly ash:strength reduction coefficient method 随着技术的不断发展,粉煤灰在建造工程中应 1模型建立 用越来越广,研究发现利用粉煤灰填筑高等级公路 路堤,有重大的技术和经济效益.研究粉煤灰建 1.1软件模型建立及假设 造公路路堤的稳定性是目前的热门话题,目前研究 利用ABAQUS软件,根据路堤的实际情况,采 稳定性的方法较多,其中有限元是目前研究学者较为 用1:1.5边坡比,将坡体的填充材料简化成弹塑性 认同的一种方法.随着计算机技术的不断发展,一 材料,对于模型的建立的准则是应与实际情况相一 些计算机软件在研究中起到了不可忽视的作用,本 致,采用MohrCoulomb作为本构模型[2.经过相关 文采用ABAQUS有限元软件,选取沪嘉、萃松两条 研究得到分层填筑和一次性填筑对于路堤稳定性的 高速公路作为试验路段,对代表性路堤用各种边坡...
关键词:阻锈剂;双层氢氧化物;盐水浸溃法;硬化砂浆法 中图分类号:TU528.042*.6文献标识码:A文章编号:1005-8249(2018)01-0015-06 Su Xuwen', Xue Bingyong*, Chen Hang*, Chen Wenyu? 1.South China capital construction department, Nanjing Uiversity of Aronautis &Astronatics, Jiansu, Nanjing 210016,Chin; 2. Civil engineering department, Hbei University ofWater Resources and Electric Engineering, Cangzhou, Hebei 061000, China; 3.School of civil engineering,Southwest JiaoTong University,ichuan, Chengdu 61003,China Abstract: It is observed that double hydroxides (LHD) , double hydroxides (LHO)afer the calcination, contrast rust inhibitor NaNO、K18、blank group 3 group and to LHO as the main material of homemade nust inhibitor ZY1~ZY3 a total of three groups ofreinforcedust abilityby salt watermersionmethodand hardene mortarhe results howthataccording to thespecifcation JGJ/T1922009, evaluated in accordance with corroded reinforcement rust inhibitor effect of rust,ust inhibitor has better ZY1 ZY3、LHO,more than NaNO、K18, while inhibiting effectiveness ZY2 poor.The results of adding 3% NaCl hardened mortar methodshow,ZY3has goodrust results when content 3%、4%,the approprite content of 3%; rust inhbitorZY1and LHhas good resistance when having a rust efect and 4% ash rust good effect,the appropriate content of 4%; ...
关键词:水煤浆气化炉;飞灰;活性炭;吸附材料 中图分类号:X784文献标识码:A文章编号:1005-8249(2017)03-0012-04 Zhu Renshuai, Lv Feiyong, Tang Xi, Sun Shuai, Zhang Xianglan ScholofChemical and Enviromnal Engineering,ChinUivesiy Mning adTechogBejing ),Bejing 18,Chna) Abstract In this ay afm cwt gasifeMngoliawa usd asrarial t padbeh l loss on ignition of fly ash in coalwater slurry gasifier is 28.56%, which contains a lot of unburned carbon. The iodine adsorption capacity of active arbon inreed with the inree f carbonization tie and ativationtme, nd the iodi adsptin capacity reached 82.19 m/Th posite adrbent waspreared bfyah frm alwaterry gasr, andtheremval rte f copenwas 0.% Keyword: coalwater urry gasifier; fly ash; acticarbn; adsorptnmaterial 混水煤浆气化技术是煤气化的重要技术之一,李振杰等人利用高碳粉煤灰制备建筑材料[+”];李国 在水煤浆气化领域,含多喷嘴、GE、多元料浆等以斌浮选出粉煤灰中残碳制备出性能较好的活性炭(*。
粉煤灰综合利用 2014NO.4 FLYASHCOMPREHENSIVEUTILIZATION 试验与应用 几种小分子酯类有机物对矿渣粉磨性能及矿渣水泥 强度的影响* The Influence of Several Small Molecule Esters on the Performance of Grinding and Strength of Slag 林辉,王学光,王栋民,郑大鹏,殷景阁,赵计辉,简险峰 (中国矿业大学(北京),北京100083) 摘要:从筛余量、比表面积、粒径分布、胶砂强度、SEM分析等方面研究了几种小分子酯类有机物对矿渣粉磨和矿 渣水泥强度的影响。
关键词:矿渣;粉磨;酯类物质;水泥;胶砂强度 中图分类号:TU528.0文献标识码:A文章编号:1005-8249(2014)04-0006-04 Lin Hui, Wang Xue-guang, Wang Dong-min,Zheng Da-peng, Yin Jing-ge Zhao Jihui Jian Xian-feng (School of China University of Mining & Technology,Beijing,100083,China) Abstract: idere h aspes f semarnif ufae arerice size distbto,ta stenth a the aalysf analyzes th inluenee ofeveral smallmlecule sters n the perfomance of grinding and strengthf slag.The results show that several ster can redth ieifcadth pi tt μchagodgingf slag. The longer f the chain length (expeet the symetric structure))and the more functional groups (the functional groups farther apart), the better grinding efeets the sters organic has.When the lengths of the chain are same, the infuence from number of the funetional groupshas a powerflheaing fese amkeh pdt slagnt gwllellwhich ntivelyprotheseh slag cement. Keywords: Slag;Grinding;Esers;CementMortar srength; 有效改善水泥混凝土拌合物的保水性和黏聚性,提高混助磨剂的使用不仅减少颗粒团聚,而且提高粉磨效率 凝土的后期强度,广泛应用于建材行业"。