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...
粉煤灰综合利用 2012 NO.2FLYASHCOMPREHENSIVEUTILIZATION
圆环法研究再生微粉混凝土收缩性能* Study on Shrinkage Performance of Concrete Containing Re-production Powder using Ring Test 高志楼',刘小艳²,左俊卿”,窦兰权,王新瑞2 (1.中交一航局第一工程有限公司,天津300456; 2.河海大学力学与材料学院,江苏南京210098; 3.同济大学先进土木工程材料教育部重点实验室,上海201804; 4.中冶天工上海十三冶建设有限公司城市建设分公司,上海200901) 摘要:采用圆环试验方法研究了再生微粉掺合料对混凝土收缩开裂趋势的影响,并测定了再生微粉混凝土早期 干燥收缩性能。
关键词:再生微粉:混凝土;收缩 中图分类号:TU528.0文献标识码:A文章编号:1005-8249(2012)02-0006-05 Gao Zhi-lou' , Liu Xiao-yan ,Zuo Jun-qing² ,Dou Lan-quan*, Wang Xin-rui (1. No. 1 Engineering Company LTD. of CCCC First Harbor Engineering Company Limited, Tianjin,300456; 2.College of Mechanics and Materials,Hohai University,Nanjing 210098; 3. Key Laboratory of Advanced Civil Enginering Materials (Tongi Universty), Ministry of Education, Shanghai 201804; 4. CMTCC SHANGHAI SHISANYE Construction Co.,Lud., Shanghai,China 200901) Abstract Inthis paer, rng tet was used to study the infueneof re-prodaction power on shnkage cracking trends of conre, and tet earl-age drying shinkge efane freprdtin er rete hw that the ring te canrebly nticacking p- ty of conerete caused by autogenous shrinkage and drying shrinkage, providing concrete a plete and uniform bound.Re-production powder can signifcantly redue the shrinkage crcking trends of onerete and the drying shnkage perfomance.The finer the powder was, the better was he anti-cracking property of concrete was Combined with Scanning electron microscopy. (SEM) the test was used to analyse the reason of reducing the shinkage cracking tredsby reprdutio pe. Key words;re-prduction powder; concrete;shrinkage performance
性问题备受关注。
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%; ...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2014 NO.3
试验与应用
利用钢渣制备外墙腻子 Preparation of putty for exterior wall by using steel slag
马娇丽、马小翠、张炎、王雪²、张劲 (1.上海宇培特种建材有限公司,上海,201804;2.上海大学,上海,200444) 摘要:采用固废物一钢渣微粉为主要原料,添加脱硫石膏、水泥及其它助剂充分混合搅拌制备一种低碳环保、耐 水性、耐碱性优异、粘结强度良好的干粉外墙腻子。
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"。
粉煤灰综合利用 2014 NO.4FLYASHCOMPREHENSIVEUTILIZATION 试验与应用
冶金污泥用于路基回填土的试验研究 Experimental Study of Utilization of Metallurgical Sludge as the Subgrade Backfill
施惠生12,杨安良²,郭晓路1.2 (1.同济大学先进土木工程材料教育部重点实验室,上海201804;2.同济大学环境材料研究所,上海201804)
摘要:以冶金污泥资源化为宗旨,对冶金污泥固化/稳定化后用于路基回填土进行研究。
关键词:再生混凝土;抗碳化;收缩徐变;抗高温性 中图分类号:TU528文献标识码:A文章编号:1005-8249(2018)04-0028-04 He Yan',Peng Lei²,Gao Hui, Shui Liangliang (1.School of Civil Engineering,Suzhou University of Scienee and Technology, Suzhou, 215011; 2. Shaanxi Provincial High performance concrete Engineering Laboratory, Shanxi Railway Engineering Vocational and Technical College, Weinan 714099; 3. Tianjin Institute of Architeetural Sciences, Tianjin 300193; 4. Shanghai municipal engineering design and research institute co., Ltd, Shanghai 200092) Abstract: Due to the randomness and variability of reeycled agregates,the microstructure as well as the performance o the reeycled concrete is more plex than that of the ordinary conerete. In this research, effets of reeycled aggregate substitution rate on the durability of recyeled concretwillalfaztannstatr showthatwhthustittinratfreyldggregatesesesthcabnation ethandthehinkaef threyled cretea signicantlftisttlatdtrhttfrgat 50%thmprsvestengthf threyl cnrenreasremarkablThyerymhanismsfthemrtruturean th pfmae werethrouhyanalyemf thrabiltyftheylnrtwhihprvideolidhrtialbassfthptizat regulation of the performance of recycled concrete. Keywordrcycledcncretcarbonizationresistanceshrinkageandcreepresistance tolevated tmerature 混凝土构筑物被拆除后,产生大量废弃混凝土, 堆积存放即占用大量土地,也严重污染着生态环境[12]。
关键词:养护条件;粉煤灰混凝土;抗压强度;抗折强度 中图分类号:TU528.041文献标识码:A文章编号:1005-8249(2018)02-0025-04 Leng Xin ( Xi'an vocational and technical institute Shan xi 710600) Abstract: In order to study the influence of curing conditions on the mechanical properties of fy ash conerete,the basic experiment of indoor soil ehanics is caried out under the condiions of the content oflyashbing 30%.The effec of curing mperature, curing hmidity and curing time on the pressive strength and the impact f flexural strength of the law is studied. The results show that with the increase of curing temperature from 20 °℃ to 100°℃ ,the pressive strength and flexural strength of concrete increases signifecantly a the initial stage and the curing tmperature is higherthan °℃ With the inreaseof curinghumidity, the hydration ratef fly ash concreteacclerates, and th pressve strength and flexural strength increases gradually, which canbe inreed by 22.45% and23.18%, repetivelyUdertheconditn of 80°℃ high temperature uring, the pressve strength and fexral strenth of ly ash concrete neases with the increaes of curing tie. Intensity changes exponential function. Keywords: curing conditions; fly ash concrete; pressive strength; fexural strength
设施建设,粉煤灰混凝土在我国取得广泛应用,同时,象,对不同养护温度以及养护时间条件下,混凝土抗 粉煤灰制备过程中,养护条件变化对粉煤灰混凝土压强度变化进行研究;阎培渝等“”对标准养护、高 力学特性的影响成为其应用过程中研究重点。
粉煤灰综合利用 2011NO.2 FLY ASH COMPREHENSIVE UTILIZATION 试 用 偶联剂对聚吡咯在漂珠表面负载效果的影响 The Effect of Silane Coupling Agent on the Polypyrrole-coated Fly Ash Cenospheres 康晋芳,王冰,李琴,翟建平 (污染控制与资源化国家重点实验室,南京大学环境工程系,南京210046) 摘要:以漂珠(FACs)为基体,利用y一氨丙基三乙氧基硅烷(APS)对其表面进行处理,通过化学原位案合的方法 实现了聚吡咯(PPY)的有效负载,成功合成了PPY/APS/FACs复合材料.采用SEM、XPS以及TG表征分析了复合材料 的表面形态、化学成分以及热稳定性等.结果表明,相对于FACs而言,用APS表面处理过的漂珠基复合材料其PPY负 载址增多且热稳定性明显提高.本文亦研究证明引人聚乙烯吡咯皖酮(PVP)有助于抑制聚吡略低聚体的产生,使漂珠 表面形成规整的聚吡略层. 关键词:漂珠;硅烷偶联剂;聚吡略;表面处理 中图分类号:TB34 文献标识码:A文章编号:1005-8249(2011)02-0020-04 Kang Jinfang.Wang Bing Li Qin Zhai Jianping (State Key Laboratory of Pollution Control and Resource Environment Engineering Department Nanjng University Nanjing 210046) Abstract:The hybrid polypyrrole-coated aminopropyltriethoxysilane-modified fly ash cenosphere posites PPY/APS/FACs)were successfully synthesized by in situ polymerization method.Morphology chemical elements and thermal stability of these fresh materials were characterized by SEM XPS and TG respectively.The results indicate that the loading amount of polypyrrole in PPY/APS/FACs is three times more than that in PPY/FACs.Compared with PPY/FACs the thermal stability of PPY/APS/FACs is significantly improved.In this research we also prove that the introduction of poly vingl pyrrolidone PVP)helps restraining the formation of pyrrole oligomers and forming ordered polypyrrole layers on the surface of FACs. Key words fly ash cenoephere;silane coupling agent polypyrrole;surface modification 电子工业及信息技术等产业的迅速发展...