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...
粉煤灰综合利用 2011 NO.6 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 以玄武岩废渣为集料研制胶粘防水砂浆的研究* Basalt Aggregate Adhesive Residue for the Development of Waterproof Mortar 孙福平,鞠润2,王玉萍,钱惠生,孙立营1 1.吉林省建材工业设计研究院,长春130062;2.长春市建筑工程质量检测中心,长春130000 摘要:玄武岩板材是我国近年来开发的新型建筑板材制品,主要用于内外墙体贴面,其胶粘砂浆以水泥砂浆为主. 由于玄武岩内部有孔洞会在在板材外墙装饰后局部产生泛碱现象,为此研制出了专用砂浆以提高粘结强度和防水性能, 满足玄武岩板材良好的装饰功能. 关键词:玄武岩板材;泛碱;砂浆 中图分类号:TV432*.4 文献标识码:A 文章编号:1005-8249(2011)06-0030-02 Sun Fu-ping Ju Run Wang Yu-ping Qian Hui-sheng Sun Li-ying (1.Building Materials Industry Design and Research Institute of Ji Lin Province Chang Chun 130062. 2.Changchun Construction Quality Testing Center Changchun 130000) Abstract:Basalt sheet in China in recent years developed a new type of building board products which mainly used for interior and exterior thoughtful face the adhesive mortar with cement mortar based Becawse basalt have intemal holes especially in decorative wall plate after local produce efflorescence phenomenon the development of special mortar to improve adhesion and water resistance good to meet the basalt plate deco- rative function. Key words:natural resources;basalt sheet;efflorescence;special mortar adhesive waterproof 通化中海玄武建筑材料有限公司是一家集玄武岩示范"(2006BAJ04A00)研究技术为主线,吉林省建材 开采、玄武岩板材加工、废料综合利用为一体创建的绿工业设计研究院组成项目组,研制出新产品主要指标 色环保型建材企业.由于玄武岩板材加工带来了年排 符合JC/T547-2005《陶瓷墙地砖胶粘剂》水泥基胶粘 量10万t锯粉废渣、20万t边角余料,2010年经过国 剂及JC/T1024-2007《墙体饰面砂浆》抗碱性要求. 家发改委批复,建设利用30万t玄武岩渣生产新型建 筑材料生产线,其中年产10万m3玄武岩废渣轻集料 1试验用原材料 砼小型空心砌块;锯粉废渣和边角余料经过破碎加工 (1)玄武岩废渣细集料和细粉:是由加工玄武岩板材 可成细集料,利用部...
第18卷第3期 过程工程学报 Vol.18 No.3 2018年6月 The Chinese Journal of Process Engineering June 2018 流动与传递 DOI: 10.12034/jissn.1009-606X.217298 不同放置角度的建筑装饰材料PMMA的火焰蔓延特性 黄新杰12",刘伟!,陈功建',王纯洁,唐刚,张浩!
(1.安徽工业大学建筑工程学院,安徽马鞍山243002:2.中国矿业大学安全工程学院,江苏徐州221116) 摘要:为揭示建筑装饰材料聚甲基丙烯酸甲酯(有机玻璃,PMMA)在不同放置角度下的火焰蔓延特性,通过自主搭建的小尺 寸火焰蔓延实验平台,研究了宽3cm、厚2mm的PMMA试样在不同放置角度下的火焰蔓延特性.结果表明,放置角度对PMMA 火焰蔓延过程中热解区域及预热区长度影响很大,由15°到30°及由-60°到-75°时(顺流火焰蔓延时放置角度为正,逆流火焰蔓延 时放置角度为负),平均火焰倾角增加幅度最大.顺流火焰蔓延的火焰长度随放置角度增加先略减小后逐渐增加,逆流火焰蔓延 的火焰长度随放置角度的绝对值增加而略减小.放置角度由0°到15°时,顺流火焰蔓延的平均速度呈跃变增长,逆流火焰蔓延的 平均速度随放置角度绝对值增加而略降低. 关键词:有机玻璃:放置角度:顺流火焰蔓延;逆流火焰蔓延:火焰蔓延速度 中图分类号:TQ325.7文献标识码:A文章编号:1009-606X(2018)03-0454-07 FlameSpread CharacteristicsoverBuildingDecorationMaterial of PMMA with DifferentPlaced Angles Xinjie HUANGI.2*,Wei LIU',Gongjian CHEN',Chunjie WANG,Gang TANG',Hao ZHANG (1.SchoolofCivilEngineeringandArchitecture,AnhuiUniversity ofTechnology.Maanshan,Anhui243002,China; 2.School ofSafetyEngineering,China University of Mining andTechnology,Xuzhou,Jiangsu221116,China) Abstract:In order to reveal the effect of placed angle onflame spread characteristics over polymethyl methacrylate (PMMA),a small-scale flame spread setup was established and then a series of flame spread experiments on PMMA samples with width 3 cm, thick influenced by placed angle through infrared image analysis.The average flame angle increased greatly when the placed angle changed from 15° to30°and from60°to75°forupward flame spread,the placed angle is positive,and for downward flame spread,the placed angle is negative).Meanwhile,for upward flame spread, the flame length decreased slowly and then increased with placed angle, however,fordownward flame spread,theflamelength decreased slightlywith the absolute value of the placed angle.Asfor theupward lame spreadwhntheplacedanglechangedfrom°t5thaverageflame spreadspeedwillincreasegreatlyAndforthedowward flame spread,the average flame spread speed decreased slightly with the absolutevalue of the placedangle. Key words:polymeth...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2010NO.4 专题研究 上海地区高等级公路沥青路面使用性能预测方法研究探讨* Study on the Asphalt Pavement Performance Prediction Methods of High-grade Highways 章华金,凌建明 (同济大学道路与交通工程教育部重点实验室,上海201804) 摘要:在分析评价现有路面使用性能预测模型的基础上,分别采用马尔可夫概率预测模型和灰色理论预测模型, 针对上海及类似地区高等级公路沥青路面进行使用性能预测分析.实例结果表明,马尔可夫概率预测模型受养护水平 与P℃频数的干扰较大而适用性不强,而灰色理论预测模型具有受测试数据样本量影响小、预测精度高及适用性强等优 点,因此更能适应上海及类似地区高等级公路沥青路面使用性能的预测,对公路养护决策具有重要意义. 关键词:高等级公路;沥青路面;路面使用性能预测;马尔可夫概率预测模型;灰色理论预测模型 中图分类号:U416.217 文献标识码:A 文章编号:1005-8249(2010)04-0005-04 Key Laboratory of Road and Traffie Engineering of the Ministry of Education Tongji University Shanghai 201804 China) Abstract:Based on the analysis and evaluation of existing pavement performance prediction models we make ase of Markov models and gray prediction model respectively to analyze the asphalt pavement performance of bigh-grade highways in Shanghai and the similar areas.The results show that the Markov model can be largely interfered by the conservation level and PCI frequency while the thearetical prediction of gry model is hardly affected by the test data of small sample size with high accuracy so that it can be widely used in Shanghai and the similar areas and is very important in desicion-making on rosd maintenance. Key words:high-grade highways;asphalt pavement:pwvement performance prediction:markov model:gray theory model 科学合理的路面使用性能预测模型有利于准确预 目前许多地区路面管理系统中采用较为完善的马 测路面使用性能的变化以及掌握路面进行大中修的最 尔可夫概率预测模型进行路面性能预测,鉴于上述所 佳时机,进而为制定养护计划提供可靠依据.国内外 介绍的各模型适用性,及上海及类似地区目前交通量 现有路...
应用研究 数字技米 与立用 AutoCAD及AutoLisp语言 在规划建筑红线放线测量中的应用 李玉洁 (福州市勘测院福建福州350003) 摘要:本文介绍了建筑红线放线,AutoCAD以及AutoLISP程序设计语言的一般概念.阐述了使用AutoCAD进行建筑红线放线内业处理的优 势.同时,文章还讨论了模板定制和AutoL ISP程序语言编程的方法,以进一步提高工作的效率和精度,增加成果的可读性,为成果多用提供了 基础条件. 关键词:建筑红线放线AutoCAD AutoLisp 中图分类号:TP391.72 文献标识码:A 文章编号:1007-9416(2012)05-0058-03 Application of AutoCAD and AutoLisp for building line setting out survey Li Yujie (FuZhou investigation and Surveying Institute Fuzhou 350003 Fujian) Abstract:This paper introduces general concepts of building line setting out survey AutoCAD and AutoLisp programming language expounds the advantages of AutoCAD using in data dealing of building line setting out survey.Meanwhile the methods of template customization and AutoLisp language programming are also discussed so that fiurther improve the efficiency and accuracy of work increase the readability of the results and provided basic conditions for result multi-function. keywords:building line setting out survey AutoCAD AutoLisp 1、建筑红线放线 图解建筑坐标,使用测量仪器配合带编程的计算器把坐标放到实 1.1概念 地这种原始的工作方法,需要耗费大量的时间和精力,并且精度也 规划建筑红线放线是城市测量的一个重要组成部分,是放线测 比较差. 量的一种特殊形式.因其面向建设单位,为建设单位提供建筑物的 1.4问题的提出 定位桩,作为基础放样和细部放样的依据,但同时又服务于规划管 随着科学的发展,建筑外形复杂多变,传统作业形式已经难以 理部门,为规划管理部门提供建筑与各规划控制线退距及建筑间距 满足实际工作中对效率和精度的要求.因此,选择一种可以快速提 的实际数据,因此它是一种带有规划监督性质的测量工作. 取图形数据,计算图形方位,并有强大图形编辑能力的软件,就成了 1.2工作的重点及雄点 解决这一矛盾的重要手段.AutoCAD作为这样一种软件走进我们 规划建筑红线放线测量必须依据规划管理部门制发的建筑红 的视线. 线图、规划管理部门或土地管理部门制发的用地红线图,建筑设计 单位设计的建筑平面施工图,把建筑按照建筑红线图中要求的位置 2、AutoCAD及AutoLisp语言简介 关系从图纸中“搬到”实地.为实现这一过程,并且达到规划监督的 Aut...