粉煤灰综合利用 2010No.1 FLY ASH COMPREHENSIVE UTILIZATION 路基处治土回弹模量试验研究 The Experimental Research of the Resilient Moduli of Cement Stabilized Soils Used in Highway Subgrades 夏宁,黄琴龙 (同济大学道路与机场工程系,上海200092) 摘要:对路基处治土水泥砂进行室内回弹模量试验,并对所得试验结果进行深入分析和探讨,为相关工程实践提 供数据支持。试验结果表明,水泥含量和压实度等对水泥砂的回弹模有较大的影响。 关键词:长江口细砂水泥砂;回弹模量 中分类号:U416.111 文献标识码:A 文章编号:1005-8249(2010)01-0018-03 ( TheRoad and Airport Engineering Department ,Tongji University ,Shanghai ,200092 ,China ) Abstract :This paper obtains the resilient moduli of cement stabilized soils through experiment study and the main content is following Through the experiment study ,what the paper can obtain through the experiment is that the relation between the degree of pection and the resili - ent moduli ,the relation between the cement content and resilient moduli .Through the definite conclusion of the experimental atudy ,the reliable can be provided for the relate construction . Key words :Changjiang delta fine sand ;cement stabilized soils ;resilient modulus 地处长江口崇明岛的崇明至启东长江公路通道工 程(上海段)是国家高速公路网中上海至西安高速公 1试验 路的重要组成部分,也是长三角高速公路网规划的城 按照《公路工程无机结合料稳定材料试验规程》 际通道,同时,上海长江隧桥与崇启通道共同组成沪 (JTJ057-94)中所述回弹模量室内试验方法进行试 (崇)苏通道,是在长江口一条完整的上海经崇明至江 验,试验方案简要步骤为: ...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018N.4 试验与应用 超高性能混凝土胶凝材料组分优化分析 Analysis of Components Optimization of Ultra High Performance Concrete Cementitious Materials 王越洋,欧忠文1,莫金川2,刘晋铭,王经纬 (1.陆军勤务学院军事设施系,重庆401311;2.海军勤务学院战勤指挥系,天津300450) 摘要:以海砂为骨料,对水泥、硅灰、纳米微珠、超细高炉矿渣粉、高效抗裂膨胀剂五种胶凝材料进行遵选及 配合比优化。采用混料设计中分析较为全面的单纯形重心设计的方法,对胶凝材料各掺量进行响应面分析及优化,建 立了可信度较高的回归模型,准确预测了超高性能混凝土达到最大28d强度时胶凝材料各组分的掺量。 关键词:胶凝材料;混凝土;水泥;硅灰;优化 中图分类号:TU528.31 文献标识码:A 文章编号:1005-8249(2018)04-0009-05 Wang Yueyang' ,Ou Zhongwen' ,Mo Jinchuan' ,Liu Jinming ,Wang Jingwei ( 1.Army Logistics University of PLA ,Chongqing 401311 ,Chongqing China ; 2 .Naval Logistics University ,Tianjin 300450 ,China ) Abstract :Using sea sand as aggregate ,five cementitious materials including cement ,silica fume ,nano micro-bead ,slag powder ,and anti - eracking admixture were selected and the mix ratio was optimized .Using the simplex center of gravity design method which is more prehensive in the analysis of mixed materials ,response surface analysis and optimization were performed on each dosage cementitious materials ,and a highly reliable regression model was established to accurately predict the maximum performance of ultra-high perf...
粉煤灰综合利用 2013.2 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 超高性能水泥基材料的制备及其强度影响因素研究 Study on the Preparation Methods of Ultra-high Performance Cement-based Material and its Strength Influence Factors 刘数华12,徐志惠2,张洁3,刘显军4 (1.建筑安全与环境国家重点实验室,北京100013 2.武汉大学水资源与水电工程科学国家重点试验室,武汉430072 3.湖北三箭建筑工程有限公司,随州441300; .随州九易通路桥公司随州,441300) 摘要超高性能水泥基材料是继高强、高性能混凝土之后,出现的一种力学性能、耐久性能都非常优越的新型建筑 材料。本文通过大量试验,分析水胶比、粉煤灰、养护条件对超高性能水泥基材料抗压强度的影响,并采用扫描电镜 (SEM)来探究矿物掺合料(主要是粉煤灰和玻璃粉)对硬化浆体微观形貌及水化产物影响的微观机理。研究结果表明: 超高性能水泥基材料的强度随水胶比的减小而增大;粉煤灰可以作为掺合料加入超高性能水泥基材料中,能改善RPC 微观结构,提高其性能;高温蒸养可显著提高超高性能水泥基材料的强度。 关键词:超高性能水泥基材料;强度;水胶比;粉煤灰;养护 中图分类号:TU528.31 文献标识码:文章编 文章编号:1005-8249(2013)02-0016-03 Liu Shuhua ,Xu Zhihui ,Zhang Jie ,Liu Xianjun ( 1.State Key Laboratory of Building Safety and Built Environment ,Beijing 100013 : 2 .State Key Laboratory of Water Resources and Hydropower Engineering Science ,Wuhan University ,Wuhan ,430072 ; 3 .Hubei Sanjian construction engineering Co .Ltd .Suizhou ,441300 : 4 .Suizhou Jiuyitong Roads and Bridges Co .Ltd .Suizhou ,441300 ) Abstract :The ultra-high performance cement-based material es after the high-strength and high-performance concrete which is a new kind of building material with ultra-...
201705 百家争鸣 当代化工研究 177 Intermediate 设计与优化电力企业物资编码标准 张梁 (华电国际十里泉发电厂物资公司山东277100) 摘要:改革开放以来,我国综合国力,经济实力得到了长足的发展,对于电力领域所取得的成就,大家也是有目共睹。本文围绕在快速 发展的电力行业中,物资编码管理所存在的问题亟待解决,深入思考结合工作经验提出了优化的对策。其中以某电力企业为案例,分别就 物资编码管理体系构建以及物资编码信息管理两方面着重分析,希望可以为相关人员提供参考 关键词:电力行业;物资编码标准设计 中图分类号:T 献标识码:A Design and Optimization of Material Coding Standard for Electric Power Industry Zhang Liang ( ShiLi-quan Power Plant Materials Company ,Huadian Power International ,Shandong ,277100 ) Abstract :Since the implementation of reform and opening-up policy ,China's prehensive national power has got considerable development and the achievement obtained in electric power field is obvious to all .In this paper ,around the fast-developed electric power industry ,we have found that the problems of materials coding management need urgent solution ,for which ,optimized countermeasures have been put forward on the basis of deep thinking and working experience .Taking one electric power enterprise as the case ,it has mainly taken analysis of the materials coding management system building and materials coding information management so that to provide reference for the related personnel . Key words :electric power in...
2016年2月上 第45卷第3期 CONSTRUCTION TECHNOLOGY doi:10.7672/sgjs2016030091 行车屋面变形缝构造施工技术 解小东,马广生,王亚坤,张喜红,徐玉春 (中建八局第一建设有限公司,山东济南250100 摘要]论述了一种新型行车屋面变形缝构造设计与施工方法。通过对行车屋面变形缝增加一系列构造措施,包 括减震、耐磨、接水与导流等构造,有效解决了现有设计和工艺上的不足,为克服同类工程质量通病,提供了可靠的 技术参考。 关键词】行车屋面;变形缝;减震;耐磨;施工技术 [中图分类号】TU761.11 文献标识码】A 文章编号1002-8498(2016)03-0091-05 Structural Construction Technology of Deformation Joints in Driving Roof Xie Xiaodong ,Ma Guangsheng ,Wang Yakun ,Zhang Xihong ,Xu Yuchun The First Company of China Eighth Engineering Bureau .Ji'nan ,Shandong 250100 ,China ) Abstract :A new type of structure design and construction of deformation joints in driving roof is introduced .It is effectively solved the deficiency of current design and construction through adding the structures of damping ,wear resistance and water diversion ,providing a reference for similar projects . Key words :driving roofs ;deformation joints ;damping ;wear resistant ;construction 0引言 排走。 当前国内建筑物的行车屋面变形缝存在功能 2)变形缝内的填充与防水传统的变形缝做 性缺陷,如接缝处的构造破损,在结构收缩变形和 法中,防水层一旦破坏,渗水有可能沿变形缝两侧 动荷载作用下,卷材耐久性不足,卷材破损或老化, 梁侧面的结构裂缝或者对拉螺栓孔向两侧渗水, 造成开裂渗水,或造成变形缝处的结构梁向下或侧 影响建筑使用效果。本行车屋面变形缝,在对拉 面渗水,严重影响结构使用。维修困难且费用高。 螺栓孔封堵好的前提下,在变形缝内梁侧面涂刷 鉴于上述现有设计和工艺上的不足,本工程行 防水涂料,并延伸至梁底至...
38 应用能源技术 2012年第6期(总第174期) doi:10.3969jissn.1009-3230.2012.06.010 自然通风湿式冷却塔防冻数值研究 李永华李燕芳魏杰潘昌远 (华北电力大学能源与动力工程学院,保定071003) 摘要:由于我国北方地区冬季气温较低,冷却塔普遍存在结冰问题,必须采取一定的防冻 措施通过FLUENT 软件模拟分析得出进塔水温对塔内不同特征面水温的影响规律并进一步 模拟加装不同层数挡风板后冷却塔内流场的变化。计算结果表明:①当运行工况其它条件不变 时随着进塔水温的升高塔内不同特征面最低水温升高;②加装一定层数挡风板能使填料下面 空气温度场和进风口上沿面空气速度场分布逐渐趋于均匀,有利于防止塔内结冰;③选取进塔 水温分别为17.80℃、21.95℃、26.77℃、30.04℃时,分别加装4、3、2、1层挡风板可有效防止 塔内结冰。 关键词:冷却塔;结冰;挡风板;数值模拟 中图分类6文献标 志码:B文章编号:1009-3230(201206-0038-05 Antifreeze Numerical Study on Natural Draft Wet Cooling Tower LI Yong-hua ,LI Yan-fang ,WEI Jie-ru ,PAN Chang-yuan ( and Power Engineering School of North China Electric Power University .Baoding 071003 ,China ) Abstract :As the lower temperature of China in winter ,cooling towers are easy to be frozen so some arti -freeze measures must be taken .Using the FLUENT software simulation ,this article analysis to obtain the effect of water inlet temperature on water temperature of different characteristic planes ,and further simulates the flow field variation in the cooling tower after installing windshield of different layers .The calculation results indicated that 1)when other condition operating conditions remain unchanged ,with ...
44 应用能源技术 2011年第11期(总第167期) 自然通风湿式冷却塔加装挡风板优化设计 李永华,甄海军,马建坤2 (1.华北电力大学能源动力与机械工程学院,保定0710032.华能上安电厂,石家庄050310) 摘要:以湿冷机组自然通风冷却塔相关理论为基础,借助于CFD模拟软件,建立了火电 机组湿式冷却塔的传热传质模型,主要的换热区域如填料、雨区和喷淋区采用离散相模型。由 于冬季气温较低和塔内的换热不均,在冷却塔的填料下面、进风口处、基环面容易结冰,提出了 在进风口处加装挡风板的方案,数值模拟分析结果显示,该方案改善了塔内温度场,有效的防止 了塔内结冰。 关键词:冷却塔;挡风板;数值模拟;离散相模型 中图分类号:TK264文献标志码:A文章编号:1009-3230(2011)11-0044-05 Optimization Design of Installing Windshield Board On Natural Draft Wet Cooling Tower LI Yong-hua' ,ZHEN Hai-jun' ,MA Jian-kun ( 1.Energy Power and Mechanical Engineering School of North China Electric Power University Baoding 071003 ,China ;2 .Huaneng Shangan Power Plant ,Shijiazhuang 050510 ,China ) Abstract :Based on the relative theorise of the wet cooling tower ,this simulation builds the heat and mass transfer model through CFD .The main heat transfer area ,such as fillers ,rain and spray zone discrete phase model .As the air temperature is low in winter and the heat transfer is uneven in the tower ,the water is easy to freeze below the packing of the cooling tower ,at the air inlet and on the base torus .method is presented that wind shield is installed at the air inlet ,numerical simulation results show which improv...
36 应用能源技术 2013年第12期(总第192期) doi:10.3969/j.isn.1009-3230.2013.012.010 自控闭环控制在化工设备中的应用 皮静轩,刘立新2 (1.大连天晟通用机械有限公司,辽宁大连116025;2.康德玛科技(大连)有限公司,辽宁大连116600) 摘要:合成橡胶业在20世纪初开始生产,从20世纪40年代起得到了迅速的发展。合成 橡胶具有高弹性绝缘性、气密性、耐油、耐高温或低温等性能,因而广泛应用于工农业、国防、交 通及日常生活中。近年来,合成橡胶产业的发展态势让人欣喜。随着生产规模的不断扩大,合 成橡胶产业将在我国产业经济中将占据更加重要的地位。通过几年的发展,国内合成橡胶产业 取得了长足的进步。无论是年产量和消费量,都已经挤入世界前列。合成橡胶设备是化工行业 必不可少的生产装置,由于生产过程连续、产量大,如何减少人力成本,降低单位产量损耗就是 一个重要的课题。 关键词:节能;增效;闭环控制;智能化 中图分类号:TP271.5文献标志码:B文章编号:1009-3230(2013)12-0 Automatic Closed Loop Control Application on Chemical Equipment PI Jing - xuan',LIU Li - xin ( 1.Dalian Tiansheng General Machinery Company Co .Ltd .Dalian 116025 ,China 2 .Countermast Technology ( Dalian)Co.,Ltd .Dalian 116600 ,China ) Abstract :Synthetic rubber menced production in the early 20th century and developed rapidly since 1940 .As synthetic rubber has performance of high elasticity ,insulativity ,gas tightness ,oil resistance and high or low temperature resistance ,it has been widely used in industry ,agriculture national defense ,transportation and daily life ,in recent years ,development trend of synthetic rubber industry is inspired .With continuous development of production scale ,syntheti...