粉煤灰综合利用 2016o.4 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 石膏掺量对矿(钢)渣复合材料物理力学性能试验研究 Experimental Study on Physical and Mechanical Properties of Ore of Steel )Slag Composite Materials with Different Content of Gypsum 李红飞,冯勇,晋强,何金春 (新疆农业大学水利与土木工程学院,乌鲁木齐830052) 摘要:通过用石膏替代部分水泥作为胶凝材料,研究了随石膏替代量的增加对以钢渣、矿渣作为粗、细骨料的复 合材料强度的影响变化。试验结果表明:当石膏替代水泥总量的0~40%,水胶比为0.38时石膏最优替代水泥总量的 20%,7d抗压强度最高为43.3MPa,折压比为0.15.当石青掺量替代水泥总量的50%~80%,水胶比为0.43时石青最优 替代水泥总量为70%,其7d抗压强度为35MPa,折压比为0.3 关键词:石膏;替代抗压强度;抗折强度;软化系数 中围分类号:TU528 文献标识码:A 文章编号:1005-8249(2016)04-0018-03 Li Hongfe ,Feng Yong ,Jin Qiang ,He Jinchun ( Schoolof Water Conservancy and Civil Engineering ,Xinjiang Agricultural University ,830052 ) Abstract :This paper by replacing part of the cement with gypsum materials ,the effect of the amount gypsum on the ore ( orsteel )slag posite materials is studied in this paper .Since the total amount of cement plaster substitute more than 50% of the posite materials which will be more water ,so the experment adpots two kings of water-cement ratio .The one is 0.38 ,when the cement plaster substitute is 0%-40% .The other is 0.43 ,when the cement plaster substitute is 50%-80% .When the water-cement ratio is 0.38 ...
粉煤灰综合利用 2012 NO.5FLYASHCOMPREHENSIVEUTILIZATION 试验与应用
石膏对粉煤灰-石灰石粉-熟料复合胶凝材料强度的影响 Effect of gypsum on the strength of pound cementitious material pounded with clinker and imestone powder and fly sah
侯云芬',黄天勇2 (1.北京建筑工程学院,北京100044;2.中国矿业大学,北京100083) 摘要:研究了石膏品种和掺量对粉煤灰-石灰石粉-熟料复合胶凝材料胶砂强度的影响。
关键词:石膏;石灰石粉;粉煤灰;复合胶凝材料;强度 中图分类号:TQ172.4*26文献标识码:A文章编号:1005-8249(2012)05-0018-04 Abstract;Diferent types and dosages of gypeums are seleeted in pound cementitous material pounded with clinker and limestone powder andfly ash.t is found that the flexural and pressve strength of pound cementitous material adding calcium salfte dihydrate containing 46% SO, at different age is higher than that of pound cementitous material adding plaster stone containing 33% SOy when the mixture dosage and gypsum dosage are the same. The flexural and pressive strength of pound cementitous material including 3. 2% SO, at different age is higher than that of pound cementitous material inluing less SO when the mixture doage and type of gypsum are the same, Sufficient content f SO is key point when pound cementitous material inclding plenty of mixture is prepared.Types and dosages f psum should be selected carefully. Key wordsgypsm;limestone powder;lyash;pound cementitous maeral; strength 已有研究发现,石灰石粉颗粒表面光滑,水分在其性,本文在之前研究的基础上,主要研究石膏品种及掺 表面附着力小,可以起到一定的物理减水作用,此外,量对复合胶凝材料及混凝土强度的影响。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011NO.5 试验与应用 石膏对不同水泥胶凝性能的影响* Effects of Gypsum on the Property of the Different Cement Paste 孙海燕,龚爱民,彭玉林,王莘 (云南农业大学水利水电与建筑学院,云南昆明650201) 摘要:石膏是水泥体系的一个重要组分,而不同的石膏对不同的水泥体系的影响也是相当复杂的.本文果用二水 石膏和煅烧石膏对不同的水泥体系进行较系统的试验,并从机理上分析不同石膏类型及掺量对不同水泥体系的影响,研 究结果表明,不同类型和掺量的石膏对不同水泥体系的增强作用是不同的,同时煅烧石膏比二水石膏更大程度地降低了 水泥体系的流动度,优化后的石膏掺量以6.5%为佳,二水石膏与煅烧石膏以4:6复掺为佳. 关键词:二水石膏;煅烧石膏;水泥体系;强度 中图分类号:TU528.04 文献标识码:A文章编号:1005-8249(2011)05-0019-05 Sun Han-yan Gong Ai-min Peng Yu-lin Wang Xin College of Water Resource and Hydraulic Power Architecture Yunnan Agriculture University Kunming 650201) Abstract:The gypsum is one of the most important ponents in the cement system which affects distinctly the propertics of the cement system.This paper indroduces a systematic laboratory expermedtal study and gives the reasons of the effects of the types and dosages of the different gypsum on the cement system with the dihydrate gypoum and the calcined gypsum from mechanism.The results show that the types and dosages of the different gypsum have the different reinforced effect on the different cement system meanwhile the dihydrate gypsum reduces evidently the fluxility of the cement system than the calcined gypsum.The paper optimizes further the best dosage and the ratio of the dihydrate gypsum and the calcined gypsum which is 6.5%and 4:6 respectively. Key words:dihydrate gypsum;calcined gypsum;cement system;strength 在硅酸盐水泥中,掺入石膏主要是为了控制熟料3A含量、含碱量、细度以及使用温度、混合材的种类 中CA的水化进程从而调节水泥的凝结...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2014NO.5 综述 石膏复合胶凝材料的研究进展 Research Progress in Gypsum-based Composite Cementitious Material 叶蓓红,钱耀丽,江传德2 (1.上海市建筑科学研究院(集团)有限公司,上海200032; 2.同济大学材料科学与工程学院,上海201804) 摘要:以普通建筑石膏为胶凝材料制备的石膏制品强度较低,耐水性较差,致使其应用受到很大限制.本文从掺 合料改性建筑石膏的角度出发,论述了不同石膏复合胶凝材料体系的配制机理及研究进展,并对目前石膏复合胶凝材料 研究存在的问题及发展趋势进行探讨,对石膏复合胶凝材料的进一步研究及发展提供一定的参考. 关键词:石膏复合胶凝材料;水硬性掺合料;强度;耐水性 中图分类号:TQ177.376 文献标识:A文章编号:1005-8249(2014)05-0047-03 Ye Beihong' Qian Yaoli' Jiang Chuande2 1.Shanghai Research Institute of Building Science Shanghai 200032 China 2.Materials Science and Engineering of Tongji University Shanghai 201804) Abstract:Gypsum products are made of ordinary building gypsum as cementitious materials Because of their low strength and poor water resistance their applications are limited.From the perspective of modified building gypsum admixture mechanism and research progress of diffierent kinds of gypsum-based cementing posite have been analyzed and existing problems and development trend of gypsum-based cementing posite have been discussed which will provide some reference for research and development of gypsum-based cementing posite. Key Words:gypsum-based cementing posite hydraulic additive;pressive strength water resistance 石膏作为一种气硬性胶凝材料,被广泛用于生产国内外许多研究者开展了大量的掺合料配制石膏复合 各种石膏制品,这些产品在使用过程中不仅质轻而且胶凝材料的研究,力求从根本上解决石膏制品强度和 具有良好的隔音隔热、防火性能、抗震性能和装饰性等 耐水性较低的问题. 优点,并可以调节空气湿度,提高居住舒适度.但是耐 水性差、强度不高的缺点致使石膏制品在某些场合中 1石膏复合胶凝材料研究进展 的应用受到了较大的限制,这些产品只适用于地上 石膏复合胶凝材料是由石膏和外加掺合料,在相 或干燥环境,不...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2017NO.1
试验与应用
石粉作为掺合料对水泥砂浆干缩性能影响与机理研究 Properties and mechanism of ground limestone as cementitious materials mineral additive
刘小艳,何纪鹏,钟贻辉²,刘磊1 (1.河海大学力学与材料学院,南京210000;2.成都勘测设计研究院,成都610000) 摘要:试验研究了掺人4种不同石粉、不同掺量以及复掺粉煤灰后对水泥砂浆干缩性能的影响,结果表明无论 单掺或者复掺灰岩石粉减小水泥砂浆收缩效果最佳,并且通过SEM法和化学结合水量进行微观机理研究。
关键词:石粉;水泥砂浆;干缩;化学结合水;机理 中图分类号:TV432".1文献标识码:A文章编号:1005-8249(2017)01-0033-06 Liu Xiaoyan', He Jipeng', Zhong Yihui², Liu Lei (1. College of Mechanics and Materials, Ho hai University, Nanjing, 210000 2. Cheng Du Engineering Corporation Limited Chengdu, 63000 Abstract: Stone powder is akind of smle and asy to get, cheap rawmaterial, which willbe proud asabyprdct in the proess f making artificial sand If stone power would b ued, nt oly mprove the pefomace of cementbased materials bt alsobring huge cnm benefts.Experimental researchdryin shinkingperfomance fstone powermdifed cementasedcmpositematrial withdiferent weht ractionsfstone pwderrmxdyahanfordifferent stoe weAdanalethechaismf cntent fstne pwern th propti ofcement mortar materialsResults ndicate that the perfomance f both single andlexliestone powdewasthe best,and throuht microscopic analysis methods by using SEM and chemical bination of wate. Keywords: limestone; Cement mortar, Drying shrinkage; chemical bination of water; Dynamics 水泥混凝土作为目前水利工程建设中用量最大、阻碍混凝土绿色化、低污染发展的进程。
粉煤灰综合利用 2013no.3 FLY ASH COMPREHENSIVE UTILIZATION 试验与应 石灰石尾矿机制砂制备干粉砂浆的性能研究 Study on the Properties of Dry-mixed Mortar Made of Limestone Tailings Mechanism Sand 刘娟红,包文忠2,赵文新2,靳冬民2,张黎2 (1北京科技大学,北京;2新疆天山水泥股份有限公司,乌鲁木齐830013) 摘要:采用含有16%石粉的机制砂为原料制备干粉砂浆。研究羟丙基纤维素、消泡剂、减水剂及粉煤灰对M5.0 M30千粉砂浆性能的影响。结果表明:纤维素掺入砂浆,大大改善了砂浆保水性能但使强度有所降低;在干粉砂浆中加 入0.1%的纤维素,同时加入消泡剂和减水剂,可以提高强度;粉煤灰的加入可以改善胶砂比较小的干粉砂浆的泌水现象。 关键词石灰石尾矿机制砂干粉砂浆;羟丙基纤维素消泡剂 中图分类号:TU177 文献标识码:A 章编号:1005-8249(2013)03-0028-05 Liu Juan-hong .Bao Wen-zhong . ZhaoWen-xin . JinDong-min Zhang Li ( Xinjiangtianshan cement .,LTD wulumuqi 830013 ,china Abstract :The dry-mixed mortar is made of the mechanism sand which contains 16% limestone powder .This article studied the in fluence of hydroxyl propyl cellulose . defoamer.w ater reducer and fly ash on the performance of .0-M30dry-mixed mortar .The results show that mixing fiber into cement mortar greatly improves the cement's water retention capacity but its strength decreased Addition of 0.1% fiber into dry-mixed mortar ,mixingwith the defoamer and water reducer at the same time , canimprove the cement's strength . The addition of fly ash can improve the bleeding of dry-mixed mortar with small cement ...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION 2011 NO.5 试验与应用 石灰石复合超细矿物掺合料对混凝土工作性和 强度影响的研究 Research on Influence of Limestone Composite Superfine Mineral Admixture on Workability and Strength of Concrete 刘娟红',文烨,宋少民² (1.北京科技大学土木与环境工程学院,北京100083;2.北京建筑工程学院土木与交通工程学院,北京100044) 摘要:研究了石灰石复合超细矿物掺合料对混凝土工作性和强度的影响。
关键词:石灰石粉;粉煤灰;混凝土;工作性;强度 中图分类号:TU528文献标识码:A文章编号:1005-8249(2011)05-0027-04 Liu Juan-hong, Wen Ye,Song Shao-min (1. Civil and Enviroment Engeering School, University of Science and Technology Beijing. 100083,China; 2.School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Bejing 100044,China) Abstract In this paper, the inluence of lmestone cmposite supefine mineral adixturen workability an strength fcocrete aremainy o d u d ja up decreases and the limestone powder can decrense the water consumption of concrete and water-binder ratio, meanwhile, it can ensure the workability of conerete. The optimum ratio of low grade fly ash and limestone powder which posite mineral admixture selets is 2:8. When cement content is 288 kg/m²and posite mineral admixture content is 192 kg/m², the 28-day strength of conerete can reach over 55 MPa; While cement content is 240kg/mand poite mineral admixture content is 240 kg/m, the 28-day strength of concree can reach more than 50 MPa. Key words limestone powder; fly ash; concrete; workability; strength 石灰石粉是混凝土骨料加工业的副产品,资源分本文主要研究石灰石复合超细矿物掺合料对混凝土工 布广泛,常用作水泥的混合材和混凝土的掺合料。
关键词:硫铝酸盐水泥;高性能混凝土;高抗硫水泥;短龄期养护;硫酸盐侵蚀 中图分类号:TU528.33文献标识码:A文章编号:1005-8249(2013)04-0021-04 nq ox nH'umux Su,u Sue 1 (1.Water Management Station of Xinjang Uygur Autonomous Region,Urumqi 830000, China; 2. College of Water Conservancy & Civil Engineering,Xinjiang Agricultural University,Urumqi 830052, China; 3.Survey & Design Institute of Water Resources and Hydropower of Xinjiang Uygur Autonomous Region, Urumqi 83000, China) Abstract;The capability ofresisting ulfe orode f sulphouminate cment concrete(SAC)high sulfur resistant cement oncret HSR)and high perfomance fly ash concrete (PFAC) was testedby the sufte erosion experimet for2yeas.It indicatesthat sulpholuminate cement cncreteand high volume(60%)fyash Concrete can resist the erosion of hig oncntration sulfate foralong time,buty ash Con crete with low admixture of 30% and high sulfur resistant cement conerete ( HSR) has limitations, Key wordssulphoaluminate cement; high perfomance concrete; high sulfte resistant cement; shor tem curing; sulfte atack 硫酸盐侵蚀是混凝土耐久性重要内容之一。
168 当代化工研 百家争鸣 201705 电力系统自动化设备应用与电磁兼容分析 ★都成刚黄静 (南京南瑞继保电气有限公司江苏211102) 摘要:文章首先对电磁兼容的相关概念进行简要分析,在此基础上对电磁兼容在电力系统自动化设备中的应用进行论述。期望通过本文 的研究能够对电力系统运行安全性稳定性及可靠性的提升有所帮助。 关键词:电力系统;自动化设备;电磁兼容 中图分类号:T 文献标识码:A Application of Electric System's Automation Equipment and Analysis of Electromagnetic Compatibility Du Chenggang ,Huang Jing Nanrui Jibao Electric Co .,Ltd .of Nanjing Jiangsu 211102 Abstract :In this paper ,it firstly has taken simple analysis of the related concept of electromagnetic patibility ,on which basis ,taken expounding of the application of electromagnetic patibility in the automation equipment of electric system ,so that to provide reference for the safety ,stability and reliability of electric system operation . ey words :electric system ;automation equipment ;electromagnetic patibilit 1电磁兼容的相关概念分析 子电气设备或是自动化系统能够保持正常工作状态的前提 所谓的电磁兼容(EMC)具体是指在电磁环境中,电 下,不对其它事物构成无法承受的电磁骚扰(EMD)的能 下转第169页 上接第167页 (3)必须根据企业自身成长规律来进行企业政工工作。 (2)企业需要完成品牌战略、使其思想政治工作得到创 任何事物都有着自身的发展规律,只有在自身规律得以遵循的 新。第一,企业需要凭惜对自我品牌的推广,让自身形象得 前提下,事物才能得到持续性和综合性发展。企业政工工作作 到曝光,由此获得行业范围内更大的影响力。第二,企业还 为企业文化管理的范畴,对整个企业的文化管理与综合发展都 需要借助品牌在市场中占据一定的份额,如可以凭借品牌文 有着重大作用,所以在进行企业政工工作时必须根据企业自身 化的推广、企业生产产品和广告词的普及等,以实现企业市 成...