粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2010NO.1 流化床燃煤固硫灰渣膨胀控制因素研究* Study on Controlling Factors of Expansion of FBC Ashes 宋远明,徐惠忠,王美娥 (烟台大学环境与材料工程学院,烟台264005) 摘要:分别用线性膨胀率和XRD研究固硫灰清净浆试件的膨胀特性和固硫灰渣水化产物随龄期变化趋势,并在 结合二者试验结果的基础上对膨胀控制因素进行探讨.结果显示:固硫灰渣净浆试件的线性膨胀率在14~28d前增加 迅速,而后趋于平缓.试验表明,固硫灰清的膨胀特性可分为两个阶段:14~28d前主要受钙矾石量所控制,而随后龄期 则主要受二水石膏量所控制. 关键词:流化床;固硫灰清:线性膨胀率;控制因素 中图分类号:TU528.041;X773 文献标识码:A文章编号:1005-8249(2010)01-0003-03 (College of Environmental and Material Engineering Yantai University Yantai 264005 China) Abstract:Linear expansion ratio and X-ray diffraction(XRD)were used to study the expansion property and the change trend hy the age of hydration products of Fluidized Bed Combustion FBC)ashes paste respectively followed by the investigation of the controlling factors of expan- sion.The results show that the linear expansion mtio of FBC ashes paste increnses rapidly before 14-28 days and it tums steady later.This work confirms that the expansion property of FBC aahes can be divided into two phases:The linear expansion ratio of FBC ashes paste is controlled by the content of ettringite before 14 -28 days but by the content of gypsum subsequently. Key words:fluidized bed bustion:FBC ashes;linear expansion ratio:controlling factor 流化床燃煤固硫灰渣(以下简称固硫灰渣)是指解决以上问题,可帮助找到控制固硫灰渣膨胀的方法, 含硫煤与周硫剂(一般为石灰石)以一定比例混合后这将极大地推进其利用进程.由于固硫灰渣出现时间 在流化床锅炉内经850~900℃燃烧固硫后排出的固相对较晚,目前未见国内外对此问题的研究报道.为 体废弃物,其中从烟道收集到的灰状物为固硫灰,炉底此,本文在研究固硫灰渣净浆线性膨胀率的基础上,用 排出的块状物为固硫渣. X射线衍射(X-ray diffraction XRD)对固硫灰渣的膨 固硫灰渣除含有大量烧粘土...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018N0.4 应用技术 注浆法在某既有桩基工程加固中的应用 Application of Grouting Method in Reinforcement of Existing Pile Foundation Engineering 贾文亮1,张志义2,周立欣3,陈名扬4 (1.河北建研科技有限公司,石家庄050021; 2.邯郸钢铁集团有限责任公司技术改造部,邯郸056003; 3.中国核电工程有限公司河北分公司,石家庄050021; 4.河北建研工程技术有限公司,石家庄050021) 摘要:参照柱端后注浆技术的工艺技术特点,即采用注浆泵通过预埋在桩端中的注浆管向桩端注入水泥浆液以达 到提高承载力,降低沉降的目的.通过分析一工程案例,将该技术引入既有桩基加固工程中,对比柱基加固前后试验数 据显示,桩端注浆加固后柱基竖向抗压承载力提升显著,达到了加固目的. 关键词:桩端后注浆;承载力;沉降;静载荷试验 中图分类号:TU472.6 文献标识码:A 文章编号:1005-8249(2018)04-0081-03 Jia Wenliang';Zhang Zhiyi?;Zhou Lixin';Chen Mingyang (1.Hebei Building Research Technology Co. Lad Shijiazhuang 050021; 2.HBIS GROUP HANSTEEL COMPANY Technical Modifications Department Handan 056003; 3.China Nuclear Power Engineering Co. Ltd.Hebei Branch.Shijiazhuang 050021; 4.Heibei Institute of Building Engineering Technology Co. Ltd. Shijiazhuang 050021) Abstract:In this paper with reference to the pile-end post-grouting technology characteristics namely using the grouting pump through embedded grouting pipe in the pile end to inject cement slurry to improve the bearing capacity achieve the goal of reducing subsidence.By analyzing an engineering case the technology is applied to existing pile foundation reinforcement engineering.Through paring the test data before and after the reinforcement of pile foundation the vertical pressive bearing capacity of pile foundation is improved obviously and the reinforcement purpose is achieved. Keywords:pile-end post-grouting:bearing c...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013N0.3 专题研究 水泥基材料干燥收缩快速测定方法研究 Study on a Rapid Test Method for Drying Shrinkage of Cement Matrix 朱蓓蓉1.2,曹秋凤1,马一平1.2 (1.同济大学材料科学与工程学院,上海201804; 2.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:提出了一种水泥胶砂干燥收缩快速测定方法,并与现行标准JC/T603一2004建立起关系.结果表明:高温 低湿条件下水泥胶砂干燥收缩达到稳定所需的时间可大大缩短,由常温条件下:(22士2)℃,50%~55%RH 4个月左右 缩短到了60℃烘箱条件下3周左右,80℃烘箱条件下2周左右;高温低湿条件下水泥胶砂干燥收缩明显降低,通过高温 低湿快速测定方法,利用温湿度修正系数(60℃烘箱条件下约为1.60 80℃烘箱条件下约为2.15)可预测常温条件下水 泥胶砂最终干燥收缩值. 关键词:水泥胶砂;干燥收缩;快速测定方法 中图分类号:TU502.3 文献标识码:A 文章编号:1005-8249(2013)03-0003-04 Zhu Bei-rong2 Cao Qiu-feng Ma Yi-ping' (1.School of Materials Science and Engineering Tongji University Shanghai 201804.China; 2.Key Laboratory of Advanced Civil Engineering Materials of ministry of Education Tongji University Shanghai 201804 China) Abstract:A rapid test method for drying shrinkage of cement mortar was put forw ard and pared with JC/T 603-2004 standard test method.Results show that the time for the value of drying shrinkage of cement mortar achieving stability in environment of high tem- perature and low humidity shortens greatly from about four months at±2℃in5o%~55/RH environment to about three weeks at6o℃ in<l0%RH environment and even about two weeks at8o℃in<lo%RH environment.The value of drying shrinkage of cement mortar also decreases greatly in environment of high temperature and low humidity The ultimate value of drying shrinkage of cement mortar at 22±2℃in50%~55%RH environment can be forecast with the rapid test method ...
关键词:粉煤灰;煤研石;多孔陶粒;气孔率;抗压强度 中图分类号:TQ174文献标识码:A文章编号:1005-8249(2017)06-0011-05 Yang Yanru,Wang Jie,Ma Yonglin,Wang Jun ( Inner Mongolia University of Science and Technology, Baotou City,014000) AbstratThe porous ceramsite was preparedbyading pore forming agent withlyashbeing mainrawmaterial.Ioret control and optimize the process and obtain the porous ceramsite with excellent performance,the orthogonal experiment was made toresearch thefectsf gangue content,poreforming agent content and sintring temperature on the physicalnd chemical proeisrsitwngtielth the pore-forming agent content is the most important factor on the characteristic of porous ceramsite.When the amount of coal yauns uqsu aae aq 09lI 1e paus sdues sus snood a *%I ua3e uu aod a pue 0 s anue and the apparent porosity reaches58.22%The crystal phase position of the sample is anothite,and its internal pores is thre dimensional cectivityvenlydistbutednthe samlehichis abthhihporsity andstronechaica trengthfhi quality porous ceramic. Keywrdyahcal an pssit prsty cpreveh 多孔陶瓷是一种经高温烧成、内部具有大量彼材料(-],多孔陶瓷的应用范围仍在不断地进一步发 此相通的孔隙结构的陶瓷材料。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011NO.5 试“验与应用 正交法研究钢渣中提取Ca2的可行性 Study the Feasibility of Extracting the Calcium from Steel Slag with Orthogonal Method 黄辉 (同济大学材料工程研究所,上海200092) 摘要:用甲酸对钢清进行处理以提取钢渣中的钙,溶出的钙和剩余的高铁钢渣可以分别加以利用.试验采用正交 法进行.试验结果表明,甲酸浓度对钙离子溶出率的影响最大,酸、渣比例的影响次之,反应时间的影响最小;而对于铁 离子的溶出率来说,酸、渣比例的影响最大,酸浓度的影响次之,反应时间的影响最小.当酸、渣比例为1:2,反应时间 1d 酸浓度为15%时,钢渣中钙离子溶出量相对较多,铁离子的溶出量较少,即效果最好.此时,钙离子溶出率为43. 33% 铁离子的溶出率为0. 关键词:钢渣;正交;钙;铁;甲酸 中图分类号:X757文献标识码:A 文章编号:1005-8249(2011)05-0031-04 Huang Hui (The Materials Ergineering Institute of Tongji Uniersity Shanghai 200092) Abstract:We use Formic acid to process steel slag in order to extract the calcium.Dissolution of calcium and the residual high iron containing steel slag can be used separately.The main constituents of steel slag are calcium oxide iron oxide magnesium oxide ailicon oxide ete Above all calcium oxide is easily reacted with Formic acid.Because the main factors of the reaction are time acid concentration and the ratio of acid with steel slag this experimental study use the orthogonal method.The results showed that Formic acid concentration has the greatest impact on the dissolution rate of calcium the following factor is ratio of acid with steel slag and the last is the reaction time Finally We use the prehesive balance.method to discuss the two dissolution rate of ealcium and iron.We obtain the result that when the ratio of acid with steel slag is 1:2 the reaction time is 1 days the acid concentration reaches 15% th...
粉煤灰综合利用 2017N0.1 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 正交实验法在炉渣保温砂浆中的应用研究 Applied Research of Orthogonal Experimental Method in Slag Insulation Mortar 舒阳1,顾炳伟2,詹长林3,陈守松4,张义桥5 (1.连云港市城乡建设局总工办,江苏连云港222006;2.淮海工学院土木工程学院,江苏连云港222005; 3.连云港市散装水泥办公室,江苏连云港222001;4.连云港市建设工程质量监督站,江苏连云港222006; 5.连云港开发区建设工程质量监督站,江苏连云港222069) 摘要:采用正交实验法研究炉渣粉作为细骨料的保温砂浆性能,结果表明:炉渣粉应用于保温砂浆,不仅具有 良好的物理力学、热工和耐久性等宏观性能,还能起到节能环保的作用. 关键词:保温砂浆;炉渣粉;正交实验法;应用研究 中图分类号:TV432*.9 文献标识码:A文章编号:1005-8249(2017)01-0026-03 Shu Yang' Gu Bingwei Zhan Changlin' Chen Shousong Zhang Yiqiao (1.Chief Engineer Office Lianyungang Urban and Rural Construction Bureau Lianyungang.Jiangsu 222006 China; 2.School of Civil Engineering Huaihai Institute of Technology Lianyungang 222005 China;3.Lianyungang Bulk Cement Office Lianyungang Jiangsu 222001 China;4.Lianyungang Construction Quality Supervision Center Lianyungang Jiangsu 222006 China; 5.Lianyungang Development Zone Construction Quality Safety Supervision Center Lianyungang Jiangsu 222069 China) Abstract:This article studied the insulation mortar performance of slag powder serving as fine aggregate by using orthogonal experimental method.The results showed that the slag powder which was applied to insulation mortar not only had a good macroscopie performance associated with physical mechanics and durability but also functioned as energy conservation and environmental protection. Keywords:Insulation mortar;slag powder orthogonal experimental method:applied researeh 20世纪90年代我国提出干混砂浆[1的概念...