粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION 2015 NO.5 试验与应用 Experimental study of Decalcification of High Calcium Fly Ash 肖景波,陈居玲,夏娇彬 (南阳东方应用化工研究所,河南南阳473000) 摘要:对高钙粉煤灰中硫酸钙相转化及钙脱除工艺进行了研究,确定了高钙粉煤灰脱钙最佳工艺条件。
粉煤灰综合利用 2012NO.1 FLY ASH COMPREHENSIVE UTILIZATION 验与应用 高钙粉煤灰的粉磨改性研究 Study on Grinding Improvement of High Calcium Fly Ash 吉文娟1,朱蓓蓉12 (1.同济大学材料科学与工程学院,上海200092; 2.同济大学先进土木工程材料教育部重点实验室,上海200092) 摘要:研究了粉磨对两种高钙粉煤灰物理化学性能的影响.通过混合水泥雷氏夹膨胀值、强度和自由线影胀率等 的试验测定,对两种高钙粉煤灰经粉磨后进行性能研究.结果表明,通过粉磨可以减缓甚至消除高钙粉煤灰带来的安定 性问题,提高混合水泥强度,降低混合水泥自由线膨胀率. 关键词:高钙粉煤灰,粉磨,安定性,强度,膨胀率 中图分类号:TQ170.4文献标识码:A 文章编号:1005-8249(2012)01-0038-03 Abstract:The effects of grinding on the physical and chemical properties with two types of high calcium fly ashes are studied.By teating ways of Le Chatelier's expansion value free expansion ratio strength and so on two types of high calcium fly ashes are studied.The results show that through grinding we could solve the soundness brought by high calcium fly ash improve the strength of pounding cement and decrease free expansion ratio. Keywords:High calcium fly aah cement grind strength expansion ratio 高钙粉煤灰是火力发电厂采用褐煤、次烟煤作为 高钙粉煤灰1)和吴泾电厂的高钙粉煤灰(记作高钙粉 燃料时排放出的一种氧化钙含量较高的粉煤灰,它既 煤灰2),两种高钙粉煤灰的品质指标见表1. 含有一定数量的水硬性晶体矿物又具有潜在活性.与 (2)水泥:海螺牌52.5的硅酸盐水泥 低钙粉煤灰相比,高钙粉煤灰用作水泥混合材或混凝 表1粉煤灰品质指标 土掺合料具有减水效果好、早期强度发展快、改善混凝 项目 比表面积45um烧失需水量28d强度活i-Ca0 /m2/kg筛余/%量/%比/%性指数/% 安定性 土和易性和活性等优点.但高钙粉煤灰由于其游离氧 /% 化钙含量高,可能引起水泥安定性不良和混凝土胀裂, 高钙灰1369 38.83.0795 73.9 3.75不合格 极大地影响了高钙粉煤灰在混凝土中的应用. 高钙灰2450 15.20.8493.7 70.7 6.2不合格 研究表明,来自不同煤矿及不同发电厂燃烧煤 粉所形成的高钙粉煤灰的结构、矿物组成及水化机理 1.2试验方法 有着较大的差异,即使是同一家电厂不同批次出来的 高钙粉煤灰的品质指标按国家标准《用于水泥和 高钙粉煤灰之间也有较大的差异.本文采用上海宝钢 混凝土中的粉煤灰》(GB/T1596-2005)进行测定;高 电厂和吴泾电厂的两种高钙粉煤灰作为原料,采用粉 钙粉煤灰的密度和比表面积按GB/T176-199...
粉煤灰综合利用 2012NO.3 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 高钙粉煤灰在小石峡水电站中的应用研究* The Application Research of High Calcium Fly Ash in the Stone Gorge Hydropower Station 鲁克恩,李双喜2,胡全2 (1.新疆水利水电勘测设计研究院,乌鲁木齐市830000;2.新疆农业大学水利与土木工程学院,乌鲁木齐市830052) 摘要:研究了高钙粉煤灰不同掺量情况下混凝土的体积安定性及高钙粉煤灰的最大掺量情况下,在不同水胶比、 不同擦量情况下混凝土的力学性能及耐久性性能.研究发现:掺高钙粉煤灰混凝土的安定性可通过测定其胶凝材料的 安定性来评定,加25%左右的高钙灰,所配制的混凝土的强度性能和体积稳定性都较好,随着水胶比的降低,楼高钙 粉煤灰混凝土同龄期的抗压强度逐渐增大:橡高钙粉煤灰灰混凝土具有良好的抗渗性能及良好的抗冻性能. 关键词:高钙粉煤灰;混凝土;安定性;抗压强度;耐久性 中图分类号:TU528.2 文献标识码:A 文章编号:1005-8249(2012)03-0006-03 Luke-en' Li shuang-xi Hu Quan? (1.Xinjiang Water Conservancy and Hydropower Survey and Design Institute 830000; 2.College of Water Conservancy and Civil engineering of Xinjiang Agricultural University 830052) Abstract:The volume stability of concrete of different proportion of high calciuen fly ash and the different water ratio and different doeage were Study.The results indicated that the stability of high performance concrete which mixed with high fly ash can be assessed hy determi- ning the stahility of its cememtitious material.The intension eapability and volume atability of concrete maxed with 25%quantity high caleiuam fly ash were preferable.The pression strength was inereased along with redueing of water cement ratio.The cancrete with high calcium fly ash has well impermeability and freexing-thawing resistance. Key words:high cabcium ly ash concrete:stability pression strength durability 高钙粉煤灰是火力发电厂采用褐煤或次烟煤作为况下,不同水胶比混凝土的力学性能及抗冻性能. 燃料时排放的一种氧化钙成分较高的粉煤灰.氧...
粉煤灰综合利用 2012 NO.5FLYASHCOMPREHENSIVEUTILIZATION 试验与应用
高贝利特水泥基低热灌浆材料的研制 Study of the Low-heat Material for GroutingBased on the High-Belite-Cement
杨萍,袁晓宁,樊晓苓,杨进超
(西北核技术研究所,西安710024) 摘要:研究了粉煤灰和偏高岭土2种掺合料对高贝利特水泥基本物理力学性能的影响规律,据此,配制得到工作 性能良好,3d抗压强度大于12MPa,温升低于40℃的高贝利特水泥基低热灌浆材料,以适宜于大体积灌浆,提高灌浆材 料的耐久性。
关键词:大掺量粉煤灰混凝土;正交设计;高流动性;耐久性 中图分类号:TU528.2 文献标识码:A文章编号:1005-8249(2016)01-0027-04 Chen Jian=guo Guo Jin=chuan′2 ,Peng Hua-juan′ ,Liu Lu-qiang2 (1.Hydraulic Research Institute of Guangxi , Nanning,530023; 2. Guangxi Key Laboratory cultivation base construction of Water Engineering Materials, Nanning,530023) Abstract:he inuence ofthe amount of early strength agent,waterbinder ratio an fly ash content on theduabilityf high volume ly ash concrete with highflwabilty is stdieheresults of othogonal experiments show thatThe main factr afeting the imeeabiliy f concete is theaut ofsh, folwedby water mnt rati and themunt f ealy strengthaentheminfctofeting thecabnizatin adft resistance was themout offly ah,and sedly, the amount of earlysengthagent wasbetter thanwater ment ratiohrough thethogonal design, the mix proportion design method o high fluidity and lare amount of fly ash concrete is obtained. Key Wordshigh volume fly ash conerete; orthogonal design; high fowability; durability 大掺量粉煤灰混凝土(Highfy-ashcontent掺量、水胶比及粉煤灰掺量对混凝土耐久性的影响,以 concrete,简称HFCC),利用粉煤灰作为部分胶凝材料期为高流动性大掺量粉煤灰混凝土配合比耐久性设计 (粉煤灰掺量一般不低于总胶凝材料重量的50%),提供参考。
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION 2015 NO.6 试验与应用 高掺量粉煤灰滤料的制备及除磷性能 Preparation for Filter Material with High Content Fly Ash and Phosphorus Removal Performance 杜家芝,薛金凤,马彦涛,潘玲 (1.武汉大学动力与机械学院水质工程系,武汉430072;2.中南电力设计院新能源工程公司,武汉430071) 摘要:采用62.5%粉煤灰、33.75%粘土、3.75%添加剂NS加人一定量的氢氧化钙饱和溶液于950℃C烧制2h得到一 种强度较高的高掺量滤料。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011N0.3 高性能锂渣混凝土的试验研究* Experimental Study on High-performance Lithium slag Concrete 张善德,侍克斌,裴成元2,魏东3,王国强,努尔开力依孜特罗甫 (1.新疆农业大学水利与土木工程学院,乌鲁木齐830052;2.新额尔齐斯河流域开发工程建设管理局,830000; 3.新疆水利水电学校,830013) 摘要:通过理论分析和实验,研究了锂渣掺量对混凝土性能的影响.结果表明,锂渣能提高混凝土的强度,运用锂 渣等量代替一部分水泥(42.5R普通硅酸盐水泥)配制出28d抗压强度为80MPa以上,90d抗压达100MPa以上的高性能 混凝土,抗裂能力明显增强,锂渣单掺配制的混凝土能经受300次冻融循环而不破坏.研究的结论提升了锂流的价值, 为锂渣的应用提供有效途径,有助于制备高性能混凝土. 关键词:锂渣;高性能;抗冻性;抗渗性;混凝土 中图分类号:TU528.0文献标识码:A文章编号:1005-8249(2011)03-003-04 ZHANG Shan-de SHI Ke-bin PEI Cheng-yuan WEI Dong.WANG Guoqiang Nuerkailio Yiziteliopu (1.College of Hydraulie and Civil Engineering of Xinjiang Agriculture University Urumqi 830052 China.2.Irtysh River Basin Development Project Construction Authority of Xinjiang 830000;3.School of water and hydropower of Xinjiang.830013) Abstract:The paper studies the influenee of lithium slag alone on the conerete performanee of by theorial analysis and experimental method. The result shows that replacing a part of cement lithium residue in with concrete can improve the strength of concrete and can make high-perform- ance concrete whose28-day pressive strength is more than80 Mpe and9O-day pressive s trength is more thanl(0Mpa.The capacity of eruck resistanee is obviously enhanced.It is By the study which cant be destroied even through at 300 times freeze-thaw reeyeling.The value of lithium residue is increased providing helpful to the preparation of high-strength and high performance conerete...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION 2015 NO.5 工程实践 高性能抗冲磨混凝土在排沙明渠修复工程中的应用 Application of high performance abrasive resistant concrete in the sediment transporting channel in the beginning of the Jin Gou River's diversion channel 张涛,唐新军,刘向楠,邹军 (新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052) 摘要:利用两种骨料配制的混凝土修复新疆金沟河渠首被冲磨破坏的排沙漏斗下游排沙明渠,并对经过一个夏 季汛期运行结束后的不同衬砌段混凝土进行现场观测。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2014NO.2 试验与应用 高强抗磨混凝土配制技术研究 Research on High Strength and Wear-resistant Concrete Preparation Technology 赵彦江,李双喜,陈蔚,杨永杰、王桑,王洁 (新疆农业大学水利与土木工程学院,乌鲁木齐市830052) 摘要:以不同掺合料品种、不同骨料级配、不同水胶比条件下,测试混凝土的强度及抗磨性能.通过试验研究发 现:混凝土水胶比控制在0.25以下,混凝土中掺加硅粉、膨胀剂,并将骨料最大粒径减小到20mm以下,混凝土具有优异 的抗磨性.可使山区性河道,泄水建筑物混凝土磨损减少,增加建筑物的使用年限. 关键词:混凝土;高强;抗磨性 中图分类号:TU502 文献标识码:A文章编号:1005-8249(2014)02-0025-03 Zhao yan-jiang Li shuang-xi Chen wei Yang yong-jie Wang shen Wang jie College of water conservancy and civil engineering of Xinjiang Agricultural University 830052) Abstract:In this paper under the condition of different varieties of admixture different aggregate gradation and different water/cement rati- o concrete strength and anti-wear performance is tested.Through experimental study it is found that:with water-binder ratio below 0.25 adding silicon powder expansive agent in concrete and the aggregate maximum particle size below 20 mm concrete has excellent abrasion resistance. Therefore it can reduce the wear of mountain aerotaxis river and outlet structure which prolongs service life. Key words:concrete;high strength;wear-resisting 山区间河道坡度大,河水往往挟带大量砂石,在这 泄水建筑物混凝土的抗冲磨问题,决定配制C60~C80 样的河道上修建的泄水建筑物混凝土结构常常受到砂 的高强高性能混凝土材料来解决此问题. 石冲击磨耗、水中滚石的巨烈撞击和高速水流磨损作 用,使得工程破坏严重,严重影响了建筑物的安全运 1原材料 行.泄洪建筑物采用何种抗磨材料,才能保证建筑物 水泥:采用新疆青松水泥有限公司42.5普通水 不被冲坏,增加建筑物的使用年限,是值得研究的 泥,3d抗压强度为25.1MPa 28d抗压强度为48.9MPa 问题. 安定性合格;硅粉:新疆研科公司生产,细度: 通常,混凝土的抗冲磨性好坏首先与混凝土的强 20000m2/kg Si02:90.6% 活性指数:116%;膨胀剂:北 度相关,抗压强度...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2012NO.3 试验与应用 高强度脱硫石膏复合材料制备与力学性能* Study on the Mechanical Properties and I'reparation of High-strength Desulfurized Gypsum Cumposites 曲烈,赵素宁,李剑,刘洪丽,李素 (天津城市建设学院材料科学与工程系,天津300384) 摘要:研究了材料参数和工艺参数对B型半水脱硫石膏水泥复合材料力学性能及结构特征的影响.结果表明, 型半水脱硫石音-水泥复合材料的28d抗折、抗压强度分别是9.38MPu和48.84MPa:掺磨细矿物B型半水脱硫石膏-水 泥复合材料的28d抗折、抗压强度分别为10.88MPa和67.67MP饿;其软化系数分别为0.93和0.81.结构分析表明,掺磨 细矿物B型半水脱硫石膏-水泥复合材料水化产物中,除二水硫酸钙外,还出现C-S-H凝胶和AFt晶体,这些胶体与品体 互相交织,降低孔隙率,提高了密实性和强度. 关键词:脱硫石膏;水泥:磨细矿物;力学性能:结构特征 中图分类号:TQ177.3*75文献标识码:A文章编号:1005-8249(2012)03-0003-04 Qha l.ie Zhao Suning Li Jian Liu Hongli Li Su Departmant of Materials Science and Engineering at Tianjin Institute of Urhan Construction Tianjin 300384 China) Abstract:The effects of material and proccse parameters on the mechanical peoperties and structural characteristics of semi-hyrlrate desul- furized gypsum-cement coraposite was studlied.The testing results showed that of B semi-hydrate desulfurized gypsum-cement coreposite 28-day flexural and pressive strength were 9.38 MPa and 48.84 Mpa respectively:meanwhile mixed with finer grinded minerals.28d flexural and coem- pressive strength of B semi-hydrate desulfurized gypsum-cement posites were 10.88MPa and 67.67 MPa;their softening coefficients are respee- tively (0.93 and 0.81.Struetural analysis indicated that mixed with finer grinded minerals the hydration produets of B semi-hydrate desulfuriaed gypeum-cement posites exeept di-hydrate caleium sulfste appeared CSH ...
关键词:骨料;混凝土干缩;约束作用;过渡区湿扩散作用 中图分类号:TU528.1文献标识码:A文章编号:1005-8249(2014)02-0003-05 AbstractIuene ofaregate ndry shrinkagef coneteby shrinkage tet is investigaed i thispaperThe wight f the csraints effet an tmisue ifsfintfcial rsit eefeaea let n thedrin kes yed as wlas theefts fi aatesizeand an rto dryin shkaherelts h that, h thet frega ume is es tha6%, the constraints pay alading role when theotet oaggregatevolme s betwe6% to8%bth the constrants and the moisture difusn of IZare dominant; and when the aregate volume content ns er8%, the constraints play alading role againCha ges in the maximm aregate size and the perentage of sand have rarely efet n the dryin shrinkage les the unit water cnsumption change. Key words agregate dry shrinkage of conre; onsrsints ffe; mosturedifusion o TZ 干燥收缩是高性能混凝土开裂的主要原因之一,料、降低骨料的含泥量,有利于控制减少混凝土的收缩 而骨料的技术性质对混凝土干燥收缩的影响最为复已毫无争议。
关键词:轻骨料;陶粒;工业废渣;强度;容重 中图分类号:TU528.2文献标识码:A文章编号:1005-8249(2016)05-0025-05 Hua Xia' , Zhang Xiaodong², Yang Qianrong²,Jiang Shengyu* (1.Shanghai Zhonghe Institute of Application Technology of Inspection,Shanghai 200065, China; 2.Shanghai Tongji Institution of Inspection on Construction Quality, Shanghai 200092, China; 3. School of Materials Science and Engineering, Tongji University, Shanghai 201804) oaeo po sdd uooeeaeo posa o sp CAC)wee sudiedheresultshwed habyusefgae 0miaregate fortheprearaionfindusalwaseresidic agregalecoee CC,with theeae in the mout faegatebk desity edution wasnotlebt the srenth wasreed significantly It was not esirable to reuebulk ensity by inreaing the aggreate out of lighweight conete withhigh ade aggregaty of grade 400 cermic aregate, with the inrease f the aggregate amout, bulk ensity had a significant redction, bt the strength chnged lite. a s spx ss ps efetofargateconsmption and sandeagregalertionthe softening ceficicnt fICAC wasno bviousbt the iece f us q o ao jo q a us pue seo us pae coefficient was. Key Wordslightweiht aggregatecermic agregate concreteindstrial wasteresidue; strength; ulk density 陶粒混凝土具有轻质、造价低、高抗震性、高抗裂时可大幅度减轻结构物的自重,这一特性使轻骨料混 性、高耐久性、高耐火性、保温隔热等特点。