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。
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018N0.1 综述 风积沙的特性及应用 Properties and Application of Aeolian Sand 蒋晓星1 2,孙振平1 2,杨正宏1 2,高春勇3 (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; 3.中国建筑材料科学研究总院,北京100024) 摘要:我国西部地区有大面积风积沙质的沙漠,若能因地制宜、就地取材,将风积沙应用到实际工程中,将产 生巨大的社会、环境及经济效益.本文从风积沙特性(物理化学特性、力学特性)及其工程应用(风积沙制备混凝土、 风积沙制备砂浆,以及风积沙作为路基填料)3个方面对风积沙进行了详尽的介绍,希望能给读者一些启发和思考. 关键词:风积沙;沙漠化防治;风积沙混凝土;风积沙砂浆;压实特性 中图分类号:P619.228文献标识码:A 文章编号:1005-8249(2018)01-0065-05 Jiang Xiaoxing!.2 Sun Zhenping!.Yang Zhenghong!.Gao Chunyong (1.School of Materials Science and Engineering Tongji University Shanghai 201804; 2.Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education Tongji University Shanghai 201804; 3.China Building Materials Academy Beijing 100024) Abstract:There are large areas of deserts with aeolian sand.It will bring great benefit to our society environment and economy if we apply aeolian sand to local conditions.This paper gave a detailed introduction of the properties (physicochemical property mechanical property)and engineering application (aeolian sand concrete aeolian sand mortar and roadbed filling).The authors hope to give readers some inspiration and reflection about using aeolian sand in civil Engineering. Keywords:aeolian sand;control of desertification;aeolian sand concrete;aeolian sand mortar;paction characteristic 国沙漠化土地主要分布在新疆、内蒙古、青海、甘肃、 1前言 陕西、宁夏、吉林、黑龙江和辽宁等省区2.而这 沙漠化是当前全人类面临的最严峻的问题之一, 些省区的突出特点是地域广阔,人口稀少,经济欠发 而中国也正深受沙漠化的危害.中国沙漠化总面积 达.由于沙漠、戈壁以及大风的...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2012NO.4 专题研究 钢纤维增强砂浆的力学性能研究 The Mechanic Research of Steel-fiber Reinforced Mortar 谈海涛,董帅2,陈怡,宋晓明 (1.同济大学智能与结构研究所,上海201804;2.上海贝卡尔特-二钢有限公司,上海200131) 摘要:介绍了钢纤维砂浆在钢纤维掺量分别为0、0.5%、1.0%、1.5%和2.0%的抗压抗折强度.作者模拟梁结构 受力时的特点,将钢纤维梯度接入在砂浆试块的下半部分受拉区,并与同样掺量的钢纤维整体掺人作比较,得出梯度 人的砂浆抗压强度都相对整体掺人要低,但是抗折强度较高,从而得到梯度掺人有更好的韧性. 关键词:钢纤维增强砂浆;抗压强度;抗折强度;梯度 中图分类号:TQ177.6*8 文献标识码:A 文章编号:1005-8249(2012)04-0019-03 Tan Hai-tao' Dong Shuai? Chen Yi' Song Xiao-ming' (1.Institute of smart and construction materials Tongji University Shanghai 201804 2.Shanghai Bekaert-NO.2 Co.Ltd Shanghai 200131) Abstract:The pressive strength and flexural strength of the steel-fiber reinforced mortar with the volume fraction being00.5%6、.0% and 2.0%is introduced respectively.According to the simulation on the loading characteristics of beam the steel-fiber is distributed in the flexural area of the half part below.Compared to the distribution in the whole area it shows that the pressive strength is lower but the flexural strength is higher thus gradient distributing obtains a better toughness. Key words:steel-fiber reinforeed mortar;pressive strength;flexural strength;gradient 砂浆是准脆性材料,在承受荷载时会发生脆性断贝卡尔特二钢有限公司生产的钢纤维.钢纤维具体 裂,抗弯能力较差.在砂浆基体中掺人一定量的钢纤 参数表1、图1、图2. 维能够改变砂浆的断裂行为,钢纤维的作用是桥接基 表1试验用钢纤维参数 体裂缝而改变其开裂行为,纤维水泥基材料具有较高 型号 长度直径 抗拉强度杨氏模量根数 长径比 的强度和良好的韧性12.许多工程结构在承受荷载 /mm /mm /MPa /GPa /kg 0L13/.20 时一般是上部为受压区,下部为受拉区.将等量的钢 130.2065 ≥2600 210 31400 RC-65/35-BN350.5565 1345 210 14500 纤维均匀分布在受拉区,使其能更大的承受荷载带来 的拉应力,从而能更充分的利用钢纤维,在一定程度上 可以节约材料. 1试验原材料及砂浆配合比 1.1试验原材料 试验采用水泥为"海螺”牌P.042.5水泥,砂的细 度模数为2.5,水为一般自来水.所用钢纤维是上海 通讯作者:谈海涛(1986-),硕士研究生,主要从事智能与结构建 筑材料的研究, 图10L13/.20钢纤维 E-mail:tanhaitao6@126. 收稿日期:2011-12-12 19 万方数据 粉煤灰综合利用 2012 N0.4 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 10 60 50.05 5811 5897 50 5262 47.78 48.72 712.11 422943.34 铜纤维整抗压强度 0 钢纤维梯抗压强度 10 0.0 0.5101.52.025 0L13/.20钢纤维掺量/% 图2RC-65/35-BN钢纤维 图30L13/.20钢纤维掺量与抗压强度关系 1.2试验配合比 本试验是根据湖南大学自主研究的钢纤维增强砂 30 2768 浆强度及相应配合比进行3,砂浆试...
粉煤灰综合利用 2017N0.6 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 钢纤维及硅灰对UHPC性能影响试验研究 Experimental Study on the Influence of Steel Fiber and Silica Fume on the Properties of UHPC 徐俊,许永和,王圣怡 (上海建工集团股份有限公司,上海200080) 摘要:以超高性能混凝土(UHPC)为研究对象,探索钢纤维形状及硅灰掺量对其性能的影响规律.试验结果表明, 直线形钢纤维UHPC比端钩形钢纤维UHPC流动性能更优异,同时随着硅灰掺量的增加,UHPC流动性能逐渐变好而 后再变差,1d及28d抗折强度均呈现先增加后减小的趋势,1d及28d抗压强度均慢慢增加,但当硅灰掺量超过-一定 额度值时,对抗压强度的影响很小. 关键词:混凝土;超高性能;钢纤维;硅灰;性能研究 中图分类号:TU528.31 文献标识码:A文章编号:1005-8249(2017)06-0008-03 Xu Jun Xu Yonghe Wang Shengyi (Shanghai Construction Group Co. Lad..Shanghai 200080 China) Abstract:Taking Ultra-high performance concrete (UHPC)as the research object the influence of the shape of steel fiber and the proportion of silica fume on its performance was investigated in this paper.The test results show that the flowing property is more outstanding by using linear steel fiber than hooked steel fiber in UHPC.With the increasing proportion of silica fume the flowing property of UHPC gets better first and then worse Id and 28d rupture strength increases first and then decreases ld and 28d pression strength both increases slowly However when the proportion of silica fume exceeds a certain limit its influence on the pressive strength is quite small. Keywords:concrete;ultra-high performance;steel fiber;silica fume:performance study 现代建筑工程对混凝土质量要求越来越高,传 久性,抗压强度一般不低于150MPa 抗折强度可以 统混凝土普遍强度较低且耐久性不佳,难以适应当 到达40MPa2-3 日本、美国、澳大利亚等发达国家 前某些复杂或特殊工程的需要,因此混凝土的高性 已成功将超高性能混凝土应用于预制、现浇结构及 能化便成为现代混凝土技术发展的重要方向,通过 防渗漏装置之中,很好的解决了工...
粉煤灰综合利用 2014 NO.2 FLYASHCOMPREHENSIVEUTILIZATION 综述 钢渣的利用及其应用研究进展 Study on Comprehesive Utlization of SteeSlag andits Development Trend 张劲,陆文雄',王雪,张炎²,马娇丽²,张青3 (1.上海大学,上海200444;2.上海宇培特种建材有限公司,上海201804; 3.上海市普陀区建筑工程管理办公室,上海200333) 摘要:介绍了钢渣的形成和性质及目前常见的钢渣处理工艺及其优缺点;并系统地阐述了目前国内外 钢渣的综合利用情况及对钢渣未来发展前景的展望。
粉煤灰综合利用 2016 NO.1 FLYASHCOMPREHENSIVEUTILIZATION 试验与应用 钢渣浸水陈化处理时间分析研究* Research on the Time of the Steel Slag Soaking in Water in the Process of Aging Treatment 邹浩娜,冯勇 (新疆农业大学水利与土木工程学院,乌鲁木齐830052) 摘要:将钢渣按粒径不同分为7组,利用蒸馏水对钢渣进行浸泡,浸水温度控制在常温(25℃±2℃)下。