The ion exchange ability and adsorption ability of zeolite from coal fly ash ( CFA) are analysis according to its spatial structure. 首先根据人工合成沸石的空间结构,分析了粉煤灰沸石离子交换性和吸附分离性特性;
Study of Application of Fly Ash Concrete in Super-Long Mass Structure 掺粉煤灰混凝土在大体积超长结构中的应用
The fly ash with a loose and porous structure has definite absorbent ability, which has a good effect on soil improvement. 粉煤灰疏松多孔,具有一定的吸水能力,对土壤有很好的改良作用;
The particle in the fly ash of low calcium is the silicon oxygen tetrahedron structure, one's own activation is very low. 低钙粉煤灰中的微粒为硅氧四面体结构,自身的活性很低。
The application of high blending fly ash concrete in sewage pool has proved that adding fly ash into concrete can meliorate distinctly the structure of the transition zone of interface, thus the strength of concrete is improved. 通过大掺量粉煤灰混凝土在污水池工程中的应用证明:粉煤灰的掺入可以改善混凝土的界面结构,提高混凝土的强度;
It is focused on impacts of ash temperature upon the structure selection, structural material and the insulation/ wearing properties of the material. 重点介绍了灰渣温度对结构选型、结构材料和保温耐磨材料性能的影响。
It is difficult to demolish an ash warehouse due to its complex structure and integral firm structure. 拟拆除的灰库结构复杂,整体结构牢固,爆破难度大。
SEM diagram shows that when the mixed fly ash reaches 140 kg/ m3, the structure of high frost resistant concrete with polypropylene fiber is densified, and the fiber is tightly combined with boundary concrete. SEM形貌图表明,粉煤灰掺量达到140kg/m3时,聚丙烯纤维高抗冻混凝土的结构密实,纤维与混凝土界面结合紧密;
Points out that the coal seam thickness, coal seam texture and coal mass structure are not only changed but also the degree of coalification is increased and the coal ash is added by bedding slip structure. 指出了层滑构造不仅使煤层厚度、煤层结构和煤体结构发生变化,而且使煤层的煤化程度提高、灰分增加。
The major factors influencing the carbon content of fly ash are: coal index, coal structure and coke reaction activity, fed-coal particle diameter and structure of the circulating fluidized bed as well as other operational parameters etc. 影响飞灰含碳量的主要因素包括:煤指标、煤的结构和焦炭反应活性、给煤粒径以及循环流化床的结构和其它运行参数等。
This paper gives a basic idea to remove the unburned carbon from fly ash and improve the activity of ash by using fluidized technology after the tiny structure of fly ash has been analyzed. 在分析粉煤灰显微结构的基础上,提出了采用流态化方法脱除粉煤灰中残余炭并提高粉煤灰活性的基本思路。
Contrastive experiment and research on fly ash to improve concrete submicroscopic structure in cement and concrete 粉煤灰在水泥和混凝土中应用对改善混凝土细观结构的对比试验研究
For meeting the market requirement, in Fenxi Mines Group, the feed for cleaning be blended from coals of different seam containing different ash and sulfur that the coal product structure be adjusted, utilization of coal resources be reasonable, and economic benefit be increased. 汾西矿业集团公司为适应市场需求,合理利用资源,需对各矿各煤层不同灰分、不同硫分的煤进行配比入洗,以调整产品结构,合理利用现有资源,提高煤矿的经济效益;
The genesis and reinforcement method for the cracks in fly ash brick masonry structure 某粉煤灰砖混结构裂缝成因及加固方法
Properties of Mechanical Ground Fly Ash and NMR Analysis of Ground Fly Ash Structure 机械研磨粉煤灰物理性能与结构的NMR分析
Pore volume fractal dimension of fly ash-cement paste and its relationship between the pore structure and strength 粉煤灰-水泥浆体的孔体积分形维数及其与孔结构和强度的关系
Multifunction& high-accuracy gypsum block is one of new types of wall materials made of hemihydrate gypsum and fly ash, and it has unique structure and outstanding performance. 以半水石膏、粉煤灰为主要原材料的高精度、多功能石膏砌块是一种构造独特、性能优良的新型墙体材料。
Influence of the fly ash on concrete structure durability 粉煤灰与混凝土结构的耐久性
The results indicated that the addition of ground fly ash to the MDF composites improved the pore structure and water sensitivity of the MDF composite but obviously decreased the mechanical properties. 试验结果表明,粉煤灰细粉的掺入虽然改善了MDF水泥材料的孔结构和水敏性,但却明显降低其力学性能。
The effect of low calcium fly ash on expansive property and pore structure characteristics of the MgO slight expansive cement paste were investigated. 研究低钙粉煤灰对氧化镁微膨胀水泥的膨胀性能与水泥石孔结构的影响。
The basic characteristic of raw materials red mud, gangue and coal ash is analyzed. Ceramsite with uniform structure and well performance has been made after mixing, grinding, balling and roasting under some temperature. 分析了赤泥、煤矸石、粉煤灰等原料的基本特性,经配比、粉磨、成球,在一定温度下焙烧,制备出了结构均匀、性能良好的陶粒。
After fly ash or slay was added, the structure of interface is improved. 加入磨细矿渣后,界面结构同样也得到改善。
In addition, muscovite, aluminum silicate fiber and zirconia aluminum silicate fiber were added into lower fusion point coal ash to study the effect of morphology and structure of the minerals on coal ash fusibility. 另外,向低熔点的煤灰中加入白云母、硅酸铝纤维和含锆硅酸铝纤维,研究它们对煤灰的阻熔作用,以及矿物形貌和结构对煤灰熔融性的影响。
In the highway construction in China, semi-rigid base and subbase with cement stabilized material or lime and fly ash stabilized material is the main form of pavement structure of highway. At present, the crack problem increasingly has become the main defect of this structure. 在我国公路建设中,以水泥稳定材料或石灰粉煤灰稳定材料为主的半刚性基层和底基层是目前路面结构的主要形式,但裂缝问题日益突出已成为该结构主要缺陷。
The concrete structure with fly ash was loose than the concrete structure without fly ash in the 3d age, it had bigger porosity and smaller hydration products. 3d龄期时掺粉煤灰的试样混凝土结构比未掺粉煤灰的试样疏松,孔隙率也较大,水化产物相对较少。
Finally with microscopic image the paper analyses fly ash and polypropylene short fiber on cement hydration and internal structure of concrete. 最后结合微观图像分析粉煤灰和纤维对水泥水化以及混凝土内部结构发展的影响。
The average compressive strength computing formula of autoclaved fly ash perforated brick masonry structure in current regulation is feasible and conservative enough. 规范的抗压强度平均值计算公式对蒸压粉煤灰砖砌体是可行的,并偏于安全。
Fly ash has pozzolanic effect, can use the fly ash replacement part of the cement, thus saving cement contents; In addition, with the fly ash aggregate filling effect, improve the stone cement pore structure, improve dry mortar density and intensity of. 粉煤灰具有火山灰效应,可以用粉煤灰替代部分水泥,从而节约水泥用量;另外,粉煤灰具有微集料填充效应,改善水泥石的孔结构,提高干粉砂浆的密实度和强度。
Fly ash, the industrial waste, has porous structure and special component. These properties have attracted extensive attention of the domestic and foreign scholars for its application in the dyeing wastewater treatment. 工业固体废弃物粉煤灰因其多孔特性和特殊组分而应用于染料废水处理成为近年来国内外学者关注的热点。