Microtopography of high-calcium fly ash particle surfaces

被引:14
|
作者
Bosbach, D [1 ]
Enders, M [1 ]
机构
[1] Univ Munster, Inst Mineral, D-48149 Munster, Germany
关键词
D O I
10.1680/adcr.1998.10.1.17
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Tapping mode atomic force microscopy (TM-AFM) has been used to image the surfaces of glassy spheres from high-calcium fly ash (HCFA). TM-AFM provides high-resolution images of such spheres under ambient conditions (e.g no vacuum and no conductive coating), showing topographic details which were not accessible with conventional electron microscopy. Combined single-particle X ray diffraction and TM-AFM allows identification of nanometre-sized anorthite, gehlenite, anhydrite and magnetite crystals attached to the glassy spheres. Furthermore, the TM-AFM technique revealed that the glassy matrix is quite inhomogeneous even on the lower nanometre scale. The spatial distribution of reactive and inert mineral phases attached to fly ash particle surfaces provides information about their high-temperature formation, which may be relevant to their subsequent reactivity during hydration.
引用
收藏
页码:17 / 23
页数:7
相关论文
共 50 条
  • [1] High-calcium fly ash for tertiary phosphorous removal
    Vinyard, D.L.
    Bates, M.H.
    1979, 126 (06): : 62 - 64
  • [2] NEUTRALIZATION AND DISSOLUTION OF HIGH-CALCIUM FLY-ASH
    HODGSON, L
    DYER, D
    BROWN, DA
    JOURNAL OF ENVIRONMENTAL QUALITY, 1982, 11 (01) : 93 - 98
  • [3] Pervious high-calcium fly ash geopolymer concrete
    Tho-in, Tawatchai
    Sata, Vanchai
    Chindaprasirt, Prinya
    Jaturapitakkul, Chai
    CONSTRUCTION AND BUILDING MATERIALS, 2012, 30 : 366 - 371
  • [4] Compensating for Concrete Shrinkage with High-Calcium Fly Ash
    Barabanshchikov, Yurii
    Krotova, Vasilia
    Usanova, Kseniia
    BUILDINGS, 2024, 14 (10)
  • [5] Mechanochemical synthesis of calcium orthosilicate from high-calcium fly ash
    Voloskova, E. V.
    Poluboyarov, V. A.
    Berdnikova, L. K.
    Gusev, K. P.
    SOLID FUEL CHEMISTRY, 2015, 49 (03) : 183 - 187
  • [6] Mechanochemical synthesis of calcium orthosilicate from high-calcium fly ash
    E. V. Voloskova
    V. A. Poluboyarov
    L. K. Berdnikova
    K. P. Gusev
    Solid Fuel Chemistry, 2015, 49 : 183 - 187
  • [7] Properties of pervious concrete containing high-calcium fly ash
    Sata, V.
    Ngohpok, C.
    Chindaprasirt, P.
    COMPUTERS AND CONCRETE, 2016, 17 (03): : 337 - 351
  • [8] Characterization of Ferrospheres Recovered from High-Calcium Fly Ash
    Sharonova, Olga M.
    Anshits, Natalia N.
    Fedorchak, Marina A.
    Zhizhaev, Anatoly M.
    Anshits, Alexander G.
    ENERGY & FUELS, 2015, 29 (08) : 5404 - 5414
  • [9] Crystal Growth on Cenospheres from High-Calcium Fly Ash
    Yoriya, Sorachon
    Tepsri, Phattarathicha
    CRYSTALS, 2021, 11 (08)
  • [10] HIGH-CALCIUM FLY-ASH FOR TERTIARY PHOSPHORUS REMOVAL
    VINYARD, DL
    BATES, MH
    WATER & SEWAGE WORKS, 1979, 126 (06) : 62 - &