Aqueous leachability of metakaolin-based geopolymers with molar ratios of Si/Al=1.5-4

被引：75
作者：
Aly, Z. [1 ]
Vance, E. R. [1 ]
Perera, D. S. [1 ]
Hanna, J. V. [1 ]
Griffith, C. S. [1 ]
Davis, J. [1 ]
Durce, D. [1 ]
机构：
[1] Australian Nucl Sci & Technol Org, Inst Mat Engn, Menai, NSW 2234, Australia
来源：
JOURNAL OF NUCLEAR MATERIALS | 2008年 / 378卷 / 02期
关键词：
D O I：
10.1016/j.jnucmat.2008.06.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The leachability in water of metakaolin based geopolymers with molar ratios of Na/Al = 1 and Si/Al = 1.5-4.0 has been investigated in order to optimise the composition for the immobilisation of nuclear waste. Formulations with Si/Al of around 2 are the most suitable using the ASTM/PCT leach test method. The variability of the leach results is discussed with reference to the microstructure, compressive strength and the degree of polymerisation of the geopolymers as observed here by solid state nuclear magnetic resonance, XRD and infrared measurements. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
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页码：172 / 179
页数：8
相关论文
共 26 条
  • [1] *AM NUCL SOC, ANSIANS1612003
  • [2] [Anonymous], 2002, C128502 ASTM
  • [3] [Anonymous], 2004, C122098 ASTM
  • [4] AYLWARD GH, SI CHEM DATA, P60
  • [5] Preparation and properties of hydroceramic waste forms made with simulated Hanford low-activity waste
    Bao, Y
    Grutzeck, MW
    Jantzen, CM
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (12) : 3287 - 3302
  • [6] Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers
    Barbosa, VFF
    MacKenzie, KJD
    Thaumaturgo, C
    [J]. INTERNATIONAL JOURNAL OF INORGANIC MATERIALS, 2000, 2 (04): : 309 - 317
  • [7] Transmission electron microscopy and nuclear magnetic resonance studies of geopolymers for radioactive waste immobilization
    Blackford, Mark G.
    Hanna, John V.
    Pike, Kevin J.
    Vance, Eric R.
    Perera, Dan S.
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (04) : 1193 - 1199
  • [8] GEOPOLYMERS - INORGANIC POLYMERIC NEW MATERIALS
    DAVIDOVITS, J
    [J]. JOURNAL OF THERMAL ANALYSIS, 1991, 37 (08): : 1633 - 1656
  • [9] Davidovits J., 1999, Geopolymer
  • [10] Immobilization of cesium in alkaline activated fly ash matrix
    Fernandez-Jimenez, A
    Macphee, DE
    Lachowski, EE
    Palomo, A
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2005, 346 (2-3) : 185 - 193
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