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Strength of geopolymer cured in saline water in ambient conditions

机译：环境条件下在盐水中固化的地质聚合物的强度

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摘要

Results of geopolymer cement tests in saline water curing are reported. Saline water exposed curing is relevant to wellbore cements used for geo-sequestration of CO_2 in saline aquifer. The conventional Portland cement based oil well cements have unfavourable results when cured in saline water. However, geopolymer based cements cured in saline water showed higher strength results than the ones cured in normal water. The reason for this behaviour is not readily apparent, and hence microstructure investigations, namely, scanning electron microscopy, Energy-dispersive X-ray spectroscopy and X-ray diffraction were performed. Saline water cured geopolymer samples also were found to have lower sorptivity test results than normal water cured samples. Improved properties of geopolymers when cured in saline water is found to be related to reduced leaching of reactants from the samples rather than the result of ingress of saline water into the samples. Geopolymers tested are made from fly ash with small amount of slag (9%), and were cured at room temperature.
机译：报告了在盐水固化中的地质聚合物水泥测试结果。盐水暴露的固化与用于盐水隔离含水层中CO_2的固井的井筒水泥有关。当在盐水中固化时，常规的波特兰水泥基油井水泥具有不利的结果。但是，在盐水中固化的地聚合物基水泥比在普通水中固化的水泥显示出更高的强度结果。这种行为的原因尚不十分清楚，因此进行了微观结构研究，即扫描电子显微镜，能量色散X射线光谱和X射线衍射。还发现盐水腌制的地质聚合物样品的吸水性测试结果低于正常水腌制的样品。发现在盐水中固化时，地聚合物的性能改善与减少反应物从样品中的浸出有关，而不是与盐水进入样品中有关。测试的地聚合物是由粉煤灰制成的，含少量矿渣（9％），并在室温下固化。

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  • 来源
    《Fuel》 |2013年第5期|34-39|共6页
  • 作者

    Haider M. Giasuddin; Jay G. Sanjayan; P.G. Ranjith;

  • 作者单位

    Centre for Sustainable Infrastructure, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia;

    Centre for Sustainable Infrastructure, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia;

    Department of Civil Engineering, Monash University, Clayton, Victoria 3800, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    geopolymer; geo-sequestration; saline water; strength; ambient conditions;

    机译：地质聚合物地理隔离盐水强度;环境条件;

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