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从水分转化研究早强型材料固化淤泥的早强机理

甘雅雄, 朱 伟, 吕一彦, 杨 琴

甘雅雄, 朱 伟, 吕一彦, 杨 琴. 从水分转化研究早强型材料固化淤泥的早强机理[J]. 岩土工程学报, 2016, 38(4): 755-760. DOI: 10.11779/CJGE201604022
引用本文: 甘雅雄, 朱 伟, 吕一彦, 杨 琴. 从水分转化研究早强型材料固化淤泥的早强机理[J]. 岩土工程学报, 2016, 38(4): 755-760. DOI: 10.11779/CJGE201604022
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GAN Ya-xiong, ZHU Wei, LÜ Yi-yan, YANG Qin. Early-strength mechanism of cementitious additives from perspective of water conversion[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(4): 755-760. DOI: 10.11779/CJGE201604022
Citation: GAN Ya-xiong, ZHU Wei, LÜ Yi-yan, YANG Qin. Early-strength mechanism of cementitious additives from perspective of water conversion[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(4): 755-760. DOI: 10.11779/CJGE201604022
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从水分转化研究早强型材料固化淤泥的早强机理  English Version

  • 1.河海大学岩土工程研究所,江苏南京210098;
    2.河海大学环境学院,江苏南京210098

基金项目: “十二五”国家重大科技专项项目（2013ZX07113001）; 水体污染控制与治理科技重大专项项目（2012ZX07103-005）; 江苏省水利厅科技项目（2014）; 江苏省科技基础设施建设计划项目（BM2013013）
详细信息
    作者简介:

    甘雅雄(1990- ),男,硕士研究生,主要从事疏浚泥资源化处理方面的研究。E-mail: gyx1990love@126.com。

  • 中图分类号: TU447

Early-strength mechanism of cementitious additives from perspective of water conversion

  • 1. Geotechnical Research Institute of Hohai University, Nanjing 210098, China;
    2. College of Environment, Hohai University, Nanjing 210098, China

摘要

    摘要
  • 摘要: 针对淤泥固化工程为了减少堆场占地而需要早强性能的问题,研究在污水厂污泥固化/稳定化处理中使用的早强材料—硫铝酸盐水泥对清淤淤泥是否具有早强的性质,并从水分转化的角度探讨早强发生的机理。以太湖清淤淤泥为对象,使用硅酸盐水泥为对照,实测分析了固化淤泥的强度、变形、水分转化量。结果表明：硫铝酸盐水泥具有良好的早强性能,早强的机理在于更多地反应形成了结晶态的钙钒石。这种以矿物水形态被定量测定的生成物对早强发挥了关键的作用。
    Abstract: The problem that large area is occupied by dredged materials and the strength of solidified soil is developed slowly has become urgent in geotechnical engineering. The performance of solidified dredge treated by sulphoaluminate cement which is used in sludge solidification/stabilization (S/S) practice, and the early-strength mechanism based on water transfer are studied. For the dredged materials from Taihu Lake treated by the sulphoaluminate cement and the ordinary portland cement, the unconfined compressive strength (qu) and the failure strain of the solidified soil and the amount of water transfer are measured. The test results show that the sulphoaluminate cement has a good performance of early strength in solidification. The early-strength mechanism is the formation of more crystalline ettringite, that can be quantified by mineral water, which plays a key role in the hydrating reaction.
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    • 参考文献(13)
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出版历程
  • 修回日期:  2014-12-10
  • 发布日期:  2016-04-24

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