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矿渣和粉煤灰固化南沙软土试验研究

Journal of Water Resources and Architectural Engineering(2015)

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Abstract
以普通硅酸盐水泥为基础,分别以矿渣、粉煤灰换掺水泥对广州南沙软土进行固化处理,得出了固化土体的内摩擦角、黏聚力、无侧限抗压强度随各种固化剂掺入量及龄期的变化关系。通过电子显微镜观测(SEM )和X射线衍射技术(XRD )研究了不同固化土样的微观结构特征和土样的矿物组成。研究表明:在一定换掺量下,矿渣对水泥的换掺效果明显,其对于南沙软土的固化能力优于水泥,而且固化土后期强度增长速率较快;相反,粉煤灰对水泥的换掺效果却不佳,其固化软土的能力比矿渣弱得多。
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